Kendrick Secondary Heater Wrap-Small heaters are designed to work with Newtonian/Dobsonian secondary mirrors that are attached to a “stalk”, but don’t have enough exposed mirror to use our “Split-Ring” or Elliptical style heaters. The heater warms the stalk, and that heat is then conducted to the mirror.

How to choose the right model for your telescope?

It’s easy! You just need to make a few easy measurements. We can’t help you to choose because we don’t have your telescope in our shop and there are literally thousands of models and “eras” of these telescopes. Even models that have been in continuous production for decades frequently change the mirror assembly design, so we don’t want to suggest a model that might not work. The good news is …. you have the telescope in-hand, so a few quick measurements is all it will take to find the perfect fit. Look below and you will see a link to a template that will help you find the perfect fit.

Sizing Template

Use this template to test for best fit. Simply print a copy and cut-out the template shapes and test fit. Take note of the portion of the heating element that is non-heated (1 1/8″ or 28mm). Also give consideration that the mirror collimation mechanism needs some room to move.

All models include easy electrical connectors and a neoprene wrap-around insulator which greatly enhances the performance of these heaters as it prevents the warmth generated by the heater from dissipating into the atmosphere.

The power draw is incredibly low using only 0.3amp or 4 watts at 100% Controller setting

This model is a simple strip-heater that can be mounted either horizontally or vertically. There are 3 sizes available.

PRODUCT DESCRIPTION

Swarovski ATX 65 Spotting Scope Technical Data

Clarity right up to the edge – SWAROVISION Field Flattener

This type of image definition has never been achieved before in any other spotting scope, thanks to the field flattener lenses creating a virtually flat image. Even the finest structures are reproduced with razor-sharp clarity right up to the edge with no need for constant refocusing.

The result: every detail is instantly captured, producing a perfect image without any distortions.

Maximum contrast – Including HD optics

A highly innovative optics design combined with fluoride- containing HD lenses minimise interfering colour fringing. This enables maximum
colour fidelity and leads to a significant improvement in resolution and contrast.

The result: an even more lifelike, contrast-rich image.

A complete view – Large field of view and high zoom range

Nothing escapes you. Thanks to their wide field of view, the ATX/STX spotting scopes provide you with a broader, more exciting platform for your viewing experience.

In spite of their high zoom range, the new generation of spotting scopes offers a large field of view. This allows you to achieve optimum magnification and detail recognition and also makes it extremely easy for you to search for and find objects, especially if they are in motion.

Eye relief plus – Large field of view even for spectacle wearers

SWAROVISION features a long eye relief and the removable twist-in eyecup is individually adjustable.

The result: even spectacle wearers can enjoy a large field of view, not to mention the inimitable edge sharpness. An additional eyecup has been specially developed for spectacle wearers to further increase viewing comfort.

Maximum colour fidelity – Optimised coatings

The enhanced lens and prism coatings (SWARODUR & SWAROTOP) give noticeably better colour reproduction combined with even greater transmission. SWAROCLEAN coatings on the outer lens surfaces create a non-stick effect, making it easier to clean.

The result: even more impressive observing experiences, even in low light.

Ingenious System

The new modular design offers previously unimagined flexibility and you are free to choose the perfect solution as the situation dictates. In collaboration with experts we have developed digiscoping adapters that open up a new realm of ways in which to observe and share the most beautiful moments.

Perfectly designed down to the smallest detail, you will be equipped for any situation.

Just one hand

When every second counts. Imagine a plover flitting over the shore one minute and taking off into the sky the next. The ATX/STX spotting scopes ensure that you are prepared for moments like this. This is because the new position of the zoom ring, which is now directly behind the focusing ring, makes it easier to handle. It means that you can zoom and focus with one hand, while steering the spotting scopes direction with the other.

This completely new ergonomic design offers a crucial benefit for digiscopers in particular. They can now use the camera quickly, easily and accurately with one hand, while the other concentrates on zoom and focus.

Easy to transport

Not a gram too heavy for top optical performance. Size and weight is the name of the game for all those who like to travel or spend long days in the field. The ATX/STX series means that bulky spotting scopes that are difficult to pack and heavy to carry are a thing of the past.

The modular design enables you to store the objective and eyepiece modules separately and the smaller dimensions also mean that you can easily and safely store individual modules in your luggage.

Swarovski ATX 30-70×95 Technical Data

Swarovski ATX 95 at a glance

There’s never been anything like it: a spotting scope with such outstanding detail resolution and up to 70x magnification. This even pushes optical tests to their limits. Despite the 95-mm objective lens, this is a slim spotting scope weighing in at just 2 kilograms.

In a nutshell, it ticks all the boxes for any birder wanting to discover an albatross gliding past an oceanic headland.

Clarity right up to the edge – SWAROVISION Field Flattener

This type of image definition has never been achieved before in any other spotting scope, thanks to the field flattener lenses creating a virtually flat image. Even the finest structures are reproduced with razor-sharp clarity right up to the edge with no need for constant refocusing.

The result: every detail is instantly captured, producing a perfect image without any distortions.

Maximum contrast – Including HD optics

A highly innovative optics design combined with fluoride- containing HD lenses minimise interfering colour fringing. This enables maximum
colour fidelity and leads to a significant improvement in resolution and contrast.

The result: an even more lifelike, contrast-rich image.

A complete view – Large field of view and high zoom range

Nothing escapes you. Thanks to their wide field of view, the ATX/STX spotting scopes provide you with a broader, more exciting platform for your viewing experience.

In spite of their high zoom range, the new generation of spotting scopes offers a large field of view. This allows you to achieve optimum magnification and detail recognition and also makes it extremely easy for you to search for and find objects, especially if they are in motion.

Eye relief plus – Large field of view even for spectacle wearers

SWAROVISION features a long eye relief and the removable twist-in eyecup is individually adjustable.

The result: even spectacle wearers can enjoy a large field of view, not to mention the inimitable edge sharpness. An additional eyecup has been specially developed for spectacle wearers to further increase viewing comfort.

Maximum colour fidelity – Optimised coatings

The enhanced lens and prism coatings (SWARODUR & SWAROTOP) give noticeably better colour reproduction combined with even greater transmission. SWAROCLEAN coatings on the outer lens surfaces create a non-stick effect, making it easier to clean.

The result: even more impressive observing experiences, even in low light.

Ingenious System

The new modular design offers previously unimagined flexibility and you are free to choose the perfect solution as the situation dictates. In collaboration with experts we have developed digiscoping adapters that open up a new realm of ways in which to observe and share the most beautiful moments.

Perfectly designed down to the smallest detail, you will be equipped for any situation.

Just one hand

When every second counts. Imagine a plover flitting over the shore one minute and taking off into the sky the next. The ATX/STX spotting scopes ensure that you are prepared for moments like this. This is because the new position of the zoom ring, which is now directly behind the focusing ring, makes it easier to handle. It means that you can zoom and focus with one hand, while steering the spotting scopes direction with the other.

This completely new ergonomic design offers a crucial benefit for digiscopers in particular. They can now use the camera quickly, easily and accurately with one hand, while the other concentrates on zoom and focus.

Easy to transport

Not a gram too heavy for top optical performance. Size and weight is the name of the game for all those who like to travel or spend long days in the field. The ATX/STX series means that bulky spotting scopes that are difficult to pack and heavy to carry are a thing of the past.

The modular design enables you to store the objective and eyepiece modules separately and the smaller dimensions also mean that you can easily and safely store individual modules in your luggage.

What accessories do I need to go with my telescope?

This is a question we get asked every day! We've put together some of our favourite accessories as the BINTEL Observer's Kit #1.

Included are:

BINTEL Plossl 32mm

Most telescopes come with at least one and sometime two eyepieces as standard. They usually offer a medium power around 25mm and a higher power 10mm. These are enough to get you started on your astro journey. While many beginners ask how to increase the magnification of their telescope with additional eyepieces, they often don't realise there's advantages to reducing the magnification with a longer focal length eyepiece.

Lower magnification brings a wider field of view. Some wonderful astro objects in the night sky such as large nebulae and star clusters might not fit into the eyepiece at higher magnifications. They'll need a wider view to see them in their fullest detail.

2x Barlow Lens with T-Adaptor

A Barlow lens effectively changes the focal length of each eyepiece. You insert the Barlow into your telescope and then your eyepiece into the Barlow. This doubles the magnification of each of your eyepieces. Your 10mm eyepiece becomes a 5mm, your 25mm a 12.5mm and so on. It's a quick and effective way of making your telescope more versatile.

This Celestron Barlow also had a T-Adaptor thread. If you have a DSLR camera, simply buy the matching low-cost T-ring for your camera body type (Nikon, Canon etc) here and this can be used to attach a DSLR to your telescope.

Celestron Night Vision Red Torch - RRP $29.95

Why do astronomers use red torches?

No matter the size of the telescope you're using, what's seen through the telescope will be faint. Luckily, our eyes get used to low light after spending a short time in the dark. It takes about 30-40 minutes for us to become "dark adapted". Our eyes are then some 10,000 to 1,000,000 more sensitive to light compared to when we're in full daylight.

(Needless to say, our eyes become less sensitive in the dark as we age and take longer to adapt.... )

This is something we're all used to seeing. At low light, our sight moves from full colour to black and white as different parts of our eyes become active. This dark adaption or night vision is especially important when observing at night. The problem is that even a short burst of white light from a car headlight, an outdoor light or a normal torch can "reset" dark adapted eyes and you need to start the entire process of adapting to the dark all over again.

It's easy to avoid the loss of night vision by using a low intensity red light. This Celestron Night Vision Red Torch lets you adjust your telescope, red maps and book or even attach cameras - all without losing your night vision. Many experienced astronomers will tell you their red lights are some their most used and handiest accessories in their observing toolkit!

Celestron Moon Filter RRP $19.95- yes, I wear my Sunglasses at Night

The Moon is bright enough to cast shadows! It's also sometimes overwhelmingly bright in a telescope eyepiece. The glare can make it uncomfortable to view.

A Moon filter simply reduces intensity to make the Moon easier to observe. With glare reduced, you'll also be able to pick out the finer details on the Lunar surface. This Celestron Moon Filter screws into the base of all 1.25" eyepieces.

Observer's Map of the Moon - RRP $19.95

This is a handy fold out, two-sided map of the Moon.

You can observe features with your telescope and locate them on the map or vice versa. This map also features a directory of all the key lunar regions with coordinates to find them.

On the reverse side of the map, there are close-up photos and information about the most exciting lunar regions to explore. You’ll also find images of the North and South polar regions for reference​. Refer to the lunar observing tips for practical information about using your telescope or binoculars to explore the Moon.

The Observer’s Map of the Moon is waterproof, tear-resistant, and can be folded into an 20cm x 10cm size, making it easy to take along on your next camping trip, star party, or evening in your backyard. When not in use, the Moon map will be a stylish decorative poster on your wall. It makes a great display for your classroom or astronomy club.

Losmandy Counterweight 11lb

Narrowband filter does not eliminate the effects of light pollution or increase the object’s brightness. In many cases, they increase the contrast between nebula and night sky, not brightening the nebula.

It can reduce the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).

Technical Parameter:

Name: ZWO New narrowband 1.25″ filter

Size: 1.25″

Thickness: 5.5mm+2.5mm(thread)

Glass thickness: 1.85mm

Thread: M28.5*0.6 male thread

The ZWO H-Alpha filter has a bandpass of 7nm and passes light at 656nm wavelength, light transmission rate comes up to 80%. Best choice of narrowband H-alpha astrophotography filter for high-contrast imaging and revealing rich details of the nebula even in areas with strong light pollution, just prepare to experience the infinite fun with it!

The ZWO narrowband S-II 7nm filter passes light at 672nm wavelength with a bandpass of 7nm which is designed for nebula observation. It is suitable for visual observation on most emission nebulae, planetary nebulae and supernova remnants, use it with H-alpha and OIII narrowband filters (SHO Set) for tricolor CCD astrophotography.

The ZWO narrowband O-III 7nm filter is designed for nebula observation allowing the 7nm bandwidth of light centered on a wavelength of 500nm through, which corresponds to OIII emission lines, blocking out all other light. Adding the ZWO O-III Narrowband filter to your imaging collection will help you go beyond the RGB imaging and will help capture your favourite nebulas in a totally new light, no matter how polluted your skies may be!

Technical Data

• FWHM：7±0.5nm
• Glass Thickness 2.0+/-0.03 mm (1.25”/31mm/36mm)
• Fine-optically polished to ensure accurate 1/4 wavefront over the both surfaces
• About 90% transmission at H-alpha line 656nm (H-Alpha filter )
• About 90% transmission at SII line 672nm (SII filter )
• About 90% transmission at major OIII line 500nm (OIII filter )
• Infrared wavelength 700-1100nm cut-off
• <0.1% transmission of off-band, OD3(Optical Density)

Transmission Curve

We made a test of our Ha Filters (ASI1600 mono camera, single frame, 300s, DDP in MaximDL) :

Optimally protecting your STM/STS spotting scope at all times: the close-fitting stay-on case protects the scope against impact without slipping or rubbing, even in demanding conditions.

Kendrick heater for Telrad finders.

Sky-Watcher Shutter Release Cables

The Sky-Watcher Shutter Release Cable allows you to connect your digital SLR camera to the Sky-Watcher Computerised Mount.

Why It’s Useful:

This cable allows your telescope mount to trigger camera exposures automatically—reducing vibration from manual pressing, streamlining long-exposure astrophotography, and simplifying timelapse workflows.

The Sky-Watcher Black Diamond 130/650 Photo Reflector OTA is a 130mm aperture Newtonian reflector with diffraction limited optics, all the light gathering power you need for visual use or astrophotography! Newtonian reflector telescopes are among the most cost effective design on the market, reaching much larger apertures than an equivalently priced refractor. The large aperture will help resolve faint, extended objects like nebulae and galaxies, whilst the 650mm focal length will reveal fine details of lunar craters.

The 130/650 Photo Reflector is equipped with an excellent Crayford dual speed focuser allowing fast, coarse regulation followed by a precise 10:1 reduction adjustment knob to reach the optimal focus. A 3 element 28mm LET eyepiece is provided, allowing 23x magnification and a 56° apparent field of view with 20mm of eye relief. The aluminised primary mirror is aspheric (parabolic profile) offering an optical system free from spherical aberration. The secondary mirror is thin to allow fast cooling and it is held by extra thin spider supports for minimal diffraction spike effects on bright stars and increased contrast.

In The Box:

• SkyWatcher Black Diamond 130/650 Photo Reflector OTA
• 28mm LET Eyepiece
• 6×30 Finder Scope
• 130mm Tube Rings
• Dovetail Bar

We offer secondary flat mirrors to match the complete telescope set request, our elliptic flat mirror has the same high optical quality of our parabolic primary mirrors. All mirrors have an enhance aluminum reflective coating, reflectivity is approximately 93%. The aluminum coating is protected by a properly applied protective coating (SiO2). Any custom made flat mirrors should be welcome!

Specifications:

ZWO Narrowband 7nm 36mm Filter Set

ZWO Narrowband 7nm 36mm filter set increases the contrast between nebula and night sky by helping to reduce the transmission of certain wavelengths of light, specifically, those produced by artificial light including mercury vapour, and both high and low-pressure sodium vapour lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).

Details

Name: ZWO Narrowband 7nm 36mm filter set

Size: 36mm

Thickness: 2mm

The ZWO narrowband H-Alpha filter has a bandpass of 7nm and passes light at 656nm wavelength, the light transmission rate comes up to 80%. Best choice of narrowband H-alpha astrophotography filter for high-contrast imaging and revealing rich details of the nebula even in areas with strong light pollution, just prepare to experience the infinite fun with it!

The ZWO narrowband S-II 7nm filter passes light at 672nm wavelength with a bandpass of 7nm which is designed for nebula observation. It is suitable for visual observation on most emission nebulae, planetary nebulae, and supernova remnants, use it with H-alpha and OIII narrowband filters (SHO Set) for tricolor CCD astrophotography.

The ZWO narrowband O-III 7nm filter is designed for nebula observation allowing the 7nm bandwidth of light centered on a wavelength of 500nm through, which corresponds to OIII emission lines, blocking out all other light. Adding the ZWO O-III Narrowband filter to your imaging collection will help you go beyond the RGB imaging and will help capture your favorite nebulae in a totally new light, no matter how polluted your skies may be!

Technical Data

• FWHM：7±0.5nm
• Fine-optically polished to ensure an accurate 1/4 wavefront over both surfaces
• About 90% transmission at H-alpha line 656nm (H-Alpha filter )
• About 90% transmission at SII line 672nm (SII filter )
• About 90% transmission at major OIII line 500nm (OIII filter )
• Infrared wavelength 700-1100nm cut-off
• <0.1% transmission of off-band, OD3(Optical Density)

Transmission Curve

SKU: ZWO-NB7nmD36

We offer secondary flat mirrors to match the complete telescope set request, our elliptic flat mirror has the same high optical quality of our parabolic primary mirrors. All mirrors have an enhance aluminum reflective coating, reflectivity is approximately 93%. The aluminum coating is protected by a properly applied protective coating (SiO2). Any custom made flat mirrors should be welcome!

Specifications:

We offer secondary flat mirrors to match the complete telescope set request, our elliptic flat mirror has the same high optical quality of our parabolic primary mirrors. All mirrors have an enhance aluminum reflective coating, reflectivity is approximately 93%. The aluminum coating is protected by a properly applied protective coating (SiO2). Any custom made flat mirrors should be welcome!

Specifications:

The Benro S4PRO Video Head is a compact fluid video head ideal for mirrorless and DSLR camera setups weighing up to 4kg.

Featuring a 60mm flat base with a 3/8"-16 threaded hole, it can be used with matching 60mm flat base tripods and tripods with flat base adapters. At the same time, thanks to the flat base, it can be mounted on sliders, jibs, monopods, and other support gear. It can efficiently be moved between such gear.

The Benro S4PRO Video Head is natively set at 1 step of counterbalance. At the push of a button on the side of the head, an additional step is added to total 2 steps. Next to that button is a release switch that takes you back to 1 step. There is no zero setting. The head features fixed pan and tilt drag and has independent pan and tilt locks. The tilt range is +90/-75°, and the pan range is a full 360°.

Some parts of the head are made of magnesium and other parts of aluminium. Virtually the entire head, including its knobs, is made of robust yet lightweight metal. A pan bar is included that can be attached to a rosette adapter on the left or right side of the head, for left- or right-handed users. A camera plate is included that can be adjusted forward/backward to let you find the optimal balance for your camera. A safety lock on the plate ensures that once mounted, the plate won't slip out if you move it in either direction too much. Two camera screws are supplied—1/4"-20 and 3/8"-16—that can be stored underneath the camera plate on the head itself, in dedicated slots. For attaching accessories, there's a 1/4"-20 threaded hole on each side of the head to which you can secure articulating arms.

We offer secondary flat mirrors to match the complete telescope set request, our elliptic flat mirror has the same high optical quality of our parabolic primary mirrors. All mirrors have an enhance aluminum reflective coating, reflectivity is approximately 93%. The aluminum coating is protected by a properly applied protective coating (SiO2). Any custom made flat mirrors should be welcome!

Specifications:

NOTE THIS IS THE PLUG for 2" accessories, eyepieces only

A simple plastic cover designed to keep dust out 2" accessories. This includes all standard barlows, diagonals, focusers, eyepieces, etc. Perfect to replace the factory plugs you may have misplaced since buying your telescope.

Use a dust cap to cover the front end of your eyepieces and barlows by capping it on top of the lens.

Use a dust plug to cover the back end of your accessories by plugging it inside the optical tube.

Farpoint Dew Shield - Meade 12 Inch SCT is a virtually indestructible cover customized for Meade 12 Inch SCT telescopes. Simply attach the flexible cover to the front of the optical tube to prevent moisture build-up on the lens. Made with tough, flexible ABS plastic and lined with black felt to cut down the reflection and prevent sliding onto the telescope corrector plate.

Protects delicate optical equipment and allows for moisture-free observing sessions.

When you are out on the field, make sure that your night-long set up is not interrupted by dew on your optics.

Farpoint Dew Shields and Dew Heaters are part of a perfect series of preventative measures you can take to make sure that your setup is prepared for the journey ahead. Our Shields are made with ABS polymer and proud to be made in USA.

The Sky‑Watcher C1 Shutter Release Cable is a dedicated electronic interface that lets you seamlessly connect compatible Canon EOS DSLR cameras—such as the 60D, 1000D, and 300D—to Sky‑Watcher computerized mounts, including the Star Adventurer, AllView, and Star Discovery. It features a 2.5 mm stereo plug compatible with the mount’s “snap” port and a Canon-specific E3-style remote socket on the camera end.

Key Features:

• Enables remote shutter control via your Sky‑Watcher mount—ideal for astrophotography and timelapse capture  .

• Compatible with Canon EOS cameras featuring the E3-type remote port, including:

  1000D, 300D, 350D, 400D, 450D, 500D, 550D, 600D, 650D, 700D, 60D/60Da, 70D, and similar models  .

• Works with Sky‑Watcher mounts offering a 2.5 mm stereo snap port—such as Star Adventurer, AllView, Star Discovery, and Virtuoso  .

• Coiled, flexible cable offers durability and convenience during extended setup and use sessions  .

Why It’s Useful:

This cable allows your telescope mount to trigger camera exposures automatically—reducing vibration from manual pressing, streamlining long-exposure astrophotography, and simplifying timelapse workflows.

Farpoint Dew Shield - Celestron 4/4SE SCT is a virtually indestructible cover customized for Celestron 4/4SE SCT telescopes. Simply attach the flexible cover to the front of the optical tube to prevent moisture build-up on the lens. Made with tough, flexible ABS plastic and lined with black felt to cut down the reflection and prevent sliding onto the telescope corrector plate.

Protects delicate optical equipment and allows for moisture-free observing sessions.

When you are out on the field, make sure that your night-long set up is not interrupted by dew on your optics.

Farpoint Dew Shields and Dew Heaters are part of a perfect series of preventative measures you can take to make sure that your setup is prepared for the journey ahead. Our Shields are made with ABS polymer and proud to be made in USA.

NOTE THIS IS THE CAP for 1.25" accessories, eyepieces only

A simple plastic cover designed to keep dust out 1.25" accessories. This includes all standard barlows, diagonals, focusers, eyepieces, etc. Perfect to replace the factory plugs you may have misplaced since buying your telescope.

Use a dust cap to cover the front end of your eyepieces and barlows by capping it on top of the lens.

Use a dust plug to cover the back end of your accessories by plugging it inside the optical tube.

NOTE THIS IS THE PLUG for 1.25" accessories, eyepieces only

A simple plastic cover designed to keep dust out of 1.25" accessories. This includes all standard barlows, diagonals, focusers, eyepieces, etc. Perfect to replace the factory plugs you may have misplaced since buying your telescope.

Use a dust cap to cover the front end of your eyepieces and barlows by capping it on top of the lens.

Use a dust plug to cover the back end of your accessories by plugging it inside the optical tube.

NOTE THIS IS THE CAP for 2" accessories, eyepieces only

A simple plastic cover designed to keep dust out 2" accessories. This includes all standard barlows, diagonals, focusers, eyepieces, etc. Perfect to replace the factory plugs you may have misplaced since buying your telescope.

Use a dust cap to cover the front end of your eyepieces and barlows by capping it on top of the lens.

Use a dust plug to cover the back end of your accessories by plugging it inside the optical tube.

The ZWO ASI533MM PRO adopts a Sony back-illuminated IMX533 sensor, which is a 1-inch square frame sensor made suitable for deep sky astrophotography needs. The ZWO ASI533MM Pro can be regarded as an upgrade of the ASI183 series. Not only does it retain the high-quality features of the ASI183, such as high QE and frame rate, but it also features: no amp glow, readout noise as low as 1.0e, pixel size of 3.76 μm, 3008 x3008 array (11.31mm x 11.31mm) array and a 2-stage TEC cooling. It is highly recommended for beginners of deep sky astrophotography.

1-inch Square Frame
The IMX533 is a 1-inch square frame CMOS image sensor with approximately 9M effective pixels at a pixel size of 3.76 μm. The 14-bit digital output of IMX533 makes it possible to read out signals of 9m effective pixels at a high speed of 20 frames per second with read noise as low as 1.0e, the performance of which is on par with those of SCMOS or EMCCD sensors. This sensor is suitable for image needs that require high definition and low noise.

Full Upgrade
The ZWO ASI533MM Pro is considered a full upgrade version of the ASI183 series.

Camera Curve

Quantum Efficiency

Based on ZWO’s calculation, the peak quantum efficiency of ASI533MM Pro is greater than 91%.

Zero Amp Glow

Traditional CMOS sensors can generate weak infrared light, which is equivalent to a light source during exposures. The ASI533MM Pro uses a no-glow circuitry to ensure best quality images regardless of gain or exposure length.

2 Stage TEC Cooling
The 2-stage thermoelectric can cool the CMOS sensor to 35 degrees below the ambient temperature (based on a 30 degree ambient temperature test results). Greatly reducing dark current and thereby improving the signal to noise ratio, even with a long expose of hundreds of seconds. Note: the lower the ambient temperature is, the smaller the Delta T is.

Dark Current

USB 3.0 & 256M DDR3 Memory
ASI533MM Pro is equipped with a USB 3.0 transmission interface. In 14-bit ADC mode, the output frame rate can reach 20 frames per second. Additionally, the 256M DDR3 memory ensures a more stable data transmission during long exposure without frame loss, and can also relax the hardware requirements of the computer used for data capture.

Appreciation Work

Connection Method

Connection to External Device

Structural Dimension Diagram

Specifications

The Luminos series eyepieces offer a wide 82º field of view in both high power and low power models, allowing you to make the most of your telescope, whether you own a short, fast refractor or a Celestron EdgeHD telescope. The optical set consists of six or seven elements (depending on the model) and is fully multi-coated for crisp, sharp views. All six Luminos eyepieces are parfocal, which means you can switch out eyepieces during observing sessions with little or no additional focusing required.

The Luminos eyepiece body is made of polished and anodized aluminum. A rubber grip runs around the equator of the eyepiece, giving you a secure grip and an easy method for raising and lowering the retractable eyecup. Simply twist the rubber grip to adjust the height of the eyecup. The insert barrel is threaded to accept filters.

Offers a very wide field-of-view, with pinpoint edge-of-field sharpness. These latest advancements offer a fully multi-coated optical design with premium-grade, exotic optical glass for the best possible image correction in color and brightness. The blackened lens edges provide enhanced contrast and help to reduce reflections while the parfocal design delivers little-to-no focus change when switching between eyepieces. With a generous eye relief, enjoy a comfortable observing experience. UHD eyepieces deliver a 40% improvement in corrections for chromatic aberration and edge distortions over traditional Plössls.

With a waterproof design, UHD eyepieces will guard against fog and outdoor atmospheric elements. Has blackened edges and is parfocal. Observe your favorite celestial objects in a new and improved view.

Offers a very wide field-of-view, with pinpoint edge-of-field sharpness. These latest advancements offer a fully multi-coated optical design with premium-grade, exotic optical glass for the best possible image correction in color and brightness. The blackened lens edges provide enhanced contrast and help to reduce reflections while the parfocal design delivers little-to-no focus change when switching between eyepieces. With a generous eye relief, enjoy a comfortable observing experience. UHD eyepieces deliver a 40% improvement in corrections for chromatic aberration and edge distortions over traditional Plössls.

With a waterproof design, UHD eyepieces will guard against fog and outdoor atmospheric elements. Has blackened edges and is parfocal. Observe your favorite celestial objects in a new and improved view.