• 7-21mm zoom eyepiece; allows you to change magnification power without swapping out eyepieces; suitable for viewing the lunar surface; planets; nebulae; star clusters;
• 5-elements 3-groups lens structure; 5-elements 3-groups made of high index glass deliver sharp; high contrast vistas; get bright and true image colors;
• 52°-36° field of view; SV135 zoom eyepiece allows you to see different wide field of view under the same viewing conditions;
• 13mm-14mm eye relief; with rubber eyecup; provides comfortable long term viewing for people with or without glasses;
• Standard 1.25-inch interface; compatible with 1.25-inch telescopes and filter accessories; groove anti-drop design; effectively prevents accidental falling during use.

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Zoom Eyepiece eliminates the need to change eyepieces so you can spend more time viewing the night sky instead of fumbling in the dark when you want higher or lower magnifications.

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• 7-21 zoom eyepiece; allows you to change magnification power without swapping out eyepieces; bring you a better observation experience in a comfortable situation with high-contrast imaging; designed primarily for viewing lunar surfaces; jupiter and saturn; nebulae; clusters; and diffuse nebulae;
• 7-Elements/4-groups structure; made of high index glass deliver sharp, high contrast vistas;
• A simple twist of the zoom eyepiece housing changes the focal length from 7mm to 21mm, providing a variety of viewing magnification powers;
• 15mm long eye relief; ensure relaxing observation and keep your eyes comfortable, especially for users who wear glasses; the rubber eye guard provides comfort and blocks unwanted stray light;
• M28.5*0.6 standard thread; convenient for connecting filter; compatible with 1.25-inch telescopes and accessories; works great for photography.

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Svbony 34mm super-wide 2inch telescope eyepiece for astronomic telescope, suitable for watching the scenery, bright celestial observations, nebula, and so on.

• Dielectric coatings; super flat mirror with dielectric coatings to reduce reflected light loss; provide an over 99% reflective surface; good for astronomical viewing;
• The 1.25-inch nosepiece fits 1.25-inch telescopes and accepts standard 1.25-inch filters, eyepieces, Barlow lenses, and similar accessories; The 2-inch nosepiece is compatible with 2-inch telescopes and accommodates standard 2-inch filters and accessories. You can choose either 1.25inch or 2inch diagonal based on your requirements;
• 90 degree viewing angle; diagonal reflects the telescope’s light path 90 degree to provide a more comfortable viewing angle; best for observing objects overhead;
• Correct upside down and left right reversed image; the view image is upright; but left and right reversed if use the 90 degrees to your telescope;
• Brass compression ring; Built in brass ring and thumbscrew accessories avoid eyepiece to rotate during adjustments; effortless fixes more firmly and will not scratch your eyepieces barrels.

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• IMX585 CMOS Color Sensor: Delivers up to 45 fps with extremely low readout noise and increases sensitivity by approximately 1.7 times compared to the IMX485;
• Back-illuminated Sensor: The full well charge reaches 38ke, with a peak quantum efficiency of about 90%;
• 1/1.2-inch Frame: Captures rich celestial details;
• Near-Infrared Sensitivity: Significantly improves near-infrared shooting efficiency, capturing more details of celestial objects with the same exposure time;
• Dual-Gain HDR: Retains a very high dynamic range at high gain, greatly reducing read noise.

Note:Suitable for planetary imaging, EAA (Electronically Assisted Astronomy), and nebula imaging.

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Guide for SV705C Connecting with 2inch Field Flattener

• Firm locking; SV223 diagonal mirror has a clicklock locking mechanism; just turn the clicklock to securely fix the accessory; ensuring the eyepiece is installed and used stably; not easy to fall off
• Coating: 99% Reflectivity SV223 diagonal mirror has metal high reflective dielectric coating
• Surface accuracy: 1/10λ
• High-quality machining out of the aluminum; SV223 star diagonal is composed of High-quality aluminum elements; chic; light and stable; internal antireflection baffling for highest contrast
• 90 degrees design; SV223 star diagonal has a 90 degrees refraction angle; providing a better observation experience when visually observing.

SV223 vs Baader: Watch Now!

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Buy SV405CC Cooled Color Camera Get SV220 Dual-Band Filter 7nm 1.25 inches For Free

The product corresponding to the SKU is as follows:

• SA401 25-75X100 APO Spotting Scope, SKU: F9375B
• SC311 WIFI Camera IMX662 , SKU: F9384A
• SC001 Wifi Camera, SKU: F9373A 
• SA406 1.25inch adapter, SKU: W9170A
• SA402 Travel Tripod, SKU: W9159A 

Note: SA401 comes with an eyepiece

Reviews of SA401-SC311

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• 50mm Aperture; SV198 is convenient for astronomers to find a target in the sky, by improving light-gathering capability, resolution, contrast, and overall usability;
• Position Clamp Screw; The 3 screws on the clamping ring ensure stable, shake-free equipment, easy angle fine-tuning, making it perfect for astronomy and photography;
• 12mm Fine Focusing; Guide scope with a millimeter scale and 12mm focal path enhances the overall effectiveness and accuracy of astronomical observations by providing clearer images, accurate targeting, and improved optical quality; 
• 45mm T2-Extension Tube; Design with thread M42*0.75; eliminates a range of focusing problems;Tube rings with Vixen compatible dovetail;
• Wide Compatibility; With an extension tube, the SV198 guide scope is compatible with SV905C guide cameras, as well as a star finder when adding to an standard eyepiece. 

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• 8x50 finder scope; 50mm large objective lens enables more light to enter; providing a bright image; making it easy to aim anywhere in the sky; a large field of view of 7.3 degrees;
• Erect image and humanized design; built-in BK7 correct-image roof prism ensures right-side-up; left-to-right correct views; which is in line with the basic observation habits of people;
• Dark field illumination function; under extremely dark observation conditions; the red LED illuminator can illuminate the reticle; assist observation and facilitate finding the target;
• Glass reticle; the glass reticle has higher seismic stability; high precision and long service life; at the same time effectively avoids the problem of the cross line blocking the target;
• Objective lens thread focus and reticle parallax compensation adjustment; ensure the target and the reticle are in the same focal plane; angle adjustment control knob can adjust the reticle and observation angle.

• The SC311 is designed with Sony IMX662 color CMOS sensor, which uses advanced STARVIS 2 technology. It has the characteristics of no amp glow and very low readout noise, higher sensitivity to red and near infrared(NIR) light；
• 2.4G WiFi technology let you can use 4 devices at the same time and share the fun of astronomy with your friends. Support Android and Apple systems, you can download them in the software store；
• 10M effective transmission sensing distance allows you to get rid of the shackles of the data cable, it is easier to realize the fun of astronomy observation outdoors；
• Built-in 2400mah lithium battery, it can support about 4 hours of continuous work, allowing you to have more time to focus on observations；
• Connect to our SvbonyAstro a software application designed by ourselves. You can do observation on your phone or pad and save them to the SC311 built-in TF card, and then easily share to social media.
• The SC311 camera can be connected via USB cable to a PC. You can use this camera to capture with the AstroDMx Capture program or etc. Also it complies with the standard UVC protocol and no need to install SVBONY driver.  

Reviews of SC311

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• Versatile 60mm aperture Guide Scope with a built-in helical focuser for precise focusing of potential guide stars; will help guide you to capturing higher quality astrophotos;an ideal addition to any astrophotographers collection of gear;
• The helical focuser simply moves the attached device inwards or outwards while maintaining its orientation;this convenient feature means your field of potential guide stars will not rotate as focus is adjusted, further increasing ease of use;
• For those nights when you don't plan to capture astrophotos exposures, this versatile Guide Scope can double as a straight-through finder scope with an optional 1.25" eyepiece installed;
• The focuser boasts 8 mm of precise helical focus travel;plus telescoping drawtube housing provides up to 35mm of additional back-travel if needed for your particular autoguider device; No extension tubes necessary; a compression ring fitting keeps any inserted autoguider cameras or eyepieces free of pesky scratches;
• The Multi-Use Guide Scope with Helical Focuser also features male T-threads on the focuser collar for secure threaded attachment of guide cameras equipped with female T-threads.

Note: The SV106 can connect directly to an eyepiece (8mm or longer) for imaging, resulting in an inverted image. This setup enables deep-sky observation without a fixed reference. However, adding a zenith mirror increases the weight of the star guide and will not achieve focus. 

• 50mm Guide scope will help guide you to capturing higher quality astrophotos. with its 50mm lens and smooth helical focuser, the versatile 50mm multi-use guide scope with helical focuser is an ideal addition to any astrophotographers collection of gear;
• Multi-use guide scope with helical focuser features a built-in helical focuser that allows precise focus adjustments with zero flexure for rigid performance. obtaining a clear, sharply focused view of potential guide stars is quick and easy with this sturdy scope;
• High power guide scope features a machined, knurled ring to make fine focus adjustments nice and easy, while a thumbscrew lets you lock-down the focuser in-place once adjustments are complete. The focuser boasts 8 mm of precise helical focus travel, plus telescoping drawtube housing provides up to 30 mm of additional back-travel if needed for your particular autoguider device;
• This complete guide scope comes with two heavy-duty guide scope rings and a 3.5" long, 1.18"wide dovetail mounting bar, which is compatible with dovetail finder scope bases for easy attachment. the dovetail bar features five threaded through-sockets for versatile attachment options. the included guide scope rings feature six metal thumbscrews for precise aiming;
• The quick guide scope with helical focuser also features male t-threads on the focuser collar for secure threaded attachment of guide cameras equipped with female t-threads.

Note: The SV106 can connect directly to an eyepiece (8mm or longer) for imaging, resulting in an inverted image. This setup enables deep-sky observation without a fixed reference. However, adding a zenith mirror increases the weight of the star guide and will not achieve focus. 

The SV550 refractor APO triplet apochromatic telescope 80mm DSO deep space vision and photography suits:

Bundle1: SV550 80APO OTA  + SV209 field flattener + SV210 CAA 360 degree rotator camera angle adjuster + SV226 Filter Drawer + SV172 430mm Dew Heater + SV220 7nm Dual-Band Filter

Bundle2: SV550 80APO OTA  + SV209 field flattener + SV210 CAA 360 degree rotator camera angle adjuster + SV405CC Cooled Color Camera + SV211 Telescope Handle + SV191 SWA Zoom Eyepiece

Bundle3: SV550 80APO OTA  + SV209 field flattener + SV210 CAA 360 degree rotator camera angle adjuster + SV226 Filter Drawer + SV165 Guide Scope

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• WIFI connection; connect your smartphone for remote control; suitable for bird watching photography and target training; allow you to see the surface of the target in real time on your phone; greatly improve efficiency and comfort;
• CS-C interface; the front end of the camera is CS-mount; equipped with a CS-C adapter ring; which can be used with C-mount lenses or CS-mount lenses for shooting; time-lapse shooting is possible in schedule shooting mode;
• 32G TF card memory; equipped with 32G large-capacity TF card; it does not occupy the storage space of the mobile phone; you can download and share photos in real time;
• The camera is supported by WIFI Mode and UVC Mode. When using uvc mode, you need to use the built-in data cable, connecting the Type-C port to the device, and the USB port to the PC; Open the UVC mode software on the PC (Amcap software can be used), select UVC CAMERA, and enter the image interface.

Get Reviews of SC001 camera

• SV193 0.8x focal reducer can take dazzling celestial photos without worrying about the distortion of the star points on the edge of the photo;
• The front is a standard 2-inch socket for connecting the main lens. The rear is a M48x0.75 thread for connecting the camera mount. Supports full-frame cameras
• The SV193 can be connected to a standard 2" filter thread to add the light pollution filter you need；
• The 0.8X defocus system shortens the exposure time. It can meet the needs of astronomical photographers who need sufficient exposure in a short time.

SV193 Connect with 1.25inch SV705C Camera

• Get a sharp image; uses an extremely sensitive CMOS monochrome sensor; the IMX290LLR-C; which has very high QE (80%); very low readout noise (1.0-3.2e); pixel size 2.9um; 1944*1096 pixels resolution; 6.46mm diagonal;
• Has a stable transmission; built-in 128MB DDRII image buffer; cache the image and transfer it to the computer when the USB interface is not busy or being interrupted; get a sound frame; allows a slower computer with USB 3.0; to capture every frame ;
• Improve camera sensitivity; has ROI and BIN functions; any resolution can be set; could read a smaller region of interest (ROI) out from the sensor; leaving the image scale of the object being imaged unchanged; greatly increase the camera rate; BIN2*2 pixel can merge two adjacent pixels; which can improve camera sensitivity;
• Can automatically guide; designed with ST4 guiding port; supported by PHD2 and the ASCOM platform; use the computer to control the telescope; has an auto-guiding port; which connects directly to the auto-guider; which usually referred as an ST-4 port; works with analog signals;
• Good transformation performance; using USB3.0 high speed data transmission; quick and efficient for planetary imaging.

IMX662 1/2.8" CMOS Sensor: Back-illuminated (BSI) pixel technology, high quantum efficiency,high sensitivity, fast readout speed, no glow and greatly improved NIR, can effectively avoid overexposure,low noise (0.7e-), ideal for low-light planetary imaging;
High Resolution & Frame Rate: 1920×1080@107FPS, captures fast-moving planets (Jupiter, Saturn) sharply;
Low Readout Noise: 0.7e- ensures cleaner, detailed images with minimal interference;
USB 3.0: 5Gbps transfer speed, 10x faster than USB 2.0, boosting workflow;
ST4 Guiding Interface: Compatible with PHD2/ASCOM, enables precise celestial tracking;
Wide Compatibility: Works with various telescopes and guiding equipment;
Heat Dissipation: Ensures stability during long exposures, reducing noise;
HDR: Captures vibrant, aberration-free planetary details with broad dynamic range;
128MB DDR Buffer: Prevents image loss, supports continuous capture;
Any Area ROI: Flexible resolution for targeted imaging without scale loss;
12-bit ADC: Enhances dynamic range and color accuracy.​

• The SV105 electronic telescope eyepiece is the basic method for starting astronomical imaging; you can use the SV105 electronic telescope eyepiece to image it; which is more suitable for beginners who like to do astrophotography;
• SV105 telescope camera is suitable for lunar and planetary photography; share the view of bright planets; moon and terrestrial targets; just point the telescope at the moon or planet and record a quick video; you can transfer the real-time view of the telescope to your laptop or PC. Dark light compensation technology; greatly improve the camera's image clarity in low light conditions; no pixel vignetting;
• Plug and play; no driver required; real-time dynamic observation; clear images; SV105 electronic telescope eyepiece compatible with Windows system needs to download Sharpcap Capture; Linux system needs to download AstroDMx Capture; Android system needs to download USB Camera;
• The image processor adopts dark light compensation technology; SV105 electronic telescope eyepiece can greatly improve the image clarity of the astronomy camera under low light conditions;
• Interesting and useful USB eyepiece camera; standard 1.25 inches; threaded M28.5x0.6; can be used with telescope filters; directly connected to the telescope;
• The SV105 electronic camera uses a 1/2.8" IMX307 imaging sensor; up to 30 frames per second at 1920*1080 resolution; can record 2K video at high speed.

• SV209 0.8X focal reducer/field flattener is designed specifically for prime focus astrophotography with the SVBONY SV550 122mm f/7 apo refractor;
• It can correct the defect of field curvature of the user's shooting target; improve the imaging quality and shooting efficiency of the edge of the field of view;
• It converts the 854mm focal length f/7 refractor into a 683.2mm f/5.6 system for faster and wider field astronomical and terrestrial photography;
• In addition to reducing the focal length of the telescope and thereby increasing the photographic speed, the flattens the normal field curvature inherent in refractors. This provides images that are sharply focused out to the corners of DSLR and CCD imaging chips;
• SV209 0.8x reducer has a metric 63x1 thread; the telescope reducer flattener screws into the focuser to ensure a secure connection.

• At full resolution, the camera frame rate of SV505C can reach 93fps, and more frames can be captured at the same time. Especially in the case of bad weather, the shooting can be completed quickly by using the shooting gap time;
• SV505C has a QE of about 80%. It has extremely high sensitivity in the near-infrared region and extremely high signal-to-noise ratio in the dark environment. It is very suitable for photographing the surface details of Mars, Jupiter, Saturn and other solar system planets and the moon. The camera has extraordinary sensitivity in the infrared band;
• The SV505C has a 1/1.8" frame, and the chip area is 7.9mm x 4.5mm, which means that the photosensitive area is almost twice that of the sv305 pro. With the same telescope, a larger area can be photographed.

• The SV905C guiding camera and SV165 mini 30mm/120mm F4 guide scope is a cost-effective and practical guiding system;
• Compact and highly sensitive 1.23-megapixel color camera with 1/3” CMOS 1280x960 sensor perfect for autoguiding or planetary imaging; small 3.75-micron pixels; high peak QE of 80% and low read noise allows tight tracking of faint guide stars;
• Sharp image; Ultra wide band fully multilayer coated lens; doublet glass and the 30mm achromatic optics prevent irritating reflections can bring you bright and clear images.