ZWO EAF Bracket for C8-C9.25 Celestron Scopes

(this part is defined as optional accessories for ZWO EAF)

This bracket is designed to work with

• 8" SCT
• 8" SCT Edge HD
• RASA 8
• 9.25" SCT
• 9.25" SCT Edge HD

You can directly connect it to the scopes.

The ZWO EAF Bracket C8-C9.25 is CNC milled from an aircraft graded aluminium block with an anodised finish.

Takes 15minutes to fit.

Fitting hardware supplied

Installation instructions included

Whats in the box?

Flexible coupling x1

Motor bracket x1

M4-8mm x2

M3-14mm x3

CELESTRON REDUCER/CORRECTOR F/6.3

This combination focal reducer and field corrector lens accessory works with all Celestron 5", 6", 8", 9 1/4", 11" and 14" Schmidt-Cassegrain telescopes. This clever accessory makes it possible to have a dual focal ratio instrument, without sacrificing image quality. The Reducer/Corrector is f/6.3 for C5, C6, C8, C9¼ and C11 telescopes and f/7 for the C14 telescope.

If offers wide fields of view with any Schmidt-Cassegrain telescope. Used for astrophotography, it reduces exposure time by a factor of 3.

Celestron doesn’t offer a f/6.3 Schmidt-Cassegrain telescope, because the design is impractical, with a large central obstruction, and resulting loss in contrast. This, added to the inability to utilize longer focal ratios for certain objects, led Celestron to design the four-element, fully multicoated f/6.3 Reducer/Corrector. Results are amazing both visually and photographically.

Produces a corrected field of 24mm diameter. The back focus is 105mm, from the reducer's back element to the camera's sensor

THE #94175 REDUCER/CORRECTOR LENS IS NOT COMPATIBLE WITH CELESTRON EDGEHD or MEADE ACF OPTICAL SYSTEMS.

With a generous 6 inch aperture the Celestron NexStar 6SE Telescope provides excellent light-gathering ability at an affordable price. You’ll be thrilled with views of the Moon and planets, along with deep sky objects like the Orion Nebula while retaining a compact size. Its fully automated GoTo computerised mount with database of 40,000+ celestial objects automatically locates and tracks objects for you.

SkyAlign Technology

SkyAlign makes aligning a computerized telescope fast, easy, and accurate. Simply point at any three bright objects in the sky and the telescope aligns itself. From there, navigation and tracking is as easy as pushing a button.

Unique Single Fork Mount Design

Debate about the "best" telescope is nearly as endless as the Universe itself. But we know one thing quite well - the best telescope is the one you will use most often! That’s why Celestron’s engineers created NexStar SE’s unique, single fork arm mount. It’s perfectly portable and makes for quick and easy set up. The NexStar SE disassembles into several lightweight and compact pieces, making it easy to transport, even in small vehicles. You’ll have no problem getting the NexStar SE to your favorite observing site, or setting it up quickly at home.

Of course, it’s what’s inside the mount that really counts. Sturdy construction from high-quality components give the Celestron NexStar 6SE Telescope the pointing and tracking accuracy needed to observe and follow your favorite targets with push-button ease. Use the included NexStar+ hand control to locate over 40,000 celestial objects, or take a Sky Tour and let your telescope show you the best objects currently visible.

Advanced Features Let the Celestron NexStar 6SE Telescope Grow with You

The Celestron NexStar 6SE Telescope is compatible with all the high-tech accessories advanced users love. Provide GPS coordinates to your telescope with SkySync. If you want to explore the world of astroimaging, the 6SE is a perfect choice. Or, if you’re interested in imaging the Moon and planets, pair your NexStar 6SE with one of our ZWO planetary imaging cameras.

Celestron NexStar 6SE Telescope Specifications

Visit Celestron for Further Information

From your first observing session and for years to come, the Celestron NexStar 6SE Telescope is your trusted companion. For further information, including manuals and videos visit the Celestron website.

Celestron NexStar RS 232 Cable

The Celestron RS-232 Cable connects your computerized telescope to a laptop or PC for control via various planetarium software programs.
Attaches to the computer’s serial port and the telescope’s hand control via a phone jack plug.
The Celestron NexStar RS-232 Cable is also necessary for flash upgrades to hand control software.
Cable is 1.5m long.
Please note many computers or laptops will not have a serial port. You will need to use a USB-to-Serial adapter in this instance.

With a generous 5 inch aperture the Celestron NexStar 5SE Telescope provides excellent light-gathering ability at an affordable price. You’ll be thrilled with views of the Moon and planets, along with deep sky objects like the Orion Nebula while retaining a compact size. Its fully automated GoTo computerised mount with database of 40,000+ celestial objects automatically locates and tracks objects for you.

SkyAlign Technology

SkyAlign makes aligning a computerized telescope fast, easy, and accurate. Simply point at any three bright objects in the sky and the telescope aligns itself. From there, navigation and tracking is as easy as pushing a button.

Unique Single Fork Mount Design

Debate about the "best" telescope is nearly as endless as the Universe itself. But we know one thing quite well - the best telescope is the one you will use most often! That’s why Celestron’s engineers created NexStar SE’s unique, single fork arm mount. It’s perfectly portable and makes for quick and easy set up. The NexStar SE disassembles into several lightweight and compact pieces, making it easy to transport, even in small vehicles. You’ll have no problem getting the NexStar SE to your favorite observing site, or setting it up quickly at home.

Of course, it’s what’s inside the mount that really counts. Sturdy construction from high-quality components give the Celestron NexStar 5SE Telescope the pointing and tracking accuracy needed to observe and follow your favorite targets with push-button ease. Use the included NexStar+ hand control to locate over 40,000 celestial objects, or take a Sky Tour and let your telescope show you the best objects currently visible.

Advanced Features Let the Celestron NexStar 5SE Telescope Grow with You

The Celestron NexStar 5SE Telescope is compatible with all the high-tech accessories advanced users love. Provide GPS coordinates to your telescope with SkySync. If you want to explore the world of astroimaging, the 5SE is a perfect choice. Its built-in wedge allows you to track long exposures. Or, if you’re interested in imaging the Moon and planets, pair your NexStar 5SE with one of our ZWO planetary imaging cameras.

Suggested Accessories

Suitable Solar Filter

https://www.youtube.com/watch?v=HKEwPntn7YU

If you'd like accessories for your new telescope, we suggest this Observer's Kit would be an ideal add-on:

Celestron NexStar 5SE Telescope Specifications

Visit Celestron for Further Information

From your first observing session and for years to come, the Celestron NexStar 5SE Telescpope is your trusted companion. For further information, including manuals and videos visit the Celestron website.

With a generous 8 inch aperture the Celestron NexStar 8SE Telescope provides excellent light-gathering ability at an affordable price. You’ll be thrilled with views of the Moon and planets, along with deep sky objects like the Orion Nebula while retaining a compact size. Its fully automated GoTo computerised mount with database of 40,000+ celestial objects automatically locates and tracks objects for you.

SkyAlign Technology

SkyAlign makes aligning a computerized telescope fast, easy, and accurate. Simply point at any three bright objects in the sky and the telescope aligns itself. From there, navigation and tracking is as easy as pushing a button.

Unique Single Fork Mount Design

Debate about the "best" telescope is nearly as endless as the Universe itself. But we know one thing quite well - the best telescope is the one you will use most often! That’s why Celestron’s engineers created NexStar SE’s unique, single fork arm mount. It’s perfectly portable and makes for quick and easy set up. The NexStar SE disassembles into several lightweight and compact pieces, making it easy to transport, even in small vehicles. You’ll have no problem getting the NexStar SE to your favorite observing site, or setting it up quickly at home.

Of course, it’s what’s inside the mount that really counts. Sturdy construction from high-quality components give the Celestron NexStar 8SE Telescope the pointing and tracking accuracy needed to observe and follow your favorite targets with push-button ease. Use the included NexStar+ hand control to locate over 40,000 celestial objects, or take a Sky Tour and let your telescope show you the best objects currently visible.

Advanced Features Let the Celestron NexStar 8SE Telescope Grow with You

The Celestron NexStar 8SE Telescope is compatible with all the high-tech accessories advanced users love. Provide GPS coordinates to your telescope with SkySync. If you want to explore the world of astroimaging, the 8SE is a perfect choice. Or, if you’re interested in imaging the Moon and planets, pair your NexStar 8SE with one of our ZWO planetary imaging cameras.

Celestron NexStar 8SE Telescope Specifications

New Version : THE ZWO ASIAIR Plus 256G

The new ZWO ASIAIR Plus has 256Gb of memory and replaces previous the ZWO ASIAIR Plus with 32Gb of memory which has been discontinued. ZWO now have two versions of the ZWO ASIAIR - this one and the ZWO ASIAIR Mini.

With its new sleeker body it is 24% thinner and 13% lighter than the Original ASIAIR Plus. It features 4 DC 12V outputs, A DSLR Camera shutter release port, RJ45 Ethernet port, 2 USB 3.0 ports, 2 USB 2.0 ports, a newly added USB Type-C port, and an expansion card slot. All packed into a 100mm x 70mm x 26.5mm CNC-machined Aluminium case and of course it is ZWO Red in colour.

The New ZWO ASIAIR PLus 256 G is integrated with 256Gb eMMC Storage that offers faster data transmission speed .

Imaging efficiency at short exposures improves by 26%

FPS on video mode improves by 30%

Enhance Antenna provides stronger WiFi signal and faster communications.

Dual Band WiFi network with a working range of up to 20m. 5Ghz WiFi is faster than 2.4Ghz WiFi, but the range is shorter. The 20M working range is the average of multiple tests in open space at 2.4Ghz. When assembling the ASIAIR Plus, keep the USB 3.0 cable away from the WiFi antenna.

Easy to use Interfaces gives you full control of your gear. 2 x USB 3.0, 2 USB 2.0ports an ethernet port 4 x 12v DC power outlets to connect your cooled camera, dew heater, EAF focuser etc. The newly added USB type C port for exporting your files to your laptop or PC.

Upgradable Storage Capacity: supports external TF cards and USB Drives.

PWR - Input power status display

WIFI - Wireless Network status display

SYS - System I/O status display

12vDC output Power Indicators

Realtime monitoring - 12vDC outputs control switch in App. Along with monitoring unit for ASIAIR Plus's working status.

The whole ASIAIR experience - Astrophotography has never been easier.

System requirements:

In the Box: ASIAIR256 G Controller, ASIAIR Plus Quick Star Guide, ASIAIR Plus Activation Guide, DC 1.5M male - female extension cable (5.5 x 2.1mm standard) USB 3.0 Type B data cable

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™.

The thickness of the anti-dew heater strip is 0.2~0.3mm.

The “Y” power cord is designed to connect in-line with the cooler power supply for convenience.

We recommend a DC adapter giving 12V at 0.35 A resulting in a heating power on the strip that is around 4.2 watts. You can use one and same power cord to power both the fan and heater simultaneously, but make sure not to exceed recommended amount of Ampere.

NOTE: for many ASI cameras a heater strip is not necessary since they have one that is built into the cameras themselves.

ASI071MC-P/ASI6200/ASI2600/ASI2400 cameras come with an anti-dew heater that will heat the protective glass to avoid any dew problems.

For ASI183/ASI1600/ASI294/ASI533 cameras, the heat emitting from the TEC will be conducted to the camera case and avoid any dew problems when TEC cooling system is working.

This kit includes the zip-tie, anti-dew heater strip , an Y power cord and two spacers：

How to use it?

1. Tear out the protective film on adhesive tape

3. Tie the black cable with a zip-tie on the camera body.

4. Plug in the power cord, then everything is done.

Now you should be dew-free while shooting with the camera.

The Saxon 8" DeepSky （203/1200）Dobsonian Telescope is the perfect partner to begin your astronomy adventure with. This affordable telescope comes with a "paraboloidal" primary mirror to eliminate spherical aberration and a four-arm, secondary-mirror bracket with fine supports (0.5mm thick) to reduce diffraction spikes and light loss.

This telescope comes with an aperture of 203mm and a focal length of 1200mm in a 8" tube. This scope features quality parts and accessories - the special roller-bearing construction, Crayford focuser, eyepieces and finderscope are all designed to aid with your observing experience. Once assembled and with a little practice, you'll soon be able to find and view the rocky surfaces of the Moon, planets in the Solar System as well as deep sky objects such as star clusters, double stars, nebulae and galaxies.

The Saxon 8" DeepSky Dobsonian Telescope requires no additional tools during assembly and is incredibly easy to use, making it the perfect scope for beginner astronomers.

What is Dobsonian Telescope and Why the Tension Control Handle?

A simple, elegant form of an alt-azimuth mount made to carry a Newtonian reflector was popularized by John Dobson in the late 1970's. The Dobsonian mounted telescope is popular among amateur astronomers and telescope makers because of its simplicity. In its simplest form, the Dobsonian mount consists of a box which allows the optical tube assembly to pivot in altitude, while the box itself is swivelled on a base in azimuth.

The Dobsonian mount usually relies on the friction between the side bearings on the optical tube of the telescope and a frictional material on the saddle to hold the optical tube in place. If there is too much friction, the telescope is difficult to move to center an object in the filed of view. If there is too little friction, the telescope will not sty where it is positioned. This makes stabilizing the optical tube of the telescope difficult when using a Dobsonian mount, especially when accessories, such as a finderscope or an eyepiece, are added to the optical tube. As long as the amount of friction is at an appropriate level, and therefore stabilization of the optical tube is achieved, the telescope can remain in its desired position to view an object and maintain its position even when the mount is rotated.

The devices for stabilizing a telescope on the Dobsonian mount currently available include: a sliceable weight to counter balance the weight of the telescope, a friction lock that must be adjusted to inhibit movement of the telescope, and a spring attached between the telescope tube and mount to aid in stabilization.

These devices are inconvenient to use because they do not provide a simple and user-friendly way to adjust the friction. The objective of the saxon Tension Control Handle invention is to provide a tension adjuster that users can easily turn to add or reduce tension, thereby increasing or decreasing the friction between the optical tube and the sideboard of the mount.

By providing such a tension adjuster, the telescope does not need to be balanced in order to stay in position. The tension adjuster can be tightened such that the optical tube can stay in a position but can still be moved when prompted to adjust the position of the optical tube. Alternatively, the tension adjuster can be completely tightened to lock the optical tube in position.

Optical tube in one hand and tripod in the other? Still carrying your bulky telescope box to remote observing sites? Let us lighten your load with our sleek, padded, protective telescope soft case. This all-in-one storage solution is the perfect choice for transporting your telescope setup anywhere with ease and confidence. It’s truly a must-have for telescope owners of all stripes.

Ultra-durable Material

The Telescope Soft Case is constructed from 900 denier polyester for durability and weather resistance. Its walls are lined with 16mm thick EPE foam to protect your gear. The bottom panel is reinforced with a hard layer of PVC for extra protection from minor bumps. On the exterior, you’ll find hard rubber elements that provide extra strength and water resistance.

Design your Custom Case

Unzip the case and you’ll discover a soft polyester interior lining with three configurable EVA foam padded walls. Use the Velcro to place the foam walls in the exact configuration you need for your equipment, creating custom compartments for your optical tube, mount, and tripod. Once your equipment is stowed safely inside, secure it in place with the internal straps. With shorter tubes, you’ll have some leftover interior space to stash extra accessories.

In addition to the configurable compartments inside, the case features a bonus 9” x 12” padded accessory bag and an external zippered pocket, for holding eyepieces and other accessories. Lastly, you’ll find sewn-on fabric loops on the outside of the case. Use these to clip even more accessories to the exterior of the case.

Grab and Go

Transport your case one of two ways: via the pair of sewn in handles or optional, clip in padded shoulder strap for hands-free carrying.

Compatible Celestron Telescopes

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.

Package includes four desiccant tablets for use with all ZWO cooled cameras.

Product Description

ZWO Holder Ring for ZWO ASI PRO COOLED CAMERAS with appr 78mm diameter.

Currently compatible with the following ZWO cameras: ASI1600 Pro, ASI183 Pro , ASI294 Pro, ASI533 Pro, ASI178 Cooled cameras, ASI174 Cooled cameras and ASI385MC cooled cameras.

NOTICE: ASI094, ASI128 & ASI071 cameras are required 86mm holder ring.

There is an M6 screw on the beside of the holder ring, loose the screw and mount the camera to tripod easily.

ZWO ADC is voted as “HOT SKY PRODUCT – 2017” 

ZWO Atmospheric Dispersion Corrector is used to reduce the effect of atmospheric dispersion on lunar and planetary images

The prisms are the heart of the ADC

Material: H-K9L(Schott BK7)

Surface Accuracy: λ/10@632.8nm

Deviation Angle: 2°

ZWO ASI533MC-Pro

ASI 533MC-P is the new One Shot Colour cameras from ZWO.

Sensor is the square back illuminated Sony ExMor IMX533 sensor.

Resolution is 3008 x 3008 with 3.76um pixels.

The sensor size is 11.31mm x 11.31mm for 9.07Mp.

Max FPS at Full Resolution is 20FPS.

Read Noise is very low at 1.0e to 3.83e

QE peak up to 80%

Full Well is 50Ke

Exposure Range is 32us – 2000s

ADC 14bit

Cooling to -40 ° ambient temperature.

256MB internal DDR3 memory

The ASI533MC PRO features SONY’s latest back illuminated IMX533 sensor, with a 1-inch square, 9.07MP sensor that is ideal for astronomical photography needs and can be considered as the latest iteration of the venerable ASI183MC Pro.

As you would expect this latest generation camera not only retains key features of the ASI183 series such as an attractive QE figure, high frame rate and along with other excellent characteristics of the ASI183 cameras, but also now includes new and improved features such as zero amp glow, extreme low read out noise (as low as 1.0e), 3.76 microns pixel size and an improved 2 stage TEC cooler giving enhanced cooling capabilities.

1” square sensor

The IMX533 is a 1-inch, 9MP CMOS image sensor in a square format with a 3.76 um pixel size, capable of producing frames at 20 frames/sec in 14bit mode.

Read out noise is as low as 1.0e which makes it comparable to SCMOS or EMCCD sensors and highly suitable for high definition, low noise imaging.

IMX533 backlit sensor

Sony’s back-illuminated CMOS image sensor improves sensitivity and noise reduction – the key factors to enhancing image quality, while radically realigning their fundamental pixel structure from front-illumination to back-illumination. It has retained the advantages of CMOS image sensors such as low power consumption and high-speed operation.

With a conventional front-illumination structure, the metal wiring and transistors on the surface of the silicon substrate that form the sensor’s light-sensitive area (photo-diode) impede photon gathering carried out by the on-chip lens. A back-illuminated structure minimizes the degradation of sensitivity to optical angle response, while also increasing the amount of light that enters each pixel due to the lack of obstacles such as metal wiring and transistors that have been moved to the reverse of the silicon substrate.
Sony has newly developed a unique photo-diode structure and on-chip lens optimized for back-illuminated structures, that achieves a higher sensitivity and a lower random noise without light by reducing noise, dark current and defect pixels compared to the conventional front-illuminated structure.

Camera Performance

Low read-out noise, high dynamic range.

ASI533MC Pro – ASI183MC Pro Comparision

The Celestron NexStar Evolution 6 Telescope offers amateurs a powerful optical device which is not only portable, but provides phenomenal views of the universe. Like the original NexStar SE series, the Celestron NexStar Evolution 6 Telescope features the same high quality Schmidt-Cassegrain optics but benefits from the modern improvements including: a smooth computerized alt-azimuth mount, StarBright XLT optical coatings, and no-nonsense SkyAlign technology.

The true draw card is that the Celestron NexStar Evolution series are the first Schmidt-Cassegrain telescopes with integrated WiFi. You no longer need your hand controller to slew to all the best celestial objects. Instead you can explore the night sky with a tap of your smartphone or tablet. Connect your device to built-in Celestron NexStar Evolution 6 Telescope wireless network, and explore the universe with the free Celestron mobile app for iOS and Android. Enjoy the convenience of a planetarium interface to view the night sky in real time or display a list of celestial objects currently visible based on your time and location. Celestron's proprietary SkyAlign alignment procedure is built right into the Celestron mobile app, so you’re ready to observe within minutes.

Optional Solar Filter

Forget about batteries or an external power supply. For the first time ever on a consumer telescope, NexStar Evolution includes its own built-in battery. With this ultra-long life lithium-ion phosphate battery, you’ll be able to enjoy stargazing marathons up to 10 hours on a single charge. You can even use NexStar Evolution’s USB charge port to top off the other devices in your life that need to stay powered on during an observing session. An intelligent power management system senses when battery levels are low and goes into power-saving mode to keep your telescope running for as long as possible.

If you’re interested in astroimaging, the Celestron NexStar Evolution 6 Telescope is an excellent, affordable way to get started. It’s the only fork-mounted telescope in its price range that offers brass worm gears, along with improved motors. NexStar Evolution’s tracking accuracy is so impressive, you can capture images of deep-sky objects like the Orion Nebula by simply attaching your DSLR camera. As you progress with imaging, you can add the Evolution Equatorial Wedge allowing longer exposures than conventional alt-az tracking, for more detailed deep sky portraits.

Even if you don't own the NexStar Evolution 6 just yet, check out the Sky Portal app. Search for astronomical wonders you wish to discover, then go and find them! Choose from a seemingly endless database of planets, satellites, stars, Messier objects, constellations, meteor showers, and deep sky targets. Download yourself and try it out today - search for "Celestron Sky Portal" on Google Play or the Apple Store.

Celestron NexStar Evolution 6 Telescope - Specifications

Suggested Accessories

Visit Celestron for Further Information on the Celestron NexStar Evolution 6 Telescope

From your first observing session and for years to come, the NexStar Evolution is your trusted companion. For further information, including manuals and videos visit the Celestron website.

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 Celestron Focus Motor for SCT & EdgeHD provides electronic focusing for Celestron Schmidt-Cassegrain (SCT) and EdgeHD telescope optical tubes. With the focus motor installed, you can bring celestial objects into sharp, precise focus using your telescope’s hand controller or a computer instead of using the focuser knob. A focus motor is great for visual observers who want to dial in exact focus (especially those with dexterity issues) and a must-have accessory for astroimagers. With a motorized focuser installed, an astroimager no longer needs to be physically near the telescope to focus an image. Combined with computerized control of the mount and camera, the focus motor enables the imager to gather data remotely from a backyard observatory, or even a telescope located hundreds of miles away. As an added bonus, port covers protect the ports while not in use, and the covers cannot be lost due to the tethered design.

Compatible Optical Tubes

The focus motor is compatible with all SCTs from 6” to 14” in aperture that have been produced since the year 2006. It is not compatible with 5” SCTs or older models. It is compatible with all EdgeHD optical tubes, the 8” Rowe-Ackermann Schmidt Astrograph (RASA), the 36cm RASA, and the 7” Maksutov-Cassegrain. It can also be used with the 11” RASA, but requires the Focuser Retrofit Kit for RASA 11.

Power Options

There are three options for powering your Celestron Focus Motor:

1. When using a Celestron computerized mount, you can power and control the focus motor through the mount using the supplied AUX cable. This allows control from the mount’s hand controller (NexStar+ or StarSense) or a computer.
2. If you are not using a Celestron mount, you can power and control the focus motor from a computer USB port. You will need a user supplied USB A-to-B cable.
3. You may also opt to use an external 12V DC power source which plugs into the motor’s power jack.

Compatible Software

Celestron offers a free Focuser Utility program for computer control. The Celestron PWI software can also control the focus motor. To use third-party focuser control software, an ASCOM driver is needed.

Celestron Focus Motor Bulletin

SPECIFICATIONS

The Celestron NexStar Evolution 9.25 Telescope offers amateurs a powerful optical device which is not only portable, but provides phenomenal views of the universe. Like the original NexStar SE series, the Celestron NexStar Evolution 9.25 Telescope features the same high quality Schmidt-Cassegrain optics but benefits from the modern improvements including: a smooth computerized alt-azimuth mount, StarBright XLT optical coatings, and no-nonsense SkyAlign technology.

The true draw card is that the Celestron NexStar Evolution series are the first Schmidt-Cassegrain telescopes with integrated WiFi. Leave your hand control behind and slew to all the best celestial objects with a tap of your smartphone or tablet. Connect your device to built-in Celestron NexStar Evolution 9.25 Telescope wireless network, and explore the universe with the free Celestron mobile app for iOS and Android. Use the planetarium interface to view the night sky in real time or display a list of celestial objects currently visible based on your time and location. Celestron's proprietary SkyAlign alignment procedure is built right into the Celestron mobile app, so you’re ready to observe within minutes.

Forget about batteries or an external power supply. For the first time ever on a consumer telescope, NexStar Evolution includes its own built-in battery. With this ultra-long life lithium-ion phosphate battery, you’ll be able to enjoy stargazing marathons up to 10 hours on a single charge. You can even use NexStar Evolution’s USB charge port to top off the other devices in your life that need to stay powered on during an observing session. An intelligent power management system senses when battery levels are low and goes into power-saving mode to keep your telescope running for as long as possible.

If you’re interested in astroimaging, the Celestron NexStar Evolution 9.25 Telescope is an excellent, affordable way to get started. It’s the only fork-mounted telescope in its price range that offers brass worm gears, along with improved motors. NexStar Evolution’s tracking accuracy is so impressive, you can capture images of deep-sky objects like the Orion Nebula by simply attaching your DSLR camera. As you progress with imaging, you can add the Evolution Equatorial Wedge allowing longer exposures for more detailed deep sky portraits.

Even if you don't own the NexStar Evolution 9.25 just yet, check out the Sky Portal app. Search for astronomical wonders you wish to discover, then go and find them! Choose from a seemingly endless database of planets, satellites, stars, Messier objects, constellations, meteor showers, and deep sky targets. Download yourself and try it out today - search for "Celestron Sky Portal" on Google Play or the Apple Store.

Celestron NexStar Evolution 9.25 Telescope - Specifications

ZWO IR cut filter 2 inch is suitable for colour camera with AR protect window.

The ZWO IR Cut Filter 2 inch blocks infrared light from reaching the sensor of your CCD or CMOS camera or your expensive H-alpha filter. When imaging, the addition of this simple and inexpensive accessory will result in sharper images, and when doing solar work, the IR Cut Filter will your protect H-alpha filter from the damaging effects of infrared radiation.

Infrared or IR light is invisible to the human eye, and so even though most telescopes are not designed to focus IR light, it does not matter when you are using your telescope visually. However, when you add a camera to the mix, its a whole other story! Unlike the human eye, a silicon sensor is very sensitive to light in the infrared portion of the spectrum, and that is a problem because infrared images are blurry as all get out. That means your nice, sharp visual light image is degraded by the addition of the infrared layer. This problem can easily be solved by blocking the infrared, and the ZWO IR Cut filter 2 inch will do just that.

The ZWO IR Cut filter is housed in a 2″ cell, and has internal threads so that you can stack filters together. The filter comes with a protective plastic case.

Technical Parameter:

Name: IR-cut filter

Size: 2″

Thickness: 5mm+2mm(Thread)

Thread: M48*0.75 male thread

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.

The NEW ZWO EAF Hand Controller is the perfect way to control the EAF (Electronic Automatic Focuser).

The smooth ergonomic design provides a comfort grip. Made from environmentally friendly APS material.

Features In and Out buttons and has two speed control. It comes with a 3.5mm female socket.

This is a “must-have” option for EAF user.

EAF Quick Start Guide

OVERVIEW

• Upgrade your Celestron computerized telescope to GPS with SkySync.
• Improve the speed and accuracy of alignments with 16-channel GPS.
• Automatically updates the time and date.
• Plugs into the AUX port on the base of the telescope

Compatible for all non-GPS Celestron computerized telescopes.

Enhance your viewing experience with Celestron's EclipSmart Solar Filter for Celestron 8” telescopes. With two Velcro straps and four self-adhesive Velcro pads for added safety, you can be assured that the solar filter cannot be accidentally knocked off and will provide Solar Safe, ISO compliant viewing.

Solar Safe Technology

EclipSmart solar products feature Solar Safe filter technology providing the ultimate protection from harmful solar radiation, including both IR and UV light, and filters 99.999% of visible light. Celestron Solar Safe filter technology is GUARANTEED SAFE for direct solar observation and has been independently tested by SAI Global Assurance Services.

Solar Safe products conform to and meet the transmission requirements of ISO 12312-2, Filters for Direct Observation of the Sun, EN 1836:2005 + A1:2007 (E) for an E15 Filter for the Direct Observation of the Sun and, AS/NZS 1338.1:2012, Filters for Eye Protectors.