• 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

• 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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• 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 SHO filter 5nm 2 inch is highly transparent, allowing the emission spectrum of the nebula to collect as much energy as possible by accumulating exposure. There is higher contrast and the level of the nebula is richer and more delicate.
• This filter set is not suitable for telescopes with a focal ratio below F/5;
• 2 inch mounted; The filter can thread directly into the 2 inch barrel of your telescope eyepiece.

Unboxing Video     SHO Filters Reviews by @CuivTheLazyGeek

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• Compatible with mainstream auto guiding cameras; 1.25in and M42 mount interface designed for compatible with SV305 Pro and for Orion ZWO QHY and so on auto guiding cameras(Some camera models require additional accessories to assist in focusing)
• Sharp image; Ultra wide band fully multilayer coated lens; double glass and the 30mm achromatic optics prevent irritating reflections can bring you bright and clear images
• 45mm helical focus stroke; Allows easy and precise focus adjustments and f4 aperture optics provides a very wide field of view which will help to quickly find the target when performing astronomical observations
• Nylon-tipped thumbscrews; Comes with the mounting rings with plastic tipped screws as not to scratch the scope tube and it can be moved to any position
• Quality craftsmanship; By using high-level CNC metal processing technology; SV165 guide scope has exquisite appearance; delicate feel and beautiful shape; fine workmanship bringing you visual enjoyment

• Double pair of magnets; SV226 photographic filters drawer compared with traditional screw rotation; magnet has stronger adsorption force; which is convenient for you to install and use
• Two filter holders; compatible with 1.25-inch and 2-inch filters; plug and play; reducing repeated installations in dark environments
• Locking function; lock screw can adjust the tension to eliminate the gap; solve the light leaking issue under long exposure; which is a double insurance for you
• M42-M48 adapter; camera side thread is male; filter mounts thread is female; you can use the adapter to coonect cameras of different specifications
• CNC integrated molding; more precise production process; strong and sturdy; you can use filter drawer with confidence

• Flat field correction; this design solves the problems of edge blur; distortion; field curvature; and chromatic aberration; bringing a more comfortable birding experience;
• ED glass; the binoculars for adults greatly eliminates chromatic aberration; highly restores real scenery; and makes the picture sharp and clear;
• FMC coating; improve light transmittance; reduce light loss; allowing you to obtain clearer and brighter images and provide a better observation experience;
• Magnesium alloy mirror body; the ED binoculars is light weight and corrosion resistant; superior to other materials and long use time;
• Large eyepieces; SA205 binoculars have strong light gathering ability; providing more realistic colors; a wider area of the sky can be seen simultaneously;
• Diopter adjustment; adjust visual balance for easier observation and convenient for people with myopia or presbyopia to see the effect directly without wearing glasses;
• Anti-slip focusing wheel; smooth focusing handwheel ensures accurate and stable focusing with one hand; fast focus and easy to operate.

• The SV227 SII filter blocks infrared wavelengths from 700nm to 1000nm so you don't need a separate IR-Cut filter;
• 2 inch mounted; the filter can thread directly into the 2 inch barrel of your telescope eyepiece;
• 300-1000nm wavelength range; the SVBONY SII 5nm 2" Filter transmits a 5nm bandwidth of light that is centered at 672nm;
• This SII narrow band filter reduces other transmissions; including wavelengths of light that are responsible for light pollution;
• The narrow bandwidth and high transmission rate of this filter will make you experience a major boost to contrast.

Note: This OIII filter is NOT for use on the Sun, and is also unsuitable for telescopes with a focal ratio below F/5. 

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• Use this APO OTA apochromatic refractor to reveal the wonders of celestial bodies; you can observe the Messier catalog targets; the common shooting targets M42 M45; the difficulty factor is simple
• The triplet apochromatic optics structure (1 piece of S-FPL51 low-dispersion ED glass and 2 pieces of correction glass) effectively improves the blue-edge chromatic aberration problem of single-ED structure imaging
• The telescope uses an air-spaced triple optical design that virtually eliminates chromatic aberration; resulting in bright; high-contrast images for exploring galaxies with better graphic clarity
• This little scope also includes the use of a 2.5-inch magnesium alloy dual-speed toothed focus mount (1:10); which reduces vignetting on full-frame cameras and reduces the weight of the support platform
• This APO adopts extreme extinction measures; there are multiple light barriers inside the focusing seat and the inner wall of the lens barrel; and 4 extinction barriers are designed to meet the ultimate pursuit of extinction

Note: This SV550 80 OTA comes with a dedicated dovetail slot for the finderscope.

• 102mm objective lens diameter and f/7 focal ratio telescope OTA; large objective lens brings more lights into the scope body and you will get more bright and clear image;
• Doublet air spaced achromatic S-FPL51 ED glass provides you less chromatic aberration image;
• Crisp Image; ultra wide band multi-layer coating technology; 102mm aperture optics and retactable lens hood deliver bright wide-field images with sharp resolution;
• 90mm back focus; it comes with dual focus rack and pinion focuser with focus knob cover; you can get precious focus easily;
• Package includes; 102mm refractor OTA; 2 inch to 1.25inch adapter;OTA rings and dovetail; objective focuser wheel cover; a package with die-cut foam insert.

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• The ultra-wide 68-degree field of view eyepiece provides a stunning observing experience;
• The eyepiece uses a fully multi-layer coated lens. Broadband green film optical glass increases light permeability for sharp images;
• The multi-element design provides sharp images, highly achromatic, with excellent color correction and contrast;
• Black anodized aluminum housing. Interior is blackened to eliminate light scatter and contrast;
• Foldable soft rubber goggles. Block stray light and also bring convenience to people who wear glasses.

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• SV215 zoom eyepiece is a good assistant for you to observe and take pictures of the planets; it is a good helper for the amateur astronomers to observe Venus; Mars; Jupiter; Saturn etc;
• Adjustable focal length; SV215 3 mm to 8mm zoom eyepiece equivalent to multiple eyepieces; this helps you to zoom in and out rather than changing lens;
• Parfocal across the entire zoom range; minor tweaking may be necessary; you do not need to refocus every time you change the focal length;
• Constant field of view and eye relief; the apparent field of view and the usable eye relief to stay the same as the focal length changes;
• Click and stops design; there are clicks and stops as you pass through the marked zoom levels; easy to use even in the dark
• Zoom ring moves smoothly; the zoom is smooth and gradual as you twist the eyepiece;
• 6-element of 4-group lens structure; fully multi-coated optics for remarkable sharpness; contrast and color correction.

Note: The front focal point of the SV215 is located inside the eyepiece body. It requires a main mirror with sufficient focusing range to ensure smooth and focused imaging.  Iis not suitable for 1.25-inch interface birding scopes. 

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• 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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• SV705C telescope camera is not only for planetary imaging, but also super well for EAA (Electronically Assisted Astronomy) and nebula Imaging;
• IMX585 CMOS color sensor; Compared with IMX485, it produces up to 45 fps with super low readout noise. It also increases the sensitivity by approximately 1.7 times compared to IMX485. IMX585 has 3 times the number of full well charges, and has a very high signal-to-noise ratio;
• 1/1.2-inch frame, a pixel size of 2.9μm*2.9μm, a maximum resolution of 8.30 Mega Pixel (3586*2180), an imaging area of ​​11.2mm×6.3mm, and a diagonal of 12.85mm, which can obtain rich celestial details;
• The near-infrared sensitivity is 1.7 times that of the previous generation; which can greatly improve the near-infrared shooting efficiency and capture more details of celestial objects under the same exposure time;
• Dual-gain HDR; which still retains a very high dynamic range at high gain; about 8 times that of the previous generation; which can greatly reduce the read noise;
• Based on the back-illuminated sensor and advanced pixel technology; the SV705C's full well charge can reach 38ke; the peak QE of SV705C can reach about 90%; you will get the better image quality;
• The front end of the camera is a CS port; and is also equipped with a C-CS adapter ring; which can be used with C-mount lenses and CS-mount lenses to make time-lapse video; with a fisheye wide-angle lens; it can be used for all-day.

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• 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.

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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.

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• FMC coating; The fully multi-coated objective lens ensures high transmittance for a brighter and clearer aperture, and providing clear, detailed and high contrast images;
• Wide angle; 26°wide angle binoculars gather more light than our eyes, so it works better in observing the moon, constellations, Milky Way etc;
• The long depth of field design; it almost seems as if you are standing on a very high mountain in absolute darkness; from the recent focus distance to infinity; no need to twist the eyepiece frame to focus and operation portable;
• With a magnification of 2.1 times, you can observe not just the main stars in a constellation, but many you have probably never even seen before;
• Finely crafted; fine workmanship; exquisite appearance; easy to carry; the objective lens has a standard 2-inch filter thread; which works better with a light-astronomical astronomical filter.

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• The main function of ADC is to reduce the color change caused by atmospheric dispersion and improve the imaging effect of planets, especially low-altitude planets;
• A pair of prism lenses adopts double-sided coating process to reduce light loss; coating adopts anti-reflective broad-band; applicable range from 300nm to 700nm;
• Camera and eyepiece side 1.25 inches barrel with T2 male thread; adaption is simple through T2 thread and 1.25 inches barrel on camera side and 1.25 inches barrel on telescope side;
• Through the use of 2 quality minimum 1/4λ BK7 prisms, it corrects the false colour introduced by the earth´s atmosphere, double wedge prism with 4.5 degree declination adjustment range;
• The ADC corrects the dispersion effects of earth´s atmosphere; you will get sharper images of planets and moon; when used for planetary imaging; it changes the clarity of the image dramatically; particularly in the luminance channel when LRGB imaging;
• Ring scale for adjusting dispersion correction; less fringing; clearer planet photos and more details; the eyepiece or camera installation interface adopts coaxial locking interface ensures sufficient coaxiality;
• FMC prism lens; prism lenses employ a double-sided coating process to reduce light loss make sure the light transmission of the ADC is high.

• USB interface; plug into a USB power adapter; a portable charger; the USB cable makes lens warmer ideal for indoor and outdoor use;
• Temperature range; working temperature adjustment range from 25 degrees to 70 degrees to suit different weather environments;
• Fastener design; with handy fasteners; it can wrap around your lens or scope with security and is easy to adjust;
• 430mm effective heater length; liminate dew; fog; and condensation with our specially crafted lens warmer during cold weather photography;
• Designed with PWM Function, which can provide more accurate, energy-saving, efficient heating control, thus enhancing the performance and reliability of telescope equipments.

Note: This dew heater is suitable for SV503 70ED, SV48P, MK105, SV503 80ED, SV503 102 ED, SV550 80 APO

• This UV/IR Cut off filter blocks undesirable ultraviolet and infrared rays that may interfere with obtaining the high contrast and high quality images possible with a digital sensor
• It serves as a permanent lens protector;digital imaging with DSLR cameras;CCD cameras;and modified WebCams;or telescope
• True optical quality glass substrate and coatings achieves greater detail;less chromatic aberration;more natural colors and finer color gradation
• Combine with any standard 1.25” filter threads for 1.25" eyepieces and other accessories to deliver the sharpest images possible;reducing ghost images caused by IR radiation
• Comes with a plastic box to keep it safe and clean when not in use.

• UHC filters or light pollution reduction filters are designed to selectively reduce the transmission of certain wavelengths of light;especially those produced by artificial light;
• Sky background is darker;and contrast of emission nebulae are noticeably improved;the perfect filter for viewing nebula from light polluted skies;or for boosting the contrast of nebula from dark sky sites;
• Due to its ability to produce exceptionally sharp and clear images;this UHC filter is considered one of the most popular astronomy accessories;it can be used not only for celestial observations but also for astrophotography;
• 1.25'' barrel diameter simply attach to eyepiece cased in a sturdy transparent case;standard filter thread for 1.25" eyepieces and other accessories;
• Optical glass lens;aluminum frame;significantly reduces light pollution;great for city and suburban observation.

• Male thread and female thread both are M48*0.75mm;Solving spacing problems in astrophotography and eliminates a range of focusing problems;
• Sturdy material;Fully metal construction and anodizing aluminium process; durable for long time use;
• Meet different needs;The required spacing can be achieved by combining several extenders of differing lengths; You can use 1 piece; 2 pieces ; 3 pieces or 4 pieces of the extension rings as you like;
• SV119 extension tube for getting the correct image scale or the exact spacing required for reducers or field flatteners;
• Made of fully aluminum alloy and durable;