• The SV550 APO is a compact refractor with 122mm aperture; f/7 focal ratio and 854mm focal length; a great travel telescope for astrophotography and observation; and even some fainter deep sky objects due to the higher limiting magnitude. It weighs 6.44kg/ 14.18lb; easy to carry out and comes with a carrying case bag;
• The SV550 122mm adopts a FPL-51 triplet apochromatic lens structure which contains one piece of ED glass; the triplet lens provides better correction of aberration and greatly reduces chromatic aberration and enhance the clarity and sharpness;
• The gear ratio of the dual speed 2.5-inch toothed focuser is 1: 10; which makes it easy to achieve accurate focus; the dual speed focuser can provide two focusing speeds by using a set of co-axial knobs; for fast focusing and fine focusing;
• The length of the dovetail is as high as 300mm; it can maintain the balance to the greatest extent; and it will be more convenient in the adjustment process.

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The SV550 APO triplet refractor is a compact refractor with 122mm aperture, f/7 focal ratio and 854mm focal length, a great travel telescope for astrophotography and observation. The APO refractor is an absolutely upgraded version of the SV550 80mm. The refractor gathers more light, and offers more clear and detailed images, suitable for deep sky photography and observation, for galaxies, nebulae, star clusters and even some fainter deep sky objects, due to the higher limiting magnitude.

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• Excellent clarity and resolution: Adopting advanced FMC multi-layer coating technology, the image quality within the zoom range is comprehensively improved, ensuring precise and error free aiming every time, bringing you an unprecedented observation experience;
  Adjustable Rotating Eye Mask: The cleverly designed rotating eye mask can accurately adjust the distance between the eyes and the eyepiece according to personal needs, ensuring clear and unobstructed vision while providing ultimate comfort for your eyes;
  One stop solution: The selected combination set includes a viewing mirror, desktop tripod, and smartphone adapter. It offers a one-stop solution to meet your diverse needs, whether it's professional observation or creative shooting, making it easy to handle;
  Anti loss eyepiece cover design: The innovative anti loss eyepiece cover design effectively prevents accidental loss of the cover during operation, ensuring that your observation tool is always in the best condition, making every observation more reassuring and worry free;
  Multi functional zoom capability: With a zoom range from 25x to 75x, whether you need meticulous close range observation or a broad field of view, it can be easily achieved;
  Flexible installation options, the base adopts a standard threaded interface design, making it easy to connect to various tripods. Whether indoors or outdoors, it can meet your bird watching and target shooting needs, ensuring stable and reliable observation every time.

This sv550 prime focus photography, also known as direct focus photography, is a method of directly using the telescope to take pictures without adding any optical objects between the telescope and the camera.

This SV550 122 APO telescope set comes with a SV550 Triplet APO, SV211 203mm handle, SV223 90-degree 2" diagonal, zoom eyepiece, and a customized backpack for telescope. Get this great travel telescope suits for your astronomical visual observation.                                                                                                         

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Unlock the full potential of your telescope equipment for deep space photography with our versatile and multifunctional accessories! Introducing the SV550 80 APO telescope OTA and SV209 1.0x filed flattener & focal reducer. It is suitable for visual observation and deep sky photography with dso cooled camera.

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• More clear image; APO astro camera lens consists of a 3-group 5-piece petzval objective lens structure; which includes a set of triplet lens; bringing you a clearer image;
• 44mm full-frame; APO telephoto lens avoids aperture blocking; whether mirrorless camera; SLR camera; or deep-sky camera; you can photograph clear image without trouble;
• Convenient operation; SV555 telescope camera lens is equipped with an accessories for EAF (not included) for automatic and accurate focus; you can get an accurate angle to photograph quickly and conveniently;
• Single-speed focus; the telescope camera lens supports fine adjustment; enabling you to adjust the photography angle accurately for fast shooting;
• Various aperture range; the astronomical photography lens can adjust the aperture from F22 to F4.5; meeting a variety of use needs; the included graded adjustment ring and scale also make it convenient for photography by preventing accidental touching;
• Compatibility; SV555 telescope camera lens features an M48x0.75 filter thread to install the 2" filter; additionally; the V-style & Arca-Swiss quick-release system is compatible; flexible and easy to use; enhancing the efficiency;
• Convenient to use; the APO astro camera lens is featured with a handle; bracker; and dovetail plate; making it more convenient to use the lens when shooting.

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SV555 FAQ & Test

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

• SV605CC is a 1-inch color deep space camera with square frame, 3.76um pixel size, better resolution and 80%+quantum efficiency. It can get good imaging in light polluted environment with double narrowband filters;
• IMX533 color 1-inch chip: The glow of CMOS will affect the signal-to-noise ratio of the glow affected area, resulting in residual glow or reduced signal-to-noise ratio of the area. IMX533 achieves glow suppression and better shooting effect;
• With a short focus mirror or a fast mirror system: Even if the target is too small, more details cannot be obtained due to the analytical force; IMX533 chip uses 3.76μm pixel; easy to analyze 10 angle split field of view;
• Cooling System: Thanks to the two-stage TEC cooling, the SV605CC can lower the CMOS sensor temperature to 30°C below amboent temperature, which can greatly reduce dark current generation and sensor noise even during longer exposure times.
• Support system: SV605CC camera works with Windows, Linux, Mac OS, Chrome OS and Raspberry Pi systems by running AstroDMx Capture. For Windows system, also support Sharpcap, N.I.N.A, TheSkyX and other softwares run throuth ASCOM platform by suing ASCOM driver;
• The Bayer Pattern of SV605CC is GRBG.

Note: The SV605CC has completed the product change to optimize the horizontal stripe, and the S/N serial number of the new product has been changed to S/N(B).

• Reduce light pollution; SV220 Dual Narrow bandwidth H-Alpha/O-III 7nm narrowband filter properly designed for astrophotography both in light polluted environment.It can greatly reduce the interference from natural light sources such as moonlight or artificial light pollution such as street lighting;
• Astrophotographic;the filter enhances contrast during visual observation of gaseous and planetary nebulae in all sky conditions; the filter allows high-contrast imaging even in areas with strong light pollution;
• Improving contrast; an increase in contrast can be perceived as an increase in brightness; the filter makes the contrast of the nebula and sky background increase; not the nebula brighter;
• Strong applicability; the filter applicable to SVBONY's electronic cameras and astronomical cameras; 
• Useful for imaging emission nebulae, planetary nebulae and supernova remnants. Designed to sharply cut off the inference of artificial light from sodium vapor or mercury vapor street lights and other unwanted disturbance like sky glow.

Note: This filter set is not suitable for telescopes with a focal ratio below F/5.

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• The sensor incorporates a 14-bit A/D converter, the 14-bit digital output makes it possible to read out the signals of 9.07M effective pixels at a high speed of 20 FPS. Read-out noise is as low as 1.0e which makes sure the highly suitable for high definition, low noise deep space objects imaging;
• Foldable and portable: This camera is foldable and easy to carry, it can be easily stored in your backpack or pocket;
• The SV605MC features a USB 3.0 data transmission interface and a built-in 256MB DDR3 high-speed memory for fast and efficient deep-sky objects imaging, and to buffer image data and ensure stable data transmission;
• The HCG digital noise reduction technology is adopted, and the readout noise can be greatly reduced while maintaining a high dynamic range;
• SV605MC features an improved amp glow suppression design, which guarantees a high-quality "dark" image. 

• Cut-off depth ≥OD4; highly efficient in blocking urban light pollution or other background light; use this multi-bandpass filter for astrophotography in urban without traveling long distances to the suburbs;
• Compatible with 99% astrophotography systems; if you have different astrophotography systems, no need to prepare dedicated filters, one SV240 can meet your needs due to its high compatibility;
• Photoing more kinds of targets; SV240 multi-narrowband filter select Ha,OIII,H-Beta wavelength effectively can cover almost photoing needs;
• High transmittance; the >90% transmittance in core wavelength of Ha,OIII, H-Beta, more objects for your astrophotography by using this multi-bandpass filter;
• Multi-bandpass filters; without multiple filters' combination for colorful images; rich color in your lens;
• Resistant of BORTLE 8; the multi-narrowband filters can be resistant from Bortle 1 to Bortle 8 cities, suitable for almost all urban;
• 300-1100 mm working wavelength; the wider coverage of this multi-narrowband filter allows it to have a strong ability to tack light pollution.

Note: Optical filters that use infrared light often cause halos in the NIR region; which are exacerbated by the halos produced by the filter itself.

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• The SV230 super zoom aspheric eyepiece is featured with clickstop click and Parfocal design, 57°-72° panoramic wide angle provides you with the ultimate observation comfort.
• It supports astigmatic corrector connection. Long eye relief of 17-19mm for comfortable viewing position, even for eyeglass wearers. 
• It can be used during the day and in the night, sky support excellent resolution and contrast values as well as a sharp image at a large apparent field of view.
• Observing planets with SV230 eyepiece is highly convenient, as it allows for clear and undistorted images without any edge distortion. 

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• 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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• Unlock the full potential of your telescope equipment for deep space photography with our versatile and multifunctional accessories;
• Introducing the SV165 30mm f/4 guiding scope, SV905C cmos guiding camera,  SV193 0.8x filed flattener & focal reducer;
• You can choose whatever you like.                                     

Set Includes:

• SV503 102ED Refractor OTA Telescope, SKU: F9359D
• SV193 Focal Reducer, SKU: W9152D
• SV188P Diagonal, SKU: F9171B
• 2inch UV/IR Cut Filter, SKU: F9127B
• SV211 203mm Handle Bar, SKU: W9163B

• This replacement filter holder is designed for SVBONY SV226 filter drawer;
• CNC one-piece molding; more precise production process; strong and durable;
• Can accommodate 2" round mount filters, as well as other 2" round filters with a width of 50.8mm and a thickness of 7.5mm;
• Filter drawer thickness; the thickness is related to back focal length; back intercept affects the quality of imaging; it limits the use of accessories and optical path length;
• Use with telescope; connect the telescope to the focal reducer and drawer filter; then connect the adapter to the camera.

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• Photography Set Includes:
• SV503 102ED Telescope, SKU: F9359D
• SV193 2-Inch 0.8x Focal Reducer / Filed Flattener, SKU: W9152D
• SV211 203mm Telescope Handle Bar, SKU: W9163B 
• Universal Dovetail Slots, SKU: W2370A
• SV172 Dew Heater Strip, SKU: W9132D

• CNC hollow structure; SV225 altazimuth mount adopts hollow structure; reduce the weight(2.34Kg); convenient for you to carry out; light weight
• Fine adjustment shift; SV225 alt-az mount can fine-tune the telescope to meet your adjustment efficiency in different scenarios
• Variable speed gear; SV225 alt-azimuth mount is variable speed gear slow motion controls on both axes to let you smoothly follow the motion of the moon and planets
• Load capacity; with a payload capacity of 10kg; even light weight; the SV225 alt azimuth mounts will match well with the telescope; camera and so on
• Applicable scenes; SV225 alt-az mount is suitable for many senorios; like astronomical visual observation and surface observation

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• SV605MC astronomy camera is designed for deep sky photography. It can be used with other attachments for a series of photography activities;
• It can also be used for moon, planet and sun (extra with solar filter) photography;
• The sensor incorporates a 14-bit A/D converter, the 14-bit digital output makes it possible to read out the signals of 9.07M effective pixels at a high speed of 20 FPS;
• Read-out noise is as low as 1.0e which makes sure the highly suitable for high definition, low noise deep space objects imaging.

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• Improve the light gathering capabilities; 30mm wide aperture; has a strong light gathering capability; allowing you to see faint objects in the sky;
• Appropriate focal length; 120mm focal length; which is ideal for your observation; a powerful 6x crosshair; reticles make lining up your target easier;
• Comfortable to observe; 90-degree right angle; comfortable observation angle improves the experience of using the finder; no need to bend over or twisting your neck; improve the experience of your observation;
• Get a erect image; prism steering was added to the finder optical system; meet the observation habit that people always have
• Fully multi coated lens coating; improve the light transmission; provide a clear view of the night sky; ensures a sharp and bright image; making it easy to find your target fast.

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This SV503 80/102ED Telescope Bundle Set includes SV503 ED series refractor OTA, SV188p diagonal, SV191 7.2-21.6mm zoom eyepiece, SV182 finder scope and a 1.25inch UHC ultra high contrast filter.

The popular SV503 series includes SV503 102ED refractor OTA, SV193 0.8x field flattener & focal reducer, SV165 mini guide scope, the side dovetail slot, the SV226 filter drawer and SV211 red handle bar. This bundle set will provide the best optical quality, whether you use it for Deep-Sky Object or Planets, visual or photography.

Unlock the full potential of your telescope equipment for deep space photography with our versatile and multifunctional accessories! Introducing the SV550 122 APO telescope OTA and SV209 0.8x filed flattener & focal reducer. It is suitable for visual observation and deep sky photography with dso cooled camera.         

Review Video by @NebulaPhotos     Unboxing Video