This Item is not able to be exported to New Zealand

Innovative accessories that are perfectly tailored to enhance the functionality of your equipment. Apart from being user-friendly, harmonious design also plays a key role. Swarovski's accessories offer you all kinds of useful add-ons, allowing you to tailor your binoculars to your personal needs.

Annals of the Deep Sky - Vol 1 A Survey of Galactic and Extragalactic Objects by Jeff Kanipe and Dennis Webb

“At last: the sky guide we’ve been waiting for! Annals of the Deep Sky melds through-the-eyepiece observing with up-to-date 21st century astrophysics. Its highly readable format should appeal to observers and non-observers alike. ..... operates at many levels. To the novice, it provides guidance and inspiration, offering both basic background and knowledge to grow with. It provides enrichment for established amateurs, pointing out new directions to pursue. And it offers an up-to-date, one-stop astrophysical reference for advanced observers who aspire to contribute to science.”

358Pages 158 illustrations, softbound.

Covers Andromeda, Antlia, Apus, and Aquarius plus Introductions to Basic Astronomy and Astrophysics.

ZWO 1.25″ IR 850nm Pass Filter suitable for IR sensitive cameras. You don’t need to debayer and get the full resolution of this sensor when use it with a Color camera such like ASI224MC or ASI185MC. Because the QE responce of sensor beyond 850nm is all the same. So you can use a color camera as mono camera with this filter, just don’t forget to keep the WB_R and WB_B to 50 (no White Balance applied).

The Tele Vue 2x Barlow provides double the magnification when used with any 1.25" eyepiece in your collection. For more magnification check out the Tele Vue 3x Barlow.

The chart below shows the effective magnification when spacing is introduced between the Barlow lens and image plane of your camera or eyepiece

Properly designed Barlows do wonderful things: They amplify power, slow the telescope's f/# (improving eyepiece sharpness), and give designers the opportunity to compensate for eyepiece aberrations.

Tele Vue Barlows use multi-coated high index glasses for optimum aberration correction, exceptional contrast with virtually no light loss. Observed performance is aberration free, even when tested with f/4 scopes. They even improve our competitor's eyepieces and telescopes!

Compromise image quality in any part of the optical chain and you've compromised every part! Tele Vue product design and execution deliver consummate satisfaction. Every Tele Vue Barlow must pass the same rigorous f/4, full field testing as all our eyepieces.

All Tele Vue Barlows now use brass clamp rings for secure, non marring holding of eyepieces and accessories.

Offered in 2x and 3x magnifications, these 1¼" Barlows perform identically. Simply choose either or both based on your eyepiece collection. Features include parfocal-ization, 1¼" filter threads, captive lock screws that won't fall out and full multicoatings.

The Tele Vue Powermate 2x is the perfect choice for both imaging and visual use especially if you want to use larger 2" eyepieces.

Unique Benefits and Applications for Tele Vue Powermate 2x

• Vignetting, edge field aberrations and pupil movement - all introduced when using Barlows with long focal length eyepieces, are minimized.
• Telecentric operation (field rays leave parallel to optical axis, unlike Barlow lenses which diverge rays). This is ideal for Hydrogen-alpha filter use such as with Daystar models.
• High performance for image amplification, CCD or film (some of the finest Earth-based planetary imaging is being done with Powermates ).
• Flexible for visual and imaging with all types of telescopes and eyepieces. Essentially Parfocal, and with nearly constant magnification regardless of image distance behind top surface (except 5x model which increases 1x for every 35mm of image distance increase).
• Higher magnifications are possible with high optical performance compared to "doubling up" Barlows.
• All will reach parfocal point in star diagonals, except for the 2", 2x which comes very close.

The Usual Tele Vue Quality

In addition to full multi-coating, Powermates include other Tele Vue special touches such as safety undercuts where practical on the chrome barrel and captive lock screws that can't fall out, and filter threads. Our 100% QC program at f/4 insures that Powermates will add dramatic power (and NOTHING ELSE) to your favorite eyepieces.

If, for example, you own a 24mm Panoptic, you'll have the power of a 12mm focal length eyepiece with the Tele Vue Powermate 2x, 9.6mm with the 2.5x Powermate, a 6mm with the 4x Powermate, or a 4.8mm with the 5x Powermate!

Some of the finest Solar System images have been made with Powermates. Used singly or stacked, Powermates help any scope achieve the long focal-length required to image details on Solar System bodies. The increased image scale allows for imaging without an intervening eyepiece -- like in prime focus photography. Powermate T-Ring Adapters fit on the Powermate lens assemblies to allow attachment of your camera's T-Ring or other T-threaded imaging accessory.

For astro-imagers, the above chart indicates the magnification for each Powermate (2x, 2.5x, 4x & 5x) as a function of distance from the Powermate top surface to the imaging surface (CCD or film).

1¼" Powermates: 2.5x & 5x

These models stand less than 3" out of your focuser and the 5x takes 1¼" threaded filters. They are parfocal in ALL 1¼" diagonals and prisms. For this reason, they are highly recommended over standard Barlows for 1¼" diagonals and refractors such as the Tele Vue-60.

The 5x Powermate is ideal for long focus CCD and film photography, magnifying about 7.7x. It's an attractive, high performance alternative to eyepiece projection. The 5x is also perfect for slowing down your scope for Hydrogen-Alpha solar observing.

2" Powermates: 2x & 4x

These Powermates are a better choice for 2" diagonals than Barlows, since they are nearly Parfocal. They are threaded for 48mm filters and their performance is excellent with every 1¼" and 2" eyepiece we make (yes, even the 31mm Nagler Type 5!). Both the 2" eyepiece holder and the special 2" flat top adapter use our brass clamp rings for secure operation. And, it also has a very unique feature: you can unscrew the 2" eyepiece housing and screw on a special T-ring adapter for solid, compact attachment of CCD or camera equipment.

Excellent with long eye-relief, 2" eyepieces. Using the 4x model, imagine the quality of a 35mm Panoptic at 8.8mm with 25mm of eye relief! The Powermate is NOT a Barlow so the Panoptic-Barlow Interface is not needed! The Tele Vue Powermate 2x fits all the way into 2" Star Diagonals, requiring minimal refocus compared to a 2" Barlow.

Note for Dobsonian/Newtonian Owners

When using Tele Vue's Paracorr coma corrector, the 2.5x or 5x Powermate should be inserted into the Paracorr's 1¼" adapter (i.e., between the Paracorr and the eyepiece). For 2x and 4x 2" Powermates, first insert the Powermate into the focuser, then the Paracorr into the Powermates.

Al Nagler's 4-element concept, continues the tradition of full-field sharpness with optimum aberration control. Like long eye-relief? Retain the eye-relief of long focal length eyepieces, while at high power. Enjoy, for example, the sharpness and comfort of the 32mm Plössl at up to 5 times the power!

Powermate vs. Barlow

To understand the Powermate, we must first understand the Barlow lens. Barlows amplify the power of a telescope. They are essentially "focal reducers" for eyepieces, or "focal extenders" for objectives. Terence Dickenson, in his Barlow test report in Sky and Telescope, July 1997, says: "Technology has erased the old objections. A modern Barlow will not degrade your telescope's optics. Anyone telling you otherwise is using outdated information. Moreover, the highly regarded Nagler eyepieces and their clones have built-in Barlows, ample evidence that the lens is not some detrimental intruder." Thanks, Terence, for laying the myth of the degrading Barlow to rest.

A high quality Barlow, properly designed and manufactured avoids compromising a telescope's colour and spherical aberration corrections. The "invisibility" of Tele Vue's 2-element Barlows is well recognized in test reports in the astronomy magazines. However, by the nature of its negative power lens, a Barlow will do more than just increase magnification, regardless of the number of elements.

The diverging rays leaving the Barlow result in moving the exit pupil further out, thereby extending the eye relief. In short to medium focal length eyepieces the change is not noticeable. However, in the case of long focal length eyepieces, the increase can be significant and not without performance consequences.

Less Vignetting with Tele Vue Powermate 2x

Vignetting can occur due to the altered ray path, when the eyepiece's lenses are not large enough in diameter to allow all the rays to make it through. Shorter Barlows, or ones with too much magnification, only exacerbate the problem because the ray path entering the eyepiece is steeper.

We had to go beyond the Barlow concept to achieve the goal of a compact, high power, fully corrected image amplifier. The Powermate consists of a negative doublet plus a positive "pupil-correcting" doublet. This 4-element system provides the magnifying function of a Barlow without its limitations by restoring the field rays back to their original direction, as if the Powermate were not there. The result is a pure magnification increase.

Tele Vue Powermate 4x - what's all this talk about Powermates?

Unique Benefits and Applications for Powermates

• Vignetting, edge field aberrations and pupil movement - all introduced when using Barlows with long focal length eyepieces, are minimized.
• Telecentric operation (field rays leave parallel to optical axis, unlike Barlow lenses which diverge rays). This is ideal for Hydrogen-alpha filter use such as with Daystar models.
• High performance for image amplification, CCD or film (some of the finest Earth-based planetary imaging is being done with Powermates ).
• Flexible for visual and imaging with all types of telescopes and eyepieces. Essentially Parfocal, and with nearly constant magnification regardless of image distance behind top surface (except 5x model which increases 1x for every 35mm of image distance increase).
• Higher magnifications are possible with high optical performance compared to "doubling up" Barlows.
• All will reach parfocal point in star diagonals, except for the 2", 2x which comes very close.

In addition to full multi-coating, Powermates include other Tele Vue special touches such as safety undercuts where practical on the chrome barrel and captive lock screws that can't fall out, and filter threads. Tele Vue's 100% QC program at f/4 insures that the Powermate 4x will add dramatic power (and NOTHING ELSE) to your favorite eyepieces.

If, for example, you own a 24mm Panoptic, you'll have the power of a 12mm focal length eyepiece with the 2.0x Powermate, 9.6mm with the 2.5x Powermate, a 6mm with the Powermate 4x, or a 4.8mm with the 5x Powermate!

Imaging the Solar System with Powermate 4x

Some of the finest Solar System images have been made with Powermates. Used singly or stacked, Powermates help any scope achieve the long focal-length required to image details on Solar System bodies. The increased image scale allows for imaging without an intervening eyepiece -- like in prime focus photography. Powermate T-Ring Adapters fit on the Powermate lens assemblies to allow attachment of your camera's T-Ring or other T-threaded imaging accessory.

For astro-imagers, the above chart indicates the magnification for each Powermate (2x, 2.5x, 4x & 5x) as a function of distance from the Powermate top surface to the imaging surface (CCD or film).

Powermate 4x with 2" barrel diameter

The Powermate 4x is a better choice for 2" diagonals than Barlows, since it is nearly Parfocal. Threaded for 48mm filters and its performance is excellent with every 1¼" and 2" eyepiece Tele Vue makes (yes, even the 31mm Nagler Type 5!). Both the 2" eyepiece holder and the special 2" flat top adapter use brass clamp rings for secure operation. And, it also has a very unique feature: you can unscrew the 2" eyepiece housing and screw on a special T-ring adapter for solid, compact attachment of CCD or camera equipment.

Excellent with long eye-relief, 2" eyepieces. Using the 4x model, imagine the quality of a 35mm Panoptic at 8.8mm with 25mm of eye relief! The Powermate is NOT a Barlow so the Panoptic-Barlow Interface is not needed! The 2" Powermate fits all the way into 2" Star Diagonals, requiring minimal refocus compared to a 2" Barlow.

Note for Dobsonian/Newtonian Owners

When using Tele Vue's Paracorr coma corrector andPowermate 4x, first insert the Powermate into the focuser, then the Paracorr into the Powermate.

Al Nagler's 4-element concept, continues the tradition of full-field sharpness with optimum aberration control. Like long eye-relief? Retain the eye-relief of long focal length eyepieces, while at high power. Enjoy, for example, the sharpness and comfort of the 32mm Plössl at up to 5 times the power!

Powermate 4x vs. Barlow

To understand the Powermate, we must first understand the Barlow lens. Barlows amplify the power of a telescope. They can be considered "focal reducers" for eyepieces, or "focal extenders" for objectives. Terence Dickenson, in his Barlow test report in Sky and Telescope, July 1997, says: "Technology has erased the old objections. A modern Barlow will not degrade your telescope's optics. Anyone telling you otherwise is using outdated information. Moreover, the highly regarded Nagler eyepieces and their clones have built-in Barlows, ample evidence that the lens is not some detrimental intruder." Thanks, Terence, for laying the myth of the degrading Barlow to rest.

A high quality Barlow must be properly designed and manufactured in order to avoid compromising a telescope's colour and spherical aberration corrections. The "invisibility" of Tele Vue's 2-element Barlows has been noted in test reports in the astronomy magazines. However, by the nature of its negative power lens, a Barlow will do more than just increase magnification, regardless of the number of elements.

The diverging rays leaving the Barlow result in moving the exit pupil further out, thereby extending the eye relief. In short to medium focal length eyepieces the change is not noticeable. However, in the case of long focal length eyepieces, the increase can be significant and not without performance consequences.

No Vignetting

Vignetting can occur due to the altered ray path, when the eyepiece's lenses are not large enough in diameter to allow all the rays to make it through. Shorter Barlows, or ones with too much magnification, only exacerbate the problem because the ray path entering the eyepiece is steeper.

We had to go beyond the Barlow concept to achieve the goal of a compact, high power, fully corrected image amplifier. The Powermate consists of a negative doublet plus a positive "pupil-correcting" doublet. This 4-element system provides the magnifying function of a Barlow without its limitations by restoring the field rays back to their original direction, as if the Powermate were not there. The result is a pure magnification increase.

Tele Vue Powermate 5x

Unique Benefits and Applications for Powermates™

• Vignetting, edge field aberrations and pupil movement - all introduced when using Barlows with long focal length eyepieces, are minimized.
  
• Telecentric operation (field rays leave parallel to optical axis, unlike Barlow lenses which diverge rays). This is ideal for Hydrogen-alpha filter use such as with Daystar models.
  
• High performance for image amplification, CCD or film (some of the finest Earth-based planetary imaging is being done with Powermates™ ).
  
• Flexible for visual and imaging with all types of telescopes and eyepieces. Essentially Parfocal, and with nearly constant magnification regardless of image distance behind top surface (except 5x model which increases 1x for every 35mm of image distance increase).
  
• Higher magnifications are possible with high optical performance compared to "doubling up" Barlows.
  
• All will reach parfocal point in star diagonals, except for the 2", 2x which comes very close.
  

In addition to full multi-coating, Powermates™ include other Tele Vue special touches such as safety undercuts where practical on the chrome barrel and captive lock screws that can't fall out, and filter threads. Our 100% QC program at f/4 insures that Powermates™ will add dramatic power (and NOTHING ELSE) to your favorite eyepieces.

If, for example, you own a 24mm Panoptic, you'll have the power of a 12mm focal length eyepiece with the 2.0x Powermate™, 9.6mm with the 2.5x Powermate™, a 6mm with the 4x Powermate™, or a 4.8mm with the 5x Powermate™!

Some of the finest Solar System images have been made with Powermates™. Used singly or stacked, Powermates™ help any scope achieve the long focal-length required to image details on Solar System bodies. The increased image scale allows for imaging without an intervening eyepiece -- like in prime focus photography. Powermate T-Ring Adapters fit on the Powermate lens assemblies to allow attachment of your camera's T-Ring or other T-threaded imaging accessory.

For astro-imagers, the above chart indicates the magnification for each Powermate™ (2x, 2.5x, 4x & 5x) as a function of distance from the Powermate™ top surface to the imaging surface (CCD or film).

These models stand less than 3" out of your focuser and the 5x takes 1¼" threaded filters. They are parfocal in ALL 1¼" diagonals and prisms. For this reason, they are highly recommended over standard Barlows for 1¼" diagonals and refractors such as the Tele Vue-60.

The 5x Powermate™ is ideal for long focus CCD and film photography, magnifying about 7.7x. It's an attractive, high performance alternative to eyepiece projection. The 5x is also perfect for slowing down your scope for Hydrogen-Alpha solar observing.

These Powermates™ are a better choice for 2" diagonals than Barlows, since they are nearly Parfocal. They are threaded for 48mm filters and their performance is excellent with every 1¼" and 2" eyepiece we make (yes, even the 31mm Nagler Type 5!). Both the 2" eyepiece holder and the special 2" flat top adapter use our brass clamp rings for secure operation. And, it also has a very unique feature: you can unscrew the 2" eyepiece housing and screw on a special T-ring adapter for solid, compact attachment of CCD or camera equipment.

Excellent with long eye-relief, 2" eyepieces. Using the 4x model, imagine the quality of a 35mm Panoptic at 8.8mm with 25mm of eye relief! The Powermate™ is NOT a Barlow so the Panoptic-Barlow Interface is not needed! The 2" Powermate™ fits all the way into 2" Star Diagonals, requiring minimal refocus compared to a 2" Barlow.

When using Tele Vue's Paracorr coma corrector, the 2.5x or 5x Powermate™ should be inserted into the Paracorr's 1¼" adapter (i.e., between the Paracorr and the eyepiece). For 2x and 4x 2" Powermates™, first insert the Powermate™ into the focuser, then the Paracorr into the Powermates™.

TeleVue Barlows use multi-coated high index glasses for optimum aberration correction, exceptional contrast with virtually no light loss.Observed performance is aberration free, even when tested with f/4 scopes.

They even improve non TeleVue eyepieces and telescope performance.

Compromise image quality in any part of the optical chain and you've compromised every part!

TeleVue product design and execution deliver consumate satisfaction.

Every TeleVue Barlow must pass the same rigorous f/4, full field testing as all TeleVue eyepieces.

Offered in a 2x magnification, the Big Barlow is ideal for Newtonian scope owners.

It will be parfocal with both 2" and 1 1/4" eyepieces in this application.

Features include threads for 48mm filters, captive lock screw and full milti-coatings.

Note: The Tele Vue 2x BIG Barlow is not recommended for use with 2" diagonals because it's length prevents it from being parfocal. With some telescopes, focus might not be reached, particularly when the Panoptic interface lens is also used with it. A far better approach with no potential problems in any scope or with any eyepieces is to use the 2" 2x Powermate (PMT-2200), which essentially includes the Pan-Barlow Interface

Specifications

The Atik 460EX fully supports 1.25" filters down to f/2, so you won't need to replace any of your current investment in wheel or filters. This is an added advantage when looking to invest in a CCD camera that may go through multiple telescopes.

The Atik-4 Series cameras are a development of the renowned 3-Series cameras, featuring better cooling and narrower body. They benefit from setpoint cooling to make taking matching dark frames a snap, and simple 12V power requirement to facilitate field operation. The impressive sensitivity, great cooling and narrow profile, make the Atik Series 4 outstanding CCD cameras to use on modern telescopes, including Hyperstar/Fastar systems.

The Atik 383L+ is an 8-megapixel camera using the Truesense KAF-8300 CCD. Much has been written about this CCD to justify its place in astronomers' hearts. It can be succinctly summed up by saying that it's a fabulous CCD, with a huge number of good-sized pixels, and is currently available at an irresistible price.

This sensor has redefined mid-range astro-imaging, making multi-megapixel cooled cameras much more accessible.

Atik prides itself on providing cameras offering the very highest image quality at a reasonable cost. They have built on the success of the highly-regarded Atik 314 platform to support Kodak's KAF-8300. This immediately offers a huge number of advantages, including the very low read-noise circuits and the reliability of using this established design.

Specifications for the Atik 383L+ Mono

Mechanical Drawing

Quality hardware

The key to any high-quality camera is the ability to convert light collected by the sensor into digital information while ensuring that as little noise as possible is added. The digital image needs to truly reflect the light collected. The Atik 383L+ achieves this, by having:

• Very low read-noise, 7 electrons, on par with many Sony sensors, enabling faint details to be detected.
• Great linearity, with a regression correlation coefficient of R = 0.9998 over the range of 1,000 to 64,000, making the camera suitable for sensitive photometric measurements.
• The bias frame histogram from the camera shows the ideal Gaussian shape, indicating that maximum detail can be extracted on processing.

The Atik 383L+ is a dream combination of low-noise electronics and a scientific-grade sensor that we are able to offer at a fantastic price. Whether you are an established imager or are just starting, the Atik 383L+ is a great choice.

Instruction Manual

The Atik 460EX offers the latest and greatest of Sony's CCDs, the ICX694. Featuring the latest generation EXview technology, this camera has outstanding Quantum Efficiency, very low noise, and excellent thermal management.

This model is an ideal match for telescopes commonly used by amateurs, up to bigger SCTs or RCs. Its excellent sensitivity makes it one of the best cameras for deep-sky astrophotography, offering a logical upgrade path for smaller CCD camera owners looking for uncompromising performance.

With more than twice the imaging area than the venerable ICX285, it will satisfy the need for larger sky coverage while maintaining excellent low-noise characteristics.

The Atik 460EX fully supports 1.25" filters down to f/2, so you won't need to replace any of your current investments in wheels or filters. This is an added advantage when looking to invest in a CCD camera that may go through multiple telescopes.

The Atik-4 Series cameras are a development of the renowned 3-Series cameras, featuring better cooling and a narrower body. They benefit from setpoint cooling to make taking matching dark frames a snap, and simple 12V power requirement to facilitate field operation. The impressive sensitivity, great cooling, and narrow profile make the Atik Series 4 outstanding CCD cameras to use on modern telescopes, including Hyperstar/Fastar systems.

Specifications

Instruction Manual

The Atik 490EX is the highest resolution Atik to date and one of the most flexible ones. Featuring the latest generation Sony™ EXview HAD CCD II™ technology in an area over twice as large as before, this camera has outstanding Quantum Efficiency, very low noise, and excellent thermal management.

This model is an ideal match not only for Hyperstar systems but also for most small to midsize telescopes used by astrophotographers.

The Atik 490EX fully supports 1.25" filters down to f/2, so you won't need to replace any of your current investments in wheels or filters. This is an added advantage when looking to invest in a CCD camera that may go through multiple telescopes.

The Atik-4 Series cameras are a development of the renowned 3-Series cameras, featuring better cooling and a narrower body. They benefit from setpoint cooling to make taking matching dark frames a snap, and simple 12V power requirement to facilitate field operation. The impressive sensitivity, great cooling, and narrow profile make the Atik Series 4 outstanding CCD cameras to use on modern telescopes, including Hyperstar/Fastar systems.

Specifications

Instruction Manual

Atik One 6.0 + Atik GP + OAG Kit (Atik One Integrated Kit)

Atik One Integrated Kit

Looking for great value? For a limited time, you get three in one, the Atik One with the Atik GP, plus an M42 off-axis guider for an unbelievable price. Perfect for intermediate to experienced astrophotographer’s looking for a cooled CCD camera that takes stunningly detailed deep sky images.

The off-axis guider is a smaller version of our OAG, with the renowned smooth focusing system and moveable prism. Please note: The Kit is designed to be used as a single unit with the Atik One 6.0 or the Atik One 9.0. Its parts aren’t for independent use.

Atik One 6.0

The Atik One 6.0 features the same incredible 6 megapixel Sony ICX694 EXview sensor as our highly renowned Atik 460EX camera for outstanding sensitivity at a fantastic resolution purposely engineered for deep sky imaging. Housed in an advanced body with internal filter wheel, the One 6.0 provides an all-in-one solution for mono imaging.

Features of the One

Integrated and powerful, the Atik One series embodies Atik’s principles to bring you a high performance, simple to use platform, with internal filter wheel, all in a very compact and light package. It features an improved cooler, capable of reaching a stable -38C below ambient, and a CCD chamber design, filled with high purity Argon for a dry, condensation free environment and optimal thermal insulation.

The Atik One also features an internal USB hub and accessory power port, so that you can keep the cable clutter under control. In addition, two 1/4” tripod mounting holes are available to give you more options for mounting the camera and other accessories.

The 5 position integrated 1.25″ filter wheel features a mechanical roller for filter location ensuring the highest levels of reproducibility image after image. The filter wheel is natively controlled from our software or has an ASCOM driver for third party programs. Also included is a tool that allows filters to be loaded without opening the camera.

What's in the box?

• Atik One camera body
• Atik GP camera body
• M42 Off-axis guider body
• 2" adapter
• 0.5m mini-USB cable
• 3m USB cable
• 1.8m battery power connector
• CD-ROM with drivers, software and user's manual (PDF)
• Quickstart guide (paper)

Our highly acclaimed Artemis Capture software is included for camera control and data acquisition, along with a full ASCOM driver. These are also available from our Downloads page.

A universal (110-230V) power adapter is optional.

Specifications

The Atik 490EX fully supports 1.25" filters down to f/2, so you won't need to replace any of your current investment in wheel or filters. This is an added advantage when looking to invest in a CCD camera that may go through multiple telescopes.

The Atik-4 Series cameras are a development of the renowned 3-Series cameras, featuring better cooling and narrower body. They benefit from setpoint cooling to make taking matching dark frames a snap, and simple 12V power requirement to facilitate field operation. The impressive sensitivity, great cooling and narrow profile, make the Atik Series 4 outstanding CCD cameras to use on modern telescopes, including Hyperstar/Fastar systems.

Specifications for the Atik 414EX Mono

Sony EXview HAD CCD II ICX825 sensor - Super Sensitive

The fact that you're reading this this shows you've made it past the most common trap in choosing a camera for astroimaging - how many megapixels is it?

There are 2 variables in your camera that are far more important to consider when imaging faint deep sky objects. Sensitivity and noise.

The sensitivity tells us how many precious photons will be converted to signal...this is were the new Sony ICX825 shines! But how much more sensitive is it? Compared with Atik's previous 314L+ at 650nm, the 414EX is 60% more sensitive. In fact, the 414EX is even more sensitive than the already spectacular 460EX, making it the perfect camera for the enthusiast with a limited budget. The graph below shows the striking difference between the ICX285 and ICX825:

Low noise and effective cooling

Atik's 414EX has more than just great sensitivity.

Another feature of the 414EXmaking it a winner for astrophotography is it's exceptionally low noise. When capturing a stunning portrait of your favourite deep sky target you will understand how delicately faint it is. This means the data you wish to capture is sparse.

If the electronics of the camera add noise (unwanted signal) to your image the end result will be lacking in detail and contrast. To ensure the contribution from noise is minimised Atik's 414EX has thermoelectric cooling that can easily lower the CCD chip to 30ºC below ambient, and is regulated, so that your image calibration is consistent. This results in a noise level so low that for most applications dark frames are an option rather than a requirement. The upshot is that you can spend more time imaging!

An image of M106 taken with Atik 414EX (courtesy of atik-cameras.com)

Specifications for the Atik 414EX Colour

Sony EXview HAD CCD II ICX825 sensor - Super Sensitive

The fact that you're reading this this shows you've made it past the most common trap in choosing a camera for astroimaging - how many megapixels is it?

There are 2 variables in your camera that are far more important to consider when imaging faint deep sky objects. Sensitivity and noise.

The sensitivity tells us how many precious photons will be converted to signal...this is were the Sony ICX825 shines! But how much more sensitive is it? Compared with Atik's previous 314L+ at 650nm, the 414EX is 60% more sensitive. In fact, the 414EX is even more sensitive than the already spectacular 460EX, making it the perfect camera for the enthusiast with a limited budget. The graph below shows the striking difference between the ICX285 and ICX825:

Low noise and effective cooling

Atik's 414EX has more than just great sensitivity.

Another feature of the 414EXmaking it a winner for astrophotography is it's exceptionally low noise. When capturing a stunning portrait of your favourite deep sky target you will understand how delicately faint it is. This means the data you wish to capture is sparse.

If the electronics of the camera add noise (unwanted signal) to your image the end result will be lacking in detail and contrast. To ensure the contribution from noise is minimised Atik's 414EX has thermoelectric cooling that can easily lower the CCD chip to 30ºC below ambient, and is regulated, so that your image calibration is consistent. This results in a noise level so low that for most applications dark frames are an option rather than a requirement. The upshot is that you can spend more time imaging!

The 12 megapixel sensor of the Atik 4120EX is the ideal solution for capturing stunning high resolution images. Exclusively available as one-shot colour (OSC), this is an ideal match for Hyperstar systems and short focal length telescopes. The small 3,1 µm pixels are able to faithfully record the colour of stars and nebulae, even in the fastest imaging systems. The high resolution means you can print your images to A3 and beyond, while the famed sensitivity of the Sony EXview sensor ensures those images are brimming with detail.

Features of the 4-Series

Our 4-Series is designed in such way as to combine power and control with flexibility and ease of use. The narrow body makes them ideal for use on Hyperstar and Fastar systems whilst maintaining suitability with a huge range of other telescopes. They feature fully regulated set-point cooling which makes for easy and consistent image calibration, though they feature such low noise that dark frames are no longer even a requirement, meaning you can spend more time imaging the things that matter.

The slim, ergonomic design of these cameras naturally comes in at a low weight to help minimize stress on the corrector plate. The desiccant port is readily accessible from outside the camera for easy maintenance , and a simple 12V power requirement is complimented by low power use to help you get the most out of your imaging sessions, whether in the observatory or out in the field.

EXview

All of our 4-EX series cameras use sensors embedded with Sony EXview HAD CCD II™ technology which results in outstanding Quantum Efficiency, incredibly low read noise and excellent thermal management. These high Quantum Efficiencies make for impressive sensitivity across a vast range of wavelengths, but become particularly outstanding when imaging in narrowband, capturing stunning levels of detail in even the faintest of objects.

• Sensor Type: CCD - Sony ICX814
• Horizontal Resolution: 3380 pixels
• Vertical Resolution: 2704 pixels
• Pixel Size: 3.69 µM x 3.69 µM
• ADC: 16 bit
• Readout Noise: 5e- typical value
• Interface: USB 2.0 High Speed, with embedded hub
• Power: 12v DC 2A
• Maximum Exposure Length: Unlimited
• Minimum Exposure Length: 1/1000 s
• Cooling: Termoelectric set point with max ΔT=-38°C
• Weight: approx. 900 gr
• Backfocus: ~27mm
• Exclusively as mono

Convenience of use has been key during the design. The Atik One also features an internal USB hub and accessory power port, so that you can keep the cable clutter under control. Only 2 cables for your imaging gear! In addition to this, two 1/4” tripod mounting holes are available, to give you more options for mounting the camera, other accessories, or for managing the cables.

The 5 position integrated 1.25″ filter wheel features a mechanical roller for filter location ensuring the highest levels of reproducibility image after image. The filter wheel is natively controlled from our software or has an Ascom driver for 3rd party programs. To make filter changing less of a chore the camera comes with a tool to allow filters to be loaded without opening the camera.

Atiks own capture software (Artemis) is included for camera control and data acquisition, and plug-ins are included to allow use with Astroart and Maxim DL.

Dawn image processing software is also included.

System Requirements:

• Pentium IV PC with 512MB RAM
• Windows XP/Vista/Win7/Win8/Win8 (not RT)
• CD-ROM drive
• USB 2.0 port

A universal (110-230V) power adapter is optional.

The faster the focal ratio of your telescope, the greater your visual reward for using Tele Vue eyepieces. Tele Vue Plössls feature full multicoatings for greatest light transmission and contrast.

Blackened lens edges and internal anti-reflection threads tweak the last bit of contrast for maximum image detail. The sharper field focuses faint star light into perceptible points and allows those with undriven mounts to gaze longer before repositioning the image.

The 25mm, 20mm, 15mm, 11mm and 8mm Plössls round out the focal lengths for various observing from deep sky to planetary. They work best with Tele Vue Barlows or Powermates to effectively double the number of focal lengths in your collection.

Far superior to eyepieces usually provided as standard with most instruments.

Review

This is a very good medium high to high power eyepiece for observing lunar and planetary detail, resolving globular clusters, small planetary nebulae .

It has only 6mm of eye relief that will limit the field for eyeglass wearers.

This 8mm TeleVue Plössl was rated the best 8mm Plossl in a recent test report of 31 eyepieces in Sky & Telescope magazine.

Like all TeleVue Plossls it has filter threads to fit your filters and blackened lens edges as well as being parfocal.

Tele Vue 8mm Plossl Specifications

Tele Vue's Delos 12mm is a medium focal length eyepiece that creates an "immersive viewing experience". With its generous 20mm eye-relief and wide 72° apparent field of view you will be hard pressed to find another eyepiece that is such a pleasure to look through. Amazing wide fields of view in well corrected refractors with short to medium focal lengths (over 1° FOV up to 800mm focal length). While some of the shorter focal length Delos eyepieces may provide too much power in long focal length Cassegrains, the Delos 12mm is suitable for any focal length telescope.

There is a good chance the TeleVue Delos will be seen as the ultimate combination of performance, viewing comfort and price. If you've been keeping a spot in your case for an affordable, premium eyepiece, you should consider a Delos - you won't be disappointed! Lessons learned from the tremendously successful Ethos series were applied to develop this long eye-relief, 72° apparent field of view eyepiece line.

The Delos 12mm has a 1.25" barrel making it suitable for almost any telescope or even bino-viewers!

Tele Vue Delos 12mm - Specifications

• Model # EDL-12.0
• Focal Length 12mm
• Barrel Size 1.25"
• Apparent Field of View 72°
• Eye Relief 20mm
• Weight 408g
• Field Stop 15.0mm

Background:

In 2011 Tele Vue introduced the Delos, mid-to-short focal length line of 20mm eye-relief, 72° apparent field of view eyepieces. Every optical, mechanical, and ergonomic aspect was rethought to achieve reference-standard performance for any visual application.

The Delos was conceived as a narrower field Ethos. Reducing the field to 72° allowed freedom to increase eye-relief, while controlling pupil aberrations, all without making the eyepiece too large. With Ethos performance standards as benchmarks, the Delos design achieves full field sharpness, virtually perfect f θ (theta) distortion mapping, and color neutrality. Image fidelity is maximized utilizing glass matched multicoatings and anti-reflection surfaces throughout the eyepiece.

Contrast is further enhanced with a new, continuously adjustable height eyeguard system that can be locked in any position. Since the Delos eye-lens measures a quite large 35mm in diameter, preventing stray light from reflecting off the first surface and extraneous light from entering your eye pays off in a nice increase in perceived contrast. The eyeguard's sliding action allows for positioning the soft rubber eyeguard at the ideal height to suit the observer's preference. Indicator marks on the eyepiece body are handy reference guides for setting your perfect position. The eye-guard can also rotate for Dioptrx users.

Awards - Delos 6mm and 10mm

Reviews

Sky & Telescope Hot New Product for 2012 Award

Review of the 6mm & 10mm Delos from Astronomy Magazine, December 2011

Excerpts from Sky & Telescope, June 2011, review of Delos eyepieces:

WHAT WE LIKE:

Essentially perfect optics
"Immersive" observation experience

WHAT WE DON'T LIKE:

I spent several nights viewing the Moon, Saturn, stars and nebulae with a variety of telescopes … .

The Delos eyepieces are "easy to look through … . They have flat fields, delivering absolute pinpoint stars from edge to edge with no hint of color aberration. The view, especially during the daytime, is very pure with no noticeable color tint. And there wasn't a hint of ghosts or reflections, even with the brightest stars".

"What caught me a bit off guard, however, was something that's best described as the observing experience. It was distinctly pleasurable."

"I have the sensation of looking out of a circular window rather than into an eyepiece."

— di Cicco, Dennis. "Tele Vue's New Delos Eyepieces". Sky & Telescope (June 2011). p. 58, 59.

Tele Vue's Delos 17.3mm is the longest focal length in the Delos series. Still with a generous 20mm eye-relief and wide 72° apparent field of view you will enjoy an emmersive viewing experience that is hard to match. The optimized combination of field size and eye-relief makes Delos an eyeglass wearers dream!

There is a good chance the TeleVue Delos will be seen as the ultimate combination of performance, viewing comfort and price. If you've been keeping a spot in your case for an affordable, premium eyepiece, you should consider a Delos 17.3mm - it won't disappoint! Lessons learned from the tremendously successful Ethos series were applied to develop this long eye-relief, 72° apparent field of view eyepiece line.

The Delos 17.3mm has a standard 1.25" barrel making it suitable for almost any telescope. An excellent choice for low power viewing in bino-viewers!

Tele Vue Delos 17.3mm - Specifications

• Model # EDL-17.3
• Focal Length 17.3mm
• Barrel Size 1.25"
• Apparent Field of View 72°
• Eye Relief 20mm
• Weight 408g
• Field Stop 21.2mm

Background

Tele Vue introduced the Delos In 2011. The series includes mid-to-short focal lengths with all providing 20mm eye-relief and 72° apparent field of view. Tele Vue designer Paul Dellechiaie rethought every optical, mechanical, and ergonomic aspect to achieve reference-standard performance for any visual application.

The Delos was conceived as a narrower field Ethos. Eye-relief was increased while still controlling pupil aberrations by reducing the field to 72°. This was achieved without making the eyepiece too large. With Ethos performance standards as benchmarks, the Delos design achieves full field sharpness, virtually perfect f θ (theta) distortion mapping, and colour neutrality. Image fidelity is maximized utilizing glass matched multicoatings and anti-reflection surfaces throughout the eyepiece.

Contrast is further enhanced with a new, continuously adjustable height eyeguard system that can be locked in any position. Since the Delos eye-lens measures a quite large 35mm in diameter, preventing stray light from reflecting off the first surface and extraneous light from entering your eye pays off in a nice increase in perceived contrast. The eyeguard's sliding action allows for positioning the soft rubber eyeguard at the ideal height to suit the observer's preference. Indicator marks on the eyepiece body are handy reference guides for setting your perfect position. The eye-guard can also rotate for Dioptrx users.

Awards

Delos 6- & 10-mm

Delos Eyepieces Reviews

Quotes from review of 10mm, 4.5mm, & 14mm Delos on Alpha Lyrae website.

• The stunningly flat field and lack of optical aberrations really allow clusters to shine and galaxies and nebulae are resplendent.
• It is rare I use any other eyepiece for deep sky observing anymore.

• Quite simply, the planetary performance matches the very best dedicated planetary eyepieces I have ever used such as the TMB Super Monocentric.
• There is also an indescribable quality which makes them a very easy and relaxing eyepiece to use.

— Hodgson, Matthew. "Televue Delos Eyepiece Review". Alpha Lyrae (05 May 2014). Full Review.

Excerpt from Delos 17.3mm review in Astronomy Now magazine.

Examining the stars of the Pleiades served up by the 17.3mm Delos, I was immediately struck by the pinpoint star images right to the edge of the field-of-view. Contrast was superb. Nor could I detect any signs of off-axis distortions.

— Neil English. "Tele Vue Delos". Astronomy Now (April 2013). Read Full Review (Delos 6-,10- & 17.3-mm) now.

Sky & Telescope Hot New Product for 2012 Award

More Than Expected (Delos 6- and 10-mm)

And while the 20 mm of eye relief make them attractive for those who observe wearing eyeglasses, it was the "distinctly pleasurable" observing experience that most impressed our reviewer. When it comes to eyepiece design, The Delos seems to have hit all the sweet spots.

— Editors. "Hot New Products for 2012". Sky & Telescope (January 2012). p.39.

Excerpt from ATT review of Delos 6- & 10-mm eyepieces:

Wide-Field Eyepieces That Pack a Planetary Punch

With the Delos, the eyepiece simply "disappears" and allows the observer to observe. I could find nothing whatsoever to complain about; the "twist and tighten" eye relief adjustment feature is the best I've ever seen in any eyepiece, and the optics are essentially perfect. Tele Vue somehow always finds a way to continuously improve upon their eyepieces and the Delos is certainly no exception. Bottomline: If you're in the market for a planetary eyepiece, you owe it to yourself to consider the Tele Vue Delos.

— Erik Wilcox. "Tele Vue Delos". Astronomy Technology Today (Nov-Dec 2011). Full Review.

Review of the 6mm & 10mm Delos Eyepieces from Astronomy Magazine, December 2011

• Contrast was excellent - right up there with some of the best planetary eyepieces I've ever used.
• I searched but saw no internal reflections or scattering in either eyepiece.
• The flat field the Delos eyepieces produce really made star fields pop. Open clusters epitomized the old standard "diamonds on velvet". Stars on and off axis showed no sign of astigmatism.
• Tele Vue has constructed an eyepiece that stands with the best deep-sky and planetary eyepieces on the market.

— Trusock, Tom. "Astronomy tests Tele Vue's new eyepiece line". Astronomy Magazine (December 2011). Full Review.

Excerpts from Sky & Telescope, June 2011, review of Delos eyepieces:

WHAT WE LIKE:

Essentially perfect optics
"Immersive" observation experience

WHAT WE DON'T LIKE:

Trying to nail down why the observing experience is so pleasurable.

I spent several nights viewing the Moon, Saturn, stars and nebulae with a variety of telescopes … .

The Delos eyepieces are "easy to look through … . They have flat fields, delivering absolute pinpoint stars from edge to edge with no hint of color aberration. The view, especially during the daytime, is very pure with no noticeable color tint. And there wasn't a hint of ghosts or reflections, even with the brightest stars".

"What caught me a bit off guard, however, was something that's best described as the observing experience. It was distinctly pleasurable."

"I have the sensation of looking out of a circular window rather than into an eyepiece."

— di Cicco, Dennis. "Tele Vue's New Delos Eyepieces". Sky & Telescope (June 2011). p. 58, 59.

Tele Vue's Delos 14mm is a medium focal length eyepiece that creates an “immersive viewing experience”. With its generous 20mm eye-relief and wide 72° apparent field of view you will be hard pressed to find another eyepiece that is such a pleasure to look through. Amazing wide fields of view in well corrected refractors with short to medium focal lengths (over 1° FOV up to 1000mm focal length). While some of the shorter focal length Delos eyepieces may provide too much power in long focal length Cassegrains, the Delos 14mm is suitable for any focal length telescope.

There is a good chance the TeleVue Delos will be seen as the ultimate combination of performance, viewing comfort and price. If you've been keeping a spot in your case for an affordable, premium eyepiece, you should consider a Delos - you won't be disappointed! Lessons learned from the tremendously successful Ethos series were applied to develop this long eye-relief, 72° apparent field of view eyepiece line.

The Delos 14mm has standard a 1.25" barrel making it suitable for almost any telescope or even bino-viewers!

Tele Vue Delos 14mm - Specifications

• Model # EDL-14.0
• Focal Length 14mm
• Barrel Size 1.25"
• Apparent Field of View 72°
• Eye Relief 20mm
• Weight 408g
• Field Stop 17.3mm

Background:

In 2011 Tele Vue introduced the Delos, mid-to-short focal length line of 20mm eye-relief, 72° apparent field of view eyepieces. Every optical, mechanical, and ergonomic aspect was rethought to achieve reference-standard performance for any visual application.

The Delos was conceived as a narrower field Ethos. Reducing the field to 72° allowed freedom to increase eye-relief, while controlling pupil aberrations, all without making the eyepiece too large. With Ethos performance standards as benchmarks, the Delos design achieves full field sharpness, virtually perfect f θ (theta) distortion mapping, and color neutrality. Image fidelity is maximized utilizing glass matched multicoatings and anti-reflection surfaces throughout the eyepiece.

Contrast is further enhanced with a new, continuously adjustable height eyeguard system that can be locked in any position. Since the Delos eye-lens measures a quite large 35mm in diameter, preventing stray light from reflecting off the first surface and extraneous light from entering your eye pays off in a nice increase in perceived contrast. The eyeguard's sliding action allows for positioning the soft rubber eyeguard at the ideal height to suit the observer's preference. Indicator marks on the eyepiece body are handy reference guides for setting your perfect position. The eye-guard can also rotate for Dioptrx users.

Awards - Delos 6mm and 10mm

Reviews

Sky & Telescope Hot New Product for 2012 Award

Review of the 6mm & 10mm Delos from Astronomy Magazine, December 2011

Excerpts from Sky & Telescope, June 2011, review of Delos eyepieces:

WHAT WE LIKE:

Essentially perfect optics
"Immersive" observation experience

WHAT WE DON'T LIKE:

I spent several nights viewing the Moon, Saturn, stars and nebulae with a variety of telescopes … .

The Delos eyepieces are "easy to look through … . They have flat fields, delivering absolute pinpoint stars from edge to edge with no hint of color aberration. The view, especially during the daytime, is very pure with no noticeable color tint. And there wasn't a hint of ghosts or reflections, even with the brightest stars".

"What caught me a bit off guard, however, was something that's best described as the observing experience. It was distinctly pleasurable."

"I have the sensation of looking out of a circular window rather than into an eyepiece."

— di Cicco, Dennis. "Tele Vue's New Delos Eyepieces". Sky & Telescope (June 2011). p. 58, 59.

Tele Vue's Delos 10mm is a short to medium focal length eyepiece that will deliver amazing detail. Importantly though it still achieves a generous 20mm eye-relief and wide 72° apparent field of view. Amazing in well corrected refractors with short to medium focal lengths. The Delos 10mm is suitable for any focal length telescope. Some of the shorter focal length Delos eyepieces may provide too much power in long focal length Cassegrains. For example in an 8" f/10 telescope the 10mm Delos provides 200x magnification with eye-relief galore!

There is a good chance the TeleVue Delos will be seen as the ultimate combination of performance, viewing comfort and price. If you've been keeping a spot in your case for an affordable, premium eyepiece, you should consider a Delos - you won't be disappointed! Lessons learned from the tremendously successful Ethos series were applied to develop this long eye-relief, 72° apparent field of view eyepiece line.

The Delos 10mm for a standard 1.25" barrel diameter making it suitable for almost any telescope or even bino-viewers!

Tele Vue Delos 10mm - Specifications

• Model # EDL-10.0
• Focal Length 10mm
• Barrel Size 1.25"
• Apparent Field of View 72°
• Eye Relief 20mm
• Weight 408g
• Field Stop 12.7mm

Background:

In 2011 Tele Vue introduced the Delos, mid-to-short focal length line of 20mm eye-relief, 72° apparent field of view eyepieces. Every optical, mechanical, and ergonomic aspect was rethought to achieve reference-standard performance for any visual application.

The Delos was conceived as a narrower field Ethos. Reducing the field to 72° allowed freedom to increase eye-relief, while controlling pupil aberrations, all without making the eyepiece too large. With Ethos performance standards as benchmarks, the Delos design achieves full field sharpness, virtually perfect f θ (theta) distortion mapping, and color neutrality. Image fidelity is maximized utilizing glass matched multicoatings and anti-reflection surfaces throughout the eyepiece.

Contrast is further enhanced with a new, continuously adjustable height eyeguard system that can be locked in any position. Since the Delos eye-lens measures a quite large 35mm in diameter, preventing stray light from reflecting off the first surface and extraneous light from entering your eye pays off in a nice increase in perceived contrast. The eyeguard's sliding action allows for positioning the soft rubber eyeguard at the ideal height to suit the observer's preference. Indicator marks on the eyepiece body are handy reference guides for setting your perfect position. The eye-guard can also rotate for Dioptrx users.

Awards - Delos 6mm and 10mm

Reviews

Sky & Telescope Hot New Product for 2012 Award

Review of the 6mm & 10mm Delos from Astronomy Magazine, December 2011

Excerpts from Sky & Telescope, June 2011, review of Delos eyepieces:

WHAT WE LIKE:

Essentially perfect optics
"Immersive" observation experience

WHAT WE DON'T LIKE:

I spent several nights viewing the Moon, Saturn, stars and nebulae with a variety of telescopes … .

The Delos eyepieces are "easy to look through … . They have flat fields, delivering absolute pinpoint stars from edge to edge with no hint of color aberration. The view, especially during the daytime, is very pure with no noticeable color tint. And there wasn't a hint of ghosts or reflections, even with the brightest stars".

"What caught me a bit off guard, however, was something that's best described as the observing experience. It was distinctly pleasurable."

"I have the sensation of looking out of a circular window rather than into an eyepiece."

— di Cicco, Dennis. "Tele Vue's New Delos Eyepieces". Sky & Telescope (June 2011). p. 58, 59.

The 55mm focal length has the largest true field possible for 2" eyepiece holders -3 times the true field area of any 1¼" eyepiece. The focal plane is placed at the end of the barrel to minimize vignetting. Performance with Schmidt-Cassegrains is remarkable since it avoids the image degradation and severe vignetting which occurs when using telecompressors. Long eye-relief and unique adjustable eyeguard for eyeglass wearers.

Review

A must for deep sky fans. This good low power/wide field eyepiece has the largest true field and largest exit pupil possible for 2" eyepiece holders-3 times the field area of any 1 l/4" eyepiece.

Performance with Schmidt Cassegrains is remarkable since it avoids the image degradations and severe vignetting which occurs when using tele compressors.

The long eye relief and unique adjustable eye guard allows eyeglass wearers to see the full field of view even with their glasses on.

The rubber grip gives sure grip and makes it comfortable to use in cold weather.

Specifications 

Tele Vue's Delos 3.5mm is a short focal length eyepiece that will deliver high power magnification. Importantly though it still achieves a generous 20mm eye-relief and wide 72° apparent field of view. Amazing in well corrected refractors with short to medium focal lengths. High powered views without the need for a Barlows or Powermate!

There is a good chance the TeleVue Delos will be seen as the ultimate combination of performance, viewing comfort and price. If you've been keeping a spot in your case for an affordable, premium eyepiece, you should consider a Delos - you won't be disappointed! Lessons learned from the tremendously successful Ethos series were applied to develop this long eye-relief, 72° apparent field of view eyepiece line.

All focal lengths feature 1.25" barrels making them suitable for almost any telescope or even bino-viewers!

Tele Vue Delos 3.5mm - Specifications

• Model # EDL-03.5
• Focal Length 3.5mm
• Barrel Size 1.25"
• Apparent Field of View 72°
• Eye Relief 20mm
• Weight 499g
• Field Stop 4.4mm

Background:

In 2011 Tele Vue introduced the Delos, mid-to-short focal length line of 20mm eye-relief, 72° apparent field of view eyepieces. Every optical, mechanical, and ergonomic aspect was rethought to achieve reference-standard performance for any visual application.

The Delos was conceived as a narrower field Ethos. Reducing the field to 72° allowed freedom to increase eye-relief, while controlling pupil aberrations, all without making the eyepiece too large. With Ethos performance standards as benchmarks, the Delos design achieves full field sharpness, virtually perfect f θ (theta) distortion mapping, and color neutrality. Image fidelity is maximized utilizing glass matched multicoatings and anti-reflection surfaces throughout the eyepiece.

Contrast is further enhanced with a new, continuously adjustable height eyeguard system that can be locked in any position. Since the Delos eye-lens measures a quite large 35mm in diameter, preventing stray light from reflecting off the first surface and extraneous light from entering your eye pays off in a nice increase in perceived contrast. The eyeguard's sliding action allows for positioning the soft rubber eyeguard at the ideal height to suit the observer's preference. Indicator marks on the eyepiece body are handy reference guides for setting your perfect position. The eye-guard can also rotate for Dioptrx users.

Awards - Delos 6mm and 10mm

Reviews

Sky & Telescope Hot New Product for 2012 Award

Review of the 6mm & 10mm Delos from Astronomy Magazine, December 2011

Excerpts from Sky & Telescope, June 2011, review of Delos eyepieces:

WHAT WE LIKE:

Essentially perfect optics
"Immersive" observation experience

WHAT WE DON'T LIKE:

I spent several nights viewing the Moon, Saturn, stars and nebulae with a variety of telescopes … .

The Delos eyepieces are "easy to look through … . They have flat fields, delivering absolute pinpoint stars from edge to edge with no hint of color aberration. The view, especially during the daytime, is very pure with no noticeable color tint. And there wasn't a hint of ghosts or reflections, even with the brightest stars".

"What caught me a bit off guard, however, was something that's best described as the observing experience. It was distinctly pleasurable."

"I have the sensation of looking out of a circular window rather than into an eyepiece."

— di Cicco, Dennis. "Tele Vue's New Delos Eyepieces". Sky & Telescope (June 2011). p. 58, 59.

Review

This is a very good medium to low power eyepiece for viewing smaller emission and reflection nebulae, open clusters and for resolving stars in many globular clusters.

It can be used for low power lunar observing or even the planets. The rubber grip give sure grip and makes it comfortable to use in cold weather.

The 17mm eye relief makes it very comfortable to use and is a great eyepiece to barlow.

The 25mm TeleVue Plössl was top-rated in a recent test report of 31 eyepieces in Sky & Telescope magazine as being the best in its focal length.

Like all TeleVue Plossls it has filter threads to fit your filters and blackened lens edges as well as being parfocal.

Specifications

TheTele Vue Plossl 32mm has been around for decades and is still one of the best eyepieces on the market.

With 22mm of eye relief it suits every observer, even with eye glasses the full field of view the Tele Vue Plossl 32mm offers is superb.

Great eyepiece for larger clusters and nebulae.

Crisp and sharp from edge to edge with the same true field of view as the 40mm Plossl but with higher magnification.

Edge blackend lenses and thread barrel to take standard 1.25" filters.

Everyone should own a Tele Vue Plossl 32mm at some stage in their astronomy life.

Televue's 32mm Plossl is a favourite for those wanting to upgrade to a quality low power eyepiece. Certainly one of the best simple eyepieces ever made.

Specifications

Focal length: 32mm
Barrel Diameter: 31.7mm (1.25")
Apparent Field: 50°
Eye relief: 22mm
Field Stop Diameter: 27mm
Weight: 180g

Review

This is a very good low power/wide field eyepiece for ideal or large open clusters, emission and reflection nebulae, or large extended objects that require a big field of view, perfect for scanning the Milky Way star clouds in Scorpius- Sagittarius from a dark sky site

The rubber grip gives sure grip and makes it comfortable to use in cold weather. As with all TeleVue eyepieces all edges are edge blackened.

This one of the Classic eyepieces to own offering improved edge-to-edge sharpness, and a wider and brighter field of view to the standard 25mm eyepiece that comes with most telescopes.. The 22mm of eye relief offers unvignetted viewing for eyeglass wearers.

It is parfocal with the shorter focal length Plossls.

The 32mm Plossl, with its larger 50 degree apparent field, will deliver the same true field as the 40mm but with higher magnification. Filter threads to fit your filters.

Specifications

Review

This is a very good low power/wide field eyepiece. With 43 degree apparent field it provides the widest field possible from a 1.25” eyepiece. It's ideal for large open clusters, emission and reflection nebulae, large and faint nebula remnants such as the Vela Supernova Remnant and galaxy clusters.

The rubber grip gives sure grip and makes it comfortable to use in cold weather.. Better suited to the longer focal ratios of refractors, Schmidt-Cassegrains, and Maksutov-Cassegrains than it is to reflectors with focal ratios shorter than f/6.

In scopes that are longer than f/6, it will give you the widest and brightest field possible from a 1.25” focuser telescope.

The 28mm of eye relief makes it a good choice for eyeglasses wearers. It' s parfocal with the shorter focal length Plossls. Filter threads to fit your filters and blackened lens edges.

Specifications

Tele Vue's Delos 4.5mm is a short focal length eyepiece that will deliver high power magnification. Importantly though it still achieves a generous 20mm eye-relief and wide 72° apparent field of view. Amazing in well corrected refractors with short to medium focal lengths. High powered views without the need for a Barlows or Powermate!

There is a good chance the TeleVue Delos will be seen as the ultimate combination of performance, viewing comfort and price. If you've been keeping a spot in your case for an affordable, premium eyepiece, you should consider a Delos - you won't be disappointed! Lessons learned from the tremendously successful Ethos series were applied to develop this long eye-relief, 72° apparent field of view eyepiece line.

The Delos 4.5mm has a standard 1.25" barrel making it suitable for almost any telescope or even bino-viewers!

Tele Vue Delos 4.5mm - Specifications

• Model # EDL-04.5
• Focal Length 4.5mm
• Barrel Size 1.25"
• Apparent Field of View 72°
• Eye Relief 20mm
• Weight 499g
• Field Stop 5.6mm

Background:

In 2011 Tele Vue introduced the Delos, mid-to-short focal length line of 20mm eye-relief, 72° apparent field of view eyepieces. Every optical, mechanical, and ergonomic aspect was rethought to achieve reference-standard performance for any visual application.

The Delos was conceived as a narrower field Ethos. Reducing the field to 72° allowed freedom to increase eye-relief, while controlling pupil aberrations, all without making the eyepiece too large. With Ethos performance standards as benchmarks, the Delos design achieves full field sharpness, virtually perfect f θ (theta) distortion mapping, and color neutrality. Image fidelity is maximized utilizing glass matched multicoatings and anti-reflection surfaces throughout the eyepiece.

Contrast is further enhanced with a new, continuously adjustable height eyeguard system that can be locked in any position. Since the Delos eye-lens measures a quite large 35mm in diameter, preventing stray light from reflecting off the first surface and extraneous light from entering your eye pays off in a nice increase in perceived contrast. The eyeguard's sliding action allows for positioning the soft rubber eyeguard at the ideal height to suit the observer's preference. Indicator marks on the eyepiece body are handy reference guides for setting your perfect position. The eye-guard can also rotate for Dioptrx users.

Awards - Delos 6mm and 10mm

Reviews

Sky & Telescope Hot New Product for 2012 Award

Review of the 6mm & 10mm Delos from Astronomy Magazine, December 2011

Excerpts from Sky & Telescope, June 2011, review of Delos eyepieces:

WHAT WE LIKE:

Essentially perfect optics
"Immersive" observation experience

WHAT WE DON'T LIKE:

I spent several nights viewing the Moon, Saturn, stars, and nebulae with a variety of telescopes

The Delos eyepieces are "easy to look through … . They have flat fields, delivering absolute pinpoint stars from edge to edge with no hint of color aberration. The view, especially during the daytime, is very pure with no noticeable color tint. And there wasn't a hint of ghosts or reflections, even with the brightest stars".

"What caught me a bit off guard, however, was something that's best described as the observing experience. It was distinctly pleasurable."

"I have the sensation of looking out of a circular window rather than into an eyepiece."

— di Cicco, Dennis. "Tele Vue's New Delos Eyepieces". Sky & Telescope (June 2011). p. 58, 59.

Tele Vue's Delos 8mm is a short to mid focal length eyepiece that will deliver useful magnification in almost any telescope. With a generous 20mm eye-relief and wide 72° apparent field of view the views will astound. Wide fields of view in telescopes with short to medium focal lengths (almost 1° in 600mm focal length telescopes). Mid to high powered views without the need for a Barlows or Powermate in Cassegrain telescopes! The Delos 8mm would be a worth investment for just about any telescope

There is a good chance the TeleVue Delos will be seen as the ultimate combination of performance, viewing comfort and price. If you've been keeping a spot in your case for an affordable, premium eyepiece, you should consider a Delos - you won't be disappointed! Lessons learned from the tremendously successful Ethos series were applied to develop this long eye-relief, 72° apparent field of view eyepiece line.

The Delos 8mm has a standard 1.25" barrel making it suitable for almost any telescope or even bino-viewers!

Tele Vue Delos 8mm - Specifications

• Model # EDL-08.8
• Focal Length 8mm
• Barrel Size 1.25"
• Apparent Field of View 72°
• Eye Relief 20mm
• Weight 454g
• Field Stop 9.9mm

Background:

In 2011 Tele Vue introduced the Delos, mid-to-short focal length line of 20mm eye-relief, 72° apparent field of view eyepieces. Every optical, mechanical, and ergonomic aspect was rethought to achieve reference-standard performance for any visual application.

The Delos was conceived as a narrower field Ethos. Reducing the field to 72° allowed freedom to increase eye-relief, while controlling pupil aberrations, all without making the eyepiece too large. With Ethos performance standards as benchmarks, the Delos design achieves full field sharpness, virtually perfect f θ (theta) distortion mapping, and color neutrality. Image fidelity is maximized utilizing glass matched multicoatings and anti-reflection surfaces throughout the eyepiece.

Contrast is further enhanced with a new, continuously adjustable height eyeguard system that can be locked in any position. Since the Delos eye-lens measures a quite large 35mm in diameter, preventing stray light from reflecting off the first surface and extraneous light from entering your eye pays off in a nice increase in perceived contrast. The eyeguard's sliding action allows for positioning the soft rubber eyeguard at the ideal height to suit the observer's preference. Indicator marks on the eyepiece body are handy reference guides for setting your perfect position. The eye-guard can also rotate for Dioptrx users.

Awards - Delos 6mm and 10mm

Reviews

Sky & Telescope Hot New Product for 2012 Award

Review of the 6mm & 10mm Delos from Astronomy Magazine, December 2011

Excerpts from Sky & Telescope, June 2011, review of Delos eyepieces:

WHAT WE LIKE:

Essentially perfect optics
"Immersive" observation experience

WHAT WE DON'T LIKE:

I spent several nights viewing the Moon, Saturn, stars and nebulae with a variety of telescopes … .

The Delos eyepieces are "easy to look through … . They have flat fields, delivering absolute pinpoint stars from edge to edge with no hint of color aberration. The view, especially during the daytime, is very pure with no noticeable color tint. And there wasn't a hint of ghosts or reflections, even with the brightest stars".

"What caught me a bit off guard, however, was something that's best described as the observing experience. It was distinctly pleasurable."

"I have the sensation of looking out of a circular window rather than into an eyepiece."

— di Cicco, Dennis. "Tele Vue's New Delos Eyepieces". Sky & Telescope (June 2011). p. 58, 59.