• Enhanced Aluminum Die; the main mirror housing is made of precision molded ABS plastic and the two end barrels are precision machined from aluminum;
• 1.25 inches diameter; the SV221 diagonal mirror can be applied to a 1.25 inches telescope and a 1.25 inches eyepiece;
• With a brass pressure ring; the diagonal mirror has a brass pressure ring; which can prevent surface damage and scratch marks when the eyepiece is used with the diagonal;
• Supports 1.25-inch filters features internal extinction treatment and supports the connection of 1.25-inch filters; Offering versatility for various observations;
• With filter thread; the diagonal mirror has M28.5x0.6mm filter thread; which supports the connection of 1.25 inches filter;
• 90 degrees design; the diagonal mirror 90 degrees deflection angle design; you don't have to bend over when performing visual observation; and the observation experience is more comfortable;
• Internal extinction design; the SV221 has internal extinction treatment; and the acquired image is clearer and brighter.

Note: This diagonal can only be used with refractor telescopes and some catadioptric telescopes like Schmidt-Cassegrain, Maksutov-Cassegrain, etc. It not meant for use with Newtonian / DOB reflector telescopes or other variants of Newtonian telescopes.

• More clear image; SV555 astrograph telescope 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; This telephoto lens can avoid aperture blocking; whether mirrorless camera; SLR camera; or deep-sky camera; you can photograph clear image without trouble;
• Mounting kit available; SV555 astrograph is equipped with a bracket and belt for EAF; 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 astrophotography APO 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; dovetail plate;  more convenient to use when shooting. (Updated Version with more Focusing Stroke)

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Get SV555 Full Review by @Cuiv, The Lazy Geek        SV555 FAQ & Test  

• 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;
• Mounting kit available; SV555 astrograph is equipped with a bracket and belt for EAF; 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; dovetail plate; more convenient to use when shooting.  (Updated Version with more Focusing Stroke)

  Free Shipping     （It supports Afterpay）

Enjoy $20 off by using code: Cuiv20

• 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;
• Mounting kit available; SV555 astrograph is equipped with a bracket and belt for EAF; 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; dovetail plate; more convenient to use when shooting. (Updated Version with more Focusing Stroke)

  Free Shipping   （It supports Afterpay）

Enjoy $20 off by using code: Cuiv20

This SV550 triplet bundle includes:

• SV550 80APO;
• SV405CC osc cooled camera;
• SV209 1.0x flat-field reducer;
• SV210 M63 CAA 360 degree rotator camera angle adjuster;
• SV260 multi-broadband filter 2inch;
• SV226 2inch filter drawer;
• SV211 135mm handle bar.

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• 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.

• Multiple uses; SV191 7.2-21.6mm zoom eyepiece allows you to change magnification power without swapping out eyepieces;
• 1.25 inches standard eyepiece; not only for astronomical telescopes; but also for spotting scope;
• 7-Elements 4-Groups lens structure; 7-Elements 4-groups made of high index glass deliver sharp; high contrast vistas;
• M28.5*0.6 filter threads; base of SV191 zoom lens has a threaded adapter which allows standard 1.25in filter;
• 18-20mm eye relief; twist up rubber eyecup and 18-20mm long eye relief provides comfortable long term viewing for people with or without glasses.

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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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• 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

• 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

Super easy to use;eyepiece put into the extended cylinder;then screw t adapter;t ring adapter and extended cylinder together;then attach the camera to telescope manual focusing then get a clear image;fit for Nikon EOS DSLR SLR only
The SVBONY extended cylinder length 68mm;the extension tube fits all standard 1.25" telescopes and microscope;it can adjust eyepiece location;get more sharp images and different photographic results
Metal materials;fit any 1.25'' diameter eyepiece holder telescope and microscope;one time purchase for long term use
Added filter thread on the bottom for any 1.25-inch filter;Made of high quality aluminum alloy and durable

• SV305C telescope camera adopts the latest IMX662 1/2.8” back-illuminated sensor. Ultra-high sensitivity and ultra-low readout noise, it has better performance in planetary photography and lunar surface photography, and is very suitable for EAA;
• One-key quick setting: high-speed mode and deep space long exposure mode in the sharpcap software, users can choose according to their actual shooting needs, and realize one-key quick setting. It can be saved for convenient one-key setting next time. The unique one-button operation mode makes planet shooting easier;
• UV/IR CUT protective glass with detachable design: If users want to shoot infrared or ultraviolet bands, they can remove the protective glass at the front of the camera by themselves, connect it with a 1.25-inch extension tube, and connect an external IR685, IR850 or UV Venus filter to achieve different shooting experience;
• Using HCG noise reduction technology, when the gain is increased, the HCG mode will be automatically turned on, which can greatly reduce the readout noise, and at the same time retain the high dynamic range of low gain. When the gain value of SV305C telescope camera is 190, HCG will be turned on automatically.

Consumer Reviews of SV305C

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• 90-degree design; SV222 90 degree diagonal mirror provides a better observation experience when visually observing
• Extinction thread; Extinction thread prevents stray light from entering; ensures observation quality
• 1.25 inches thread; 1.25 inches SV222 telescope diagonal can connect filter; meet various needs of customers
• Locking mechanism; SV222 90 degree diagonal mirror ensure the stable installation and use of the eyepiece; not easy to fall off
• 99% high reflectivity; telescope accessory have large amount of light transmission; good imaging effect

• The 60 degree wide Angle SV113 eyepieces offer a quality 4-element Plossl optical design at a super affordable price;
• WA wide-angle field of view, comfortable observation,True FMC coating process: ultra-high transmittance broadband coating on the lens surface;
• Matting treatment: the edges of the lens are blackened, and the internal structure of the structure is matted to eliminate stray light;
• All-aluminum alloy surface is sandblasted with satin oxidation, and the hand-held rubber design is more humanized;
• Comfortable rubber eyewear design,Standard filter thread design.
  
  

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

• Standard 1.25" tube eyepiece fits any 1.25" telescopes and telescope accessories astronomical equipment. M28.5x0.6mm filter threads;
• 40-degree field of view plossl eyepiece provides a wide field of view, allows you to observe the interior of bright nebula makes acquiring and centering objects of interest a breeze;
• Full multi-layer coating reducing light loss. FMC telescope eyepiece allows you to image clearer and brighter in low-light conditions;
• Black edges and black interior of the eyepiece are black-treated to reduce stray light scattering and maximize contrast;
  25mm focal length eyepiece provides moderate magnification for observation of lunar planetary binaries;
• Sturdy plastic housing protects eyepieces from dust and moisture;
• Anti-slip rubber grip ring, grip on the rubber ring protrusion, enhance friction, effectively prevent the eyepiece from falling off.

• Electron beam gun evaporation with Ion assisted deposition coating technology for durability and resistance to scratching;as well as stability on CWL (central wavelength) no deviation affected by temperature change
• Planetary rotation system offers precision and homogeneity of coatings ensuring high value on transmission of pass-band and Optical density of off band
• 90% transmission of main nebula emission lines;such as Ha 656nm;OIII 496nm;500nm;SII672nm and H-beta 486nm
• 0.1% transmission of off-band;specifically the major emission lines of artificial light pollution;such as Na 589nm;Hg 435nm and 578nm
• Suitable for color CCD cameras and unmodified DSLR Urban optical filter can effectively suppress urban harmful light and improve the contrast of shooting target

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.

• 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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• SV207 1.25-inch spl eyepiece is suitable for observing the moon and planets, which can meet your basic observation needs;
• Fully multi-coated green film eyepiece lenses help achieve a clearer, brighter, higher contrast view;
• The edges of the lenses are treated with black to reduce the scattering of stray light and maximize contrast;
• SV207 1.25" Plossl eyepiece has 2 sets of 4-piece optical structures. Standard M28.5X0.6 thread specification, supports standard 1.25-inch filter adapter installation.

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• The illuminated crosshairs eyepiece is precisely located in the center of the eyepiece field of view; providing accurate results that allow you to easily track the guide;
• Wide 70-degree apparent field of view makes acquiring and centering target objects a breeze; comfortable 16mm eye relief So you do not have to worry about the goal disappearing quickly;
• Brightness adjustable function; which has relatively low energy consumption at lower brightness; which can extend the life of the illuminator; with a crosshair for illumination;
• The standard 1.25-inch filter thread is compatible with all 1.25-inch standard equipment; the threaded extinction inside the eyepiece can well suppress the reflection of internal stray light; giving you a bright high-contrast view;
• Perfectly guided astrophotos; The crosshairs for easier use and alignment; excellent for accurate polar and go-to alignment;
• Fully multi coated broadband green optics with superior optical performance; clarity is great.

• The SV152 crosshair eyepiece is ideal for guiding astrophotos when used in off-axis guiders or guide scopes. The illuminated crosshairs eyepiece is precisely located in the center of the eyepiece field of view, providing accurate results that allow you to easily track the guide;
• The SV152 cross-eyepiece has a wide 70-degree field of view, making it a breeze to acquire and focus on target objects;
• Comfortable 16mm eye relief means you don't have to worry about your target disappearing quickly;
• This SV152 illuminated single reticle eyepiece has adjustable brightness. Relatively low energy consumption at lower brightness can extend the life of the illuminator;
• The standard 1.25" filter thread is compatible with all 1.25" standard equipment. The thread matte inside the eyepiece can well suppress the reflection of internal stray light, giving you a bright high-contrast view.

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.

• SVBONY 1.25-inch Prosser eyepiece is suitable for observing weak-light and dim celestial bodies such as nebulae, star clusters, comets, etc. The field of view is clear and bright, and observation is comfortable;
• Adopting true FMC full-bandwidth multi-layer coating, ensuring that each glass surface has multiple layers of coating for better image quality and the edge of the lens is matt blackened to prevent stray light interference for bright and clear views;
• M28.5*0.6 standard thread size, supports standard 1.25-inch filter adapter ring installation, with wide applicability. Standard Prosser eyepiece structure: 2 groups of 4 optical structures to ensure observation effect;
• 19mm shooting distance, convenient for long-term observation without fatigue. The inner wall of the foot cover has two matte threads, and the outer wall is chrome-plated, with a bright and smooth appearance;
• All-metal mirror structure, delicate texture, fine workmanship. Humanized environmentally friendly rubber anti-slip ring design to prevent accidental crushing.