• Fully metal construction and anodizing aluminum process;durable for long time use;
• Use this extension tube for getting the correct image scale or the exact spacing required for reducers or field flatteners;
• T2 interior thread and T2 exterior thread for solving spacing problems in astrophotography and eliminates a range of focusing problems;
• Astronomical T2 thread extension tube;male thread:M42x0.75mm;female thread: M42x0.75mm;
• Link or extend tube length of the M42*0.75 products;Male thread;M42*0.75mm;

• IMX715 sensor; 1/2.8-inch Format, 1.45μm x 1.45μm pxel size, supports up to 8 million pixels, enabling it to capture extremely detailed image information. It offers higher dynamic range and lower noise,  ensuring high-quality and detailed images even in low-light conditions, meeting the needs of professional astrophotography; effectively reduces star trailing or blur during long exposures, ensuring that no details are lost;
• STARVIS II technology; the SC715C osc camera employs advanced image processing algorithms, resulting in higher sensitivity and lower noise levels;
• USB 3.0 Port & ST4 Guide; the SC715C astronomy camera supports data transmission at 45.5 frames per second at full resolution; the cmos camera IMX715 can also connect to an equatorial mount to adjust its position in real-time, preventing shake caused by positional drift and ensuring clear, detailed images;
• 512MB DDR3 cache; allowing the osc camera to respond quickly to every command, reducing delay during focusing and zooming. It ensures smooth, seamless shooting, making it easy for you to effortlessly capture every brilliant moment;
• C/CS-mount eyepiece solution; suitable for different installation needs.

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• Dual Magnet: The SV226 utilizes a dual magnet design that provides dual stability to ensure your filter stays securely in place. And it helps prevent accidental dropping;
• CNC Crafting: This filter drawer is crafted using advanced CNC one-piece molding technology, ensuring exceptional strength and durability;
• Locking Mechanism: SV226 M54 Filter Drawer features a locking screw design that eliminates gaps. It also prevents light leakage during long exposures;
• Dual filter holders: Plug-and-play, reduce re-installation in dark environments;
• 20mm Thickness: SV226 is designed with a 20mm thickness to ensure that your wide-angle field of view remains unobstructed.

Note: The M54 can be adapted to full-frame cameras.

1. High-Performance Optics: Mk127 built-in flat-field design and 3-mirror Mak structure with a separate secondary mirror, this combination corrects for coma and astigmatism,  delivering tack-sharp images with exceptional contrast and clarity.The mirror reflectivity over 99%, which significantly enhances contrast, you can get the detailed views of planetary nebulae and globular clusters;
2. 0.65X Focal Reducer: The 0.65x Focal Reducer can reducing the focal ratio of the MK127 from F11.8 to F7.8. This makes it easier to capture larger celestial targets and expands the telescope's imaging  field, making it right for capturing expansive skyscapes;
3. 127mm Aperture: The telescope features a large aperture of 127 mm and a focal ratio of F11.8. It balances light-gathering capability and field of view,delivering exceptional performance for both planetary and deep-sky observations;
4. Dual-Speed Focuser Design: Coarse adjustment knob, enables rapid movement of the optical system to achieve a rough focus. Fine adjustment knob is used for minute adjustments to obtain optimal image clarity, enhancing your viewing experience;
5. 1.25" and 2" interfaces: The telescope features 2" and 1.25" eyepiece interfaces, offering compatibility with a wide range of eyepieces and allowing you to customize your observing setup for optimal performance.

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These Mk105 telescope bundle are suitable for visual observation of the planets moon and etc. 

Bundle1 includes:

• MK105 OTA
• SV182 finder scope
• SV188P 1.25inch diagonal
• SV135 1.25inch 7-21mm zoom eyepiece
• SV225-SV225T AZ mount & tripod kit

Bundle2 includes:

• MK105 OTA
• SV182 finder scope
• SV188P 1.25inch diagonal
• SV135 1.25inch 7-21mm zoom eyepiece

• Global Shutter: High frame rate of 120 frames per second;
• Large Pixel: SC432M pixels are 9μm x 9μm for more detailed images;
• 1.1-inch Frame: Larger shooting area for less post-processing;
• Fan Cooling: Longer exposures reduce noise for better image quality;
• HCG: Turning on the HCG mode at a gain value of 140 dramatically lowers the readout noise while maintaining high dynamic range, avoiding celestial drag.

• APO and Double ED glasses reduce the chromatic aberration, which gives a bright image;
• The central focus ring allows spotting aims clearly at a fast speed;
• Fully multi-coated and K9 and Porro prism allows more light transmission;
• 45°design is an ergonomic proportion and suitable for eyes observing or capturing;
• IPX6 waterproof and anti-fog.

Note:SA401 comes with an eyepiece

The product corresponding to the SKU is as follows:

• SV406P 20-60X80 ED Spotting Scope, SKU: F9355B
• SA205 10x42 ED Flat-field Binoculars, SKU: F9389B
• SA205 8x42 ED Flat-field Binoculars, SKU: F9389A
• SC311 WIFI Camera, SKU: F9384A
• SA206 Night Vision Goggles, SKU: F9394A

Note: SV406P comes with an eyepiece

This SV48P Refractor OTA 90mm F5.5 Telescope Set includes SV48P refractor OTA, SV182 finder scope, SV188 diagonal, SV170 eyepiece and a SA402 tripod, which is suitable for Visual Astronomy.

Flat Field Correction: Resolves edge blurring, distortion, field curvature, and chromatic aberration;
ED Glass: Effectively eliminates chromatic aberration ;
FMC Coating: Enhances light transmission and minimizes light loss;
Magnesium Alloy Lens Body: Lightweight, corrosion-resistant, ensuring a longer service life;
Diopter Adjustment: Allows people with nearsightedness or presbyopia to view without wearing glasses.
Anti-skid Focusing Wheel: Fast and easy to operate for precise focusing.

• 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

• Built-in Flat-Field: Designed for effortless astrophotography, ensuring high-quality images;
• ED Extra-Low Dispersion Glass: Features a 4-element ED lens with FPL51 and lanthanum special glass to reduce chromatic dispersion;
• Dual Speed Focusing: 1:10 gear ratio for precise focusing;
• Light-Gathering Ability: With a focal ratio of f/6.78, it enables crisp, high-magnification observations;
• Retractable Lens Hood: The retractable hood blocks stray light for better contrast;
• 1.25" and 2" interfaces: Can switch eyepiece types freely.

Note: It needs to be paired with a diagonal to be in focus.

 Click here for SV503 70ED New vs. Old 

This Solar Set includes:

• MK105, SKU: F9382A
• SC432M Mono Sun Camera, SKU: F9387A
• SV229 solar filter, SKU: W9183C
• Solar Finder Scope, SKU: F9168A

Visual set includes:

• SV48P 90 OTA or SV48P 102 OTA
• SV182 6x30 Correct-Image finder scope
• SV188P 1.25inch diagonal
• SV135 Zoom Eyepiece 1.25inch 7mm to 21mm
• SV225 AZ-mount & tripod

Photography Set Includes:

• SV550 80APO OTA, SKU: F9381A
• SV705C Color Planetary Camera, SKU: F9198J
• SV165 30mm Guide Scope, SKU: W9125A
• SV209 1.0x Field Flattener/Focal Reducer, SKU: W9161A
• SV210 M63 CAA 360 Degree Rotator Camera Angle Adjuster, SKU: W9162A
• SV133 Filters Wheel 1.25inch Multiple 5-Position, SKU: W9103A

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SV202 Binocular 8x42 Portable IPX7 Waterproof is designed with low dispersion ED glass, which can make bright and clear image. 42mm large aperture objective lens can improve the viewing effect more comfortable. 7.5° wide field of view is wider. Right visual refractive adjustment, adjust visual balance, easy to observe. Lift the eye caps to eliminate stray light and make the image purer, which is Easier for users who are wearing glasses.

If you need a flat-field binoculars, you can choose SA205 10x42 ED Flat-field Binoculars.

• Suitable for bird watching, hunting, camping, hiking, sports and stargazing;
• If you're hiking or camping and you can't see further, these binoculars can help you see further;
• Outdoor enthusiasts like these telescopes because they are lightweight, portable, high quality and provide clear images;
• Using multilayer coated optical glass lens, the image is bright and clear without projection distortion. The eye mask can effectively eliminate stray light interference and obtain a purer image effect;
• Waterproof and fog-proof to withstand the harshest outdoor conditions, making them completely waterproof, protecting them from moisture and preventing any form of moisture or dust from entering the system.

SVBONY SV47 Binoculars Telescope,8x32/8x42/10x42 Professional Waterproof Fogproof Telescope,FMC BAK4 Binoculars for BirdWatch

Svbony SV181 fully metal 1.25'' R&P Newtonian reflector focuser with 65mm focuser travel. Very popular DIY accessory.

• Maksutov-Cassegrain Telescope Innovation: The SVBONY MK90 features a convex meniscus lens instead of a traditional Schmidt corrector plate, enhancing contrast and eliminating the need for periodic collimation; 
• Portable & Sturdy Design: With a sturdy metal construction, this grab-and-go Maksutov telescope withstands travel bumps and knocks, making it an ideal portable telescope for outdoor adventures;
• High-Performance Optics: 90mm aperture and 1250mm focal length (f/13.9) deliver crisp, detailed views of celestial bodies and distant objects;
• Vixen-Style Dovetail Mount: Effortlessly attaches to most mounts, offering versatile compatibility for your observing needs;
• Conical Extinction Tube: Effectively prevents stray light from interfering, enhancing your viewing experience;
• Perfect for Various Observations: Ideal for detailed lunar, and planetary observations, as well as terrestrial viewing, catering to both astronomers and nature enthusiasts;
• Complete Accessory Set: Comes with a dovetail mounting base, Vixen-style dovetail plate, objective lens cover, and dust plug, ensuring you're ready for any observing session.

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Best Astronomy Telescope for Beginners

• 90 mm aperture; 500mm focal length; compared with 70mm and 80mm; 90mm telescope has more light input and a wider field of view; observe the moon and deep space; which is very suitable for astronomy beginners
• Double speed focuser; the 2 inches rotatable double speed focuser; gear ratio of 1:10; precise adjustability for smooth operation
• The focusing mount with metal interface has higher interface accuracy; guarantees the parallelism of the optical axis; and enhances the observation experience
• Fully multil green coated lens; fitted with achromatic glass for good edge-to-edge viewing; fully multi green coated lens maximize light transmission eliminating false color
• 360 degrees rotation; convenient for photographic composition and visual observation; loosen the screw; the focus can be rotated 360 degrees; you can achieve astronomical shooting

Best Christmas Telescope for Kids and Astronomy Beginners

• 102mm large aperture; large objective lens refractor telescope; high resolution; good light collecting ability; f/6.5 focal ratio; imaging brighter;
• f/6.5 short focal ratio; larger field of view; can collect more light; the image is brighter; and the observation target is clearer and easier to observe;
• Dual-speed focusing; fast focus allows you to quickly move the focus wheel to roughly focus on your target; while slow focus adjusts focus more finely for optimal image clarity;
• Integral hoopd; the tube rings make the telescope more stable and avoid wobbling; and provide a stable support to keep the optical components of the telescope stable relative to each other;
• Easy to assemble and use; the telescope is designed to be user-friendly; it can be set up quickly without additional tools; you can find a lot of fun in assembling.

• 102mm large aperture; large objective lens refractor telescope; high resolution; good light collecting ability; f/6.5 focal ratio; imaging brighter;
• f/6.5 short focal ratio; larger field of view; can collect more light; the image is brighter; and the observation target is clearer and easier to observe;
• Dual-speed focusing; fast focus allows you to quickly move the focus wheel to roughly focus on your target; while slow focus adjusts focus more finely for optimal image clarity;
• Integral telescope rings; the tube rings make the telescope more stable and avoid wobbling; and provide a stable support to keep the optical components of the telescope stable relative to each other;
• Easy to assemble and use; the telescope is designed to be user-friendly; it can be set up quickly without additional tools; you can find a lot of fun in assembling.

Note: The main lens have been corrected completely.

Best Achromatic Telescope for Astronomy Beginners