The hand unit has two switch-adjustable slow speeds which normally ramp up to a fast speed after two seconds.

Placing the slow-speed switch between the two normal positions (high and low) will cause the speed selection to be overridden and the motor will run at very fast speed (5) at all times.

Suits all JMI MotoFocuser , Meade #1209 Zero Image Shift Micro Focuser and others.

A reducer has the optical property of decreasing the effective focal length of a telescope. This results in a wider-field and faster imaging time on nebulae and galaxies. Model NPR-2073 0.8x Reducer for NP Scopes is specifically designed to be used with the NP127is and NP101is. While it can also be used to enlarge the field of other Tele Vue Petzval type telescopes, it will not provide additional correction for those models.

This reducer was designed to minimize vignetting with camera sensors up to 43mm diagonal (Full Frame) and is a replacement for the previous 0.8x reducer, the NPR-1073, which worked best up to APS-C sensors. When combined with a Tele Vue Petzval type telescope, it reduces the focal length of the telescope by 20% and makes it that much faster. This increases the telescope's field of view by 25%.

For use on other Tele Vue Petzval model telescopes with 2-inch focusers, use the RAD-1074 Imaging System Nosepiece for 2" Focuser instead of the I.S. Imaging Adapter. Note that when used with 2" focusers there will be increased vignetting for full frame sensors because of the inner diameter of the 2-inch barrel.

This reducer requires the Imaging System insert to attach to the drawtube and Imaging System rings to attach to your accessories and camera.

SKU: NPR-2073

iOptron CEM120

The All NEW iOptron CEM120

An extraordinary innovation in mount design...Now with a new payload!

Recognizing the growing demand for an accurate and stable, equatorial mount with the versatility to carry larger instruments and more complex imaging arrays, we created the iOptron CEM120. It offers the benefits of our revolutionary “center balance” design: stability, accuracy, and smooth mechanical operation, while capable of carrying a payload up to 52 kg. The “center balance” design’s natural stability is due to its focusing the mount along with payloads weight directly over the center of the pier or tripod.

The CEM120's performance is demonstrated by its low periodic tracking error of ±3.5 arc seconds. Along with the stability aspect, the CEM120 features an advanced cable management system consisting of more ports in more locations preventing tangle ups and reducing the chance of fractured cables. It also adds some new features to the CEM family like Wi-Fi and LAN for remote operation and easy to use, reliable clutches on both axes.

Optional Extra's

Optional heavy duty Tri-Pier 360 and Permanent Pier are available for order.

/product/ioptron-tri-pier-360

Optional Tri-Pier adapter for light weight payload ( 8036-120) is also available for $239. It can be modified for permanent pier mounting.

Features

• A new design, center-balanced equatorial mount (CEM) for maximum payload with natural stability
• Observatory astrophotography mount ideal for both visual and Astro-photographers
• Payload of 52 kg with the mount weight of 26 kg
• Easy to use and reliable gear clutches
• Precision altitude and azimuth adjustment.
• Precision stepper motor with 0.07 arcsec accuracy for precise GOTO and accurate tracking
• Polar alignment routine for those who can't see the Pole Star
• Go2Nova® 8407 V2 controller with Advanced GOTONOVA® GOTO Technology with built in heater
• High precision tracking with low periodic error (PE)<±3.5 arcsec
• Permanent periodic error correction (PPEC)
• 32-channel Global Positioning System (GPS)
• Built-in WiFi and LAN for remote operation
• Integrated ST-4 autoguiding port
• Advanced cable management system with more choices
• Spring loaded, individual adjustable Losmandy saddle

Supplied with an American power supply from factory

Specifications

Manuals and Instructions

Quick Start Guide

Instruction Manual

AUX port plug (DIN-422) assembly

Latest Firmware

SKU: 7300

CDK20’s Key Features

Large Aperture and Moderate Focal Ratio

The CDK20 f/6.8 features a significant 508 mm aperture and an f/6.8 focal ratio. This combination provides excellent light-gathering capabilities and a wide field of view, enhancing its ability to capture detailed images of deep-sky objects for astrophotography and research purposes.

Advanced Optical Design

Equipped with a state-of-the-art Corrected Dall-Kirkham optical system, the CDK20 offers unmatched image clarity. It eliminates off-axis coma and astigmatism and provides a perfectly flat field, ensuring images are crisp and detailed across the entire field of view, requiring minimal post-processing.

Robust Mechanical Structure

Built with a carbon fiber optical tube, the CDK20 is both durable and lightweight. Its design minimizes thermal expansion, ensuring minimal focus shift with temperature changes, which is ideal for extended observing sessions under diverse environmental conditions.

High-Performance Mirrors and Coatings

Utilizing fused silica mirrors, the CDK20 maintains precise optical alignment and exceptional surface accuracy, even during temperature fluctuations. The high-quality coatings improve light transmission and reduce stray light, optimizing the telescope's performance for specialized observational tasks.

Thermal Management

The CDK20 has cooling fans and a Delta-T ready system to achieve thermal equilibrium swiftly. These features help reduce air turbulence within the tube, thus minimizing image distortion and maintaining consistent imaging quality.

Integrated Dew Control

The telescope includes advanced dew prevention technology with heater pads controlled by PlaneWave’s software. This ensures optical surfaces remain free from condensation in humid conditions, thus maintaining clear and consistent imaging performance.

Application-Specific Benefits

Astrophotography

With its large image circle and exceptional field flatness, the CDK20 allows astrophotographers to capture expansive and breathtaking views of the cosmos with incredible detail and clarity.

Astronomy Research

The stable and precise imaging capabilities of the CDK20 make it an invaluable asset for academic institutions and observatories engaged in sophisticated astronomical research, including deep-sky surveys and detailed photometric studies.

Visual Observations

The CDK20 excels in visual observation, providing bright and clear views ideal for star parties and serious visual astronomy. Its large aperture and superior optical quality deliver stunning views of planetary, lunar, and deep-sky objects, making every viewing session a memorable experience. Here's the updated article adapted for the CDK17 based on the features and specifications from the provided product page:

Space Situational Awareness (SSA) and Space Domain Awareness (SDA)

The CDK20 also lends itself to Space Situational Awareness and Space Domain Awareness applications. Its capability to provide detailed observations can be essential for tracking and monitoring satellites and other space debris, contributing valuable data for space traffic management and safety initiatives.

Optical Systems

Secondary Mirror

Lens Group

Primary Mirror

Specifications

• CCD type: ICX825AL Sony ExView II interline CCD with ultra low dark current and vertical anti-blooming.
• CCD Full resolution pixel data: Pixel size: 6.45uM x 6.45uM, Image format: 1392 x 1040 pixels
• CCD Image area: 8.98mm (Horizontal) x 6.71mm (Vertical).
• CCD quality: Grade 1
• Spectral Response: QE max at 580nM (~75%), 50% at 400nM and 770nM.
• Readout Noise: Typically ONLY 3.5 electrons.
• Full-well capacity: Greater than 23,000 e- (unbinned)
• Anti-blooming: Overload margin greater than 1000x.
• Dark current: Less than 0.1 electrons/second @ + 10C ambient.
• Data format: 16 bits.
• System gain: 0.3 electrons per ADU
• Lens details: 1.55mm FL F/2 180 degree ‘Fish Eye’
• Computer Interface: Built-in USB 2.0 compatible interface.
• Image download time: Typically 0.6 seconds at full resolution using USB 2.0.
• Power requirements: Camera & Dew Heater requires 12v at 1.5 amp max.
• Input connection: ‘Mini B’ USB socket for USB2.0 and a 2.1mm jack for +12v heater supply. Cooling system: Ambient air cooling.
• Viewing dome: High quality polycarbonate hemisphere (replaceable)
• Overall size: 150mm tall x 95mm diameter

PRODUCT MANUAL Handbook-for-the-Oculus-PRO_Iss3

• Rigid steel tube leg tripod with eyepiece tray – suits CQ350 mount heads
• Sky-Watcher / Synta sturdy steel extendable tube leg tripod
• Includes locking centre bolt with eyepiece tray.

PRODUCT DESCRIPTION

ZWO Ha 7nm filter 2in 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).

The ZWO Ha 7nm Filter 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!

Technical Data

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

Transmission Curve

The Enhanced Aluminum mirror coating provides a 96% reflective surface across all but the extreme ends of the visual spectrum. The enhanced coating provides extra reflectance versus competing standard aluminum coatings. The final coating stage applies a tough overcoat to protect the aluminum. The diagonal body has the same features as the Everbrite. All diagonals feature brass clamp rings and filter threads. The Enhanced Aluminum diagonals are good budget alternatives, especially where a prism diagonal might otherwise be considered.

Engineered to withstand

Engineered for resilience, the KITE APC 50 binoculars feature an IPX 7 waterproof rating, sealed electronics, and nitrogen gas filling. These binoculars can withstand submersion up to 1 meter and thrive in the most humid regions on Earth, delivering unmatched performance in challenging conditions.

KDGS-2

In 2024, KITE OPTICS unveils the second generation of the KDGS, propelling KITE OPTICS’ image stabilization performance to an unprecedented level. A new era dawns once more!

KT 3.0 PROCESSOR EN SOFTWARE

With the APC 50, you’ll encounter an unmatched level of immersion, feeling as though you’re right there with the object you’re observing. Thanks to the increased precision of KITE OPTICS takes a significant leap forward in advancing its software.KT 3.0 delivers a unique viewing experience that mirrors the cognitive and visual patterns of the mind, effectively making the sensation of looking through binoculars vanish.

ED/HD OPTICAL SYSTEM

Experience unparalleled contrast with the APC 50, featuring an ED/HD optical system. Witness a stabilized image where chromatic aberration is effectively minimized, ensuring that every view is razor sharp and true to life. The APC 50 is your portal to a stable and distortion-free viewing experience, where precision meets perfection.

KITE MHR ADVANCE+ COATING SYSTEM

The APC binocular’s optical system, equipped with ED lenses and treated with KITE OPTICS’ MHR Advance+ coatings, achieves a remarkable 86% light transmission. Combined with ‘Enhanced Brightness Perception by Stability", this optical masterpiece excels in low-light conditions, delivering unparalleled clarity, vividness, and precision

FULL SEASON ON 1 CHARGE

Experience unrivaled endurance with the APC 50 binoculars, boasting an impressive battery life up to 38 hours. What truly sets it apart is the ingenious APC mode, which extends its operation to cover an entire season on a single charge on average use. Unleash the power of the APC 50 and enjoy uninterrupted viewing year-round

APC POWER SAVING MODE

No need for buttons or worries. With our APC, your device seamlessly transitions into sleep mode when you’re not actively observing and springs to life when you need it, all without pressing a single button. Enjoy uninterrupted, hassle-free viewing at your fingertips.

WIDE ANGLE VIEW

The APC 18×50, boasting an enormous 61°, complies with ISO standards for wide-angle view binoculars, solidifying its status as an authentic wide-field binocular. Step into a broader, more immersive world with the APC 18×50.

For the last four hundred years, women have played a part far in excess of their numerical representation in the history of astronomical research and discovery. It was a woman who gave us our first tool for measuring the distances between stars, and another who told us for the first time what those stars were made of. It was women who first noticed the rhythmic noise of a pulsar, the temperature discrepancy that announced the existence of white dwarf stars, and the irregularities in galactic motion that informed us that the universe we see might be only a small part of the universe that exists.

And yet, in spite of the magnitude of their achievements, for centuries women were treated as essentially second class citizens within the astronomical community, contained in back rooms, forbidden from communicating with their male colleagues, provided with repetitive and menial tasks, and paid starvation wages. This book tells the tale of how, in spite of all those impediments, women managed, by sheer determination and genius, to unlock the secrets of the night sky. It is the story of some of science's most hallowed names - Maria Mitchell, Caroline Herschel, Vera Rubin, Nancy Grace Roman, and Jocelyn Bell-Burnell - and also the story of scientists whose accomplishments were great, but whose names have faded through lack of use - Queen Seondeok of Korea, who built an observatory in the 7th century that still stands today, Wang Zhenyi, who brought heliocentrism to China, Margaret Huggins, who perfected the techniques that allowed us to photograph stellar spectra and thereby completely changed the direction of modern astronomy, and Hisako Koyama, whose multi-decade study of the sun's surface is as impressive a feat of steadfast scientific dedication as it is a rigorous and valuable treasure trove of solar data.

A History of Women in Astronomy and Space Exploration is not only a book, however, of those who study space, but of those who have ventured into it, from the fabled Mercury 13, whose attempt to join the American space program was ultimately foiled by betrayal from within, to mythical figures like Kathryn Sullivan and Sally Ride, who were not only pioneering space explorers, but scientific researchers and engineers in their own rights, aided in their work by scientists like Mamta Patel Nagaraja, who studied the effects of space upon the human body, and computer programmers like Marianne Dyson, whose simulations prepared astronauts for every possible catastrophe that can occur in space.

Told through over 130 stories spanning four thousand years of humanity's attempt to understand its place in the cosmos, A History of Women in Astronomy and Space Exploration brings us at last the full tale of women's evolution from instrument makers and calculators to the theorists, administrators, and explorers who have, while receiving astonishingly little in return, given us, quite literally, the universe.

The 12v ports are 2.5mm. We offer 2 x 2.5mm - 2.1 mm converters with this unit. Please contact the store if you need them.

With this advanced power station, you can keep your devices powered and charged when you don’t have access to mains power. This makes it ideal to take camping, to your picnic, on a boat, or to use at home in the event of a power blackout. A built-in 300W pure sine wave inverter enables you to power 240V devices like laptops, small power tools, and other mains powered devices. The cigarette lighter socket and two DC sockets provide 12VDC to power a 12V fridge/freezer, fan, CB radio, air compressor, 12V lights, etc. Charge your smartphone, tablet and other USB devices simultaneously via the four USB ports, which include 2 x USB-A, USB-A with Quick Charge™ 3.0, and Type-C with 55W Power Delivery for a faster charge. A wireless Qi charger built into the top of the power station provides up to 10W fast charge to compatible devices. An ultra bright 1W LED light means you won’t be left in the dark, large colour LCD screen shows you the power status at a glance, and a fold-out carry handle makes it easy to carry. A mains charger is included to charge the high-capacity Li-ion batteries. Al-ternatively, a DC input with an integrated high-performance MPPT charge controller enables you to charge the power station with a solar panel (not included).

High Capacity Li-ion Battery
2x 12V, 2x USB- A, 1x QC3.0, 1x 10W Wireless Charger and 1x USB-C Outputs
Charge multiple devices at once
Convenient wireless charger on top for mobile devices
Bright LED Light
Bright LCD Screen

Specifications

Battery Type

MB3774: 14.8V/20.4Ah 300Wh Li-ion Batteries

Charging

18V-21V Solar panel (not included)
12v Cigarette socket (not included)
19V 4A Adapter

Outputs

2 x DC12V (7A Max) (2.5mm)
2 x USB-A (2A Max)
1 x QC3.0 (2A Max)
1 x USB-C (55W)
1 x Wireless Qi charger (10W)
1 x Pure Sinewave Inverter (500W continuous, 1000W peak)
Charger Controller: MPPT 4A
LED: 1W
Dimensions: 225(W) x 170(H) x 150(W)mm
Weight: MB3774: 4kg

Includes Edison Screw 5w 4000K LED light & 2.9m cable w/switch, 1.5m Cigarette-socket charging cord, and 19v 4A mains power charger w/1.2m IEC C7 cable.

Help protect your Kite Optics APC image stabilizing binoculars with this silicon jacket.

New from ZWO. The ZWO SONY NEX adapter can be used to connect Sony NEX lens and ASI cameras with small sensor formats, such as ASI1600, ASI294, ASI183, ASI174, ASI432 and ASI585.

Only support manual lenses supported, not compatible with automatic lenses.

Suits cooled and uncooled ZWO cameras.

Connecting ZWO SONY NEX to your ZWO Uncooled Camera

Connecting ZWO SONY NEX to your ZWO Cooled Camera

ZWO SONY NEX Schematic Drawing

SKU: ZWO-SONY-NEX

Protects your binoculars from rain and snow. Its silent handling along with the pocket for your personal ballistic data and/or a SWAROVSKI OPTIK moist cleaning cloth guarantee you have all you need at the crucial moment. Suitable for all new NL Pure, EL and EL Range.

The QHY294 Pro is a 4/3-inch back-illuminated camera, equipped with Sony IMX294 (Color) and IMX 492 (Mono) sensor. The 294 Pro has 11.7 MP at 4.63um, 14-bits A/D. The IMX294 and IMX492 chips have 46.8 million 2.315um pixels, which Sony 2×2 bins on-chip to create the sensor’s advertised 11.7 million 4.63um pixel array. The QHY294 Pro series camera is capable of locking and unlocking the on-chip binning to provide two readout modes. The first mode reads the sensor “locked” mode to produce 11.6mp images with 4.63um pixel size and 14 bits per pixel. The second read mode unlocks the binning to produce 46.8mp images with 2.315um pixel size at 12 bits per pixel.

The QHY294 Pro CMOS sensor has a dual gain mode, HGC (high gain) and LGC (Low gain). The QHY294 Pro will switch the two modes automatically when the gain is set to 1600 you will get the benefits of the ultra low read noise (1e- to 1.6e-) of the HGC mode and a full well capacity of about 14.5ke- at the switch point setting.

COMPACT LIGHTNESS

Ideal for rough terrain and remote areas. Its light weight and compact dimensions make the ATC the ideal companion on all your tours.

IMPRESSIVE VERSATILITY

Thought out in the minutest detail, the compact spotting scope impresses with its intuitive operation.
The removable half shell on the bottom allows easier positioning on a surface and unimpeded turning of the focusing wheel at all times. To capture special moments, the VPA allows you to quickly connect the ATC to your smartphone.

OVERWHELMING FASCINATION

Discover the SWAROVISION spotting scope range. The ATC impresses with spectacular colour intensity and razor-sharp images. SWAROVISION technology allows you to experience crucial details with optical perfection.

Swarovski ATC 17-40 x 56 Technical Data

The Tele Vue 2”-1¼” Adapter - Satin, HiHat adapter is specially designed with a high rise head to keep Tele Vue Barlows and Powermate™ amplifiers away from the diagonal mirror. Has a Satin finish.

LEICA TRINOVID BCA

The right companion for ambitious users

Best resolving power and small size fit for any kind of use

The Trinovid BCA models are the most versatile of all compact binoculars. Their high-quality optics provide great resolving power in a small size, making them the perfect companion for various occasions.

Built for outstanding colour fidelity and high-contrast viewing

Leica’s innovative High Durability Coating® (HDC®) is an abrasion-resistant and transmission enhancing multi-coating, guaranteeing superior light transmission and outstanding colour fidelity.

Brilliant performance in any situation

Inspired by the powerful Trinovid series, these compact binoculars are the perfect companion wherever you go. Their robust, water-resistant construction and low weight make them ideal for outdoor activities.

Technical Specs

• Delivery scope: Carrying cord, Cordular case with belt loop
•  Magnification: 10x
• Front lens diameter: 25mm
• Exit pupil: 2.5mm
• Twilight factor: 15.8
•  Field of view at 1,000m: 90m

The perfect case for the objective module of your ATX/STX 65mm spotting scope. The close-fitting stay-on case protects the scope against impact even in demanding conditions.

Tele Vue Imaging System Adapter - 2 Inch to 2.4 Inch

2.4" Adapter for 2" Accessories is another key component that expands the usability of your existing 2" accessories. The adapter allows any 2” accessory to connect to the Imaging System. This includes cameras and filter wheels with 2" nosepieces. This adapter includes dual thumb-screws and non-marring brass clamp ring.

The 2.4 inch imaging system connection is found on the Tele Vue NP-101is and Tele Vue NP-127is APO refractors.

Tele Vue Equalizer 2 Inch - 1.25 Inch Adapter

Equalizer model

A heavy solid bronze version called the "Equalizer" adds 12-ounces to help equalize the weight when switching from heavy 2" eyepieces to light 1¼" eyepieces. Features exclusive anti-reflection angle that prevents reflection back to the objective.

• Positioning Accuracy up to 1 arc minute. Accuracy enhanced by software collimation error (mount mechanical error) compensation
• Stepper motors with 1.8° step angle and 32 micro steps driven
• Slewing speed up to 3.4°/sec (800X)
• Guiding speed selectable from 0.25X, 0.50X, 0.75X, or 1X
• Object database containing complete Messier, NGC, and IC catalogues
• Periodic Error Correction
• PC compatibility
• 5 Years Sky-Watcher Limited Warranty

Sky-Watcher EQ5 Pro GOTO Mount

The Sky-Watcher EQ5 Pro GOTO Mount is an EQ5 mount equipped with GoTo capabilities. It has the same type of computerized features found on the heavier HEQ5 and EQ6 Pro mounts. It includes the proprietary SynScan GoTo system; the massive database of celestial object locations and automated alignment functions.

Accurate Automated Slewing
Software and hardware work together to produce the most precise movements possible. Precision crafted gears and motor drive are controlled by the software functions on board the hand controller. The software has built-in error correction to compensate for gears wearing out and other internal factors that affect accuracy.

Enhanced Stargazing Experience
Once the mount is assembled, you only need to complete the alignment process to start viewing. Automatically point your telescope to the different celestial objects stored in the database at the touch of a button. The user-friendly menu allows even the novice users to access the different features of the system. The upgrades lets you spend more time viewing and less time searching for your chosen celestial objects.

Instruction Manual

Losmandy Polar Scope

Polar Scope Finder. For GM 8, G-9 and G-11 mounts and the StarLapse system.

Works in Northern or Southern Hemispheres. Direct reading. No calculations needed.

Rotate polar scope and adjust alta-azimuth knobs. Includes self-contained, battery operated variable LED illuminator.

Zoom Eyepiece for Pentax spotting scopes and astronomical telescopes with standard, 1.25" focusers.

The SMC 8-24mm Zoom Eyepiece fits all Pentax spotting scopes for terrestrial viewing.

It offers generous 18-22mm eye relief for comfortable viewing and an apparent angle of view as wide as 60°.

Built to Japanese Industrial Standards Class 4, it is weather resistant.

Apparent angle of view 38-60°

Magnification:

• 26-78x with 100mm scope
• 21-63x/20-60x/20-61x with 80mm scopes
• 16-46x/16-48x with 65mm scopes

The Pentax PF-80ED-A Spotting Scope is a large and impressive optical performer, with a brilliant 80mm objective lens and the ability to accept any 1.25" astronomy eyepiece as well as 82mm filters at the front of the objective. It is 100% waterproof and fogproof, with durable rubber armor over an all-metal housing that's got a rotating tripod collar with click stops every 45°. The fully multicoated optics feature Pentax's well-regarded SMC multicoating process, and an element of ED (extra-low dispersion) glass helps provide razor-sharp edge delineation to high-contrast subjects.

The PF-80ED-A's 1.25 diameter eyepiece specification allows less compacting of the light shaft produced by the objective lens, and thus a larger final image with superior depth perception. Any great 1.25" eyepiece can be used, from Pentax themselves to elite telescope manufacturers' eyepieces such as Meade, Celestron, Vixen, and of course Tele Vue. The PF-80ED has a focal length of 518mm.

Please note this spotting scope does not come standard with an eyepiece. A good suggestion would be:

The PF-80ED-A is amongst the very short list of premium spotting scopes that includes a view-through case as standard equipment.

• A superb large-class spotting scope with 45° angled viewing
• JIS Class 6 100% waterproof and fogproof construction
• Pentax's SMC multicoatings applied to every optical surface
• An ED glass element to provide ideal color correction and contrast
• Accepts 1.25" astronomy eyepieces
• Rotating tripod collar with click stops
• Retractable hood shields the objective from stray light or moisture
• Accepts 82mm filters