• Dual focus; the dual focus design effectively saves focusing time; can quickly see the fine details of distant targets; improve viewing effect; and the focus is stable and accurate;
• Large objective lens; 100mm objective lens gathers more light; bright field of view even in low light outdoors; allows you to see clear bird images in the evening;
• 25-75x magnification; SV406 spotting scope has 25-75x different magnifications; meet your observation needs at different distances; help you see the details of distant targets;
• Twist up eyecups; whether you wear glasses or not; the retractable eyecup design can provide you with a comfortable viewing experience; at the same time relieve your fatigue from prolonged viewing;
• Waterproof fogproof;the waterproof fogproof design allows you to use it in different weathers; but can’t soak in water for a long time; extendable sunshade built onto the main barrel to reduce glare;
• FMC coating; fully multi-coated lens can restore the authenticity of color; 7pcs/4groups lens increase light transmission; give you clear and sharp images;
• Large field of view; 100mm objective lens provides a field of view at 90-48ft/1000yard; at the same time retractable sunshade can block strong light.

• 1.25" diameter; SV223 diagonal adapter can be combined with 1.25" eyepieces and barlow lens; suitable for any 1.25" telescope accessories;
• Stable installation; the SV223 dielectric mirror has a clicklock locking mechanism; which can realize ultra-fast clamping action and ensure the stable installation and use of the eyepiece; SV223 star diagonal not easy to fall off
• Image is clear and bright; High precision 11.5mm thick mirror substrate flat for optimal image stability. the SV223 dielectric mirror is equipped with a thick precision optical flat mirror with an enhanced 99% reflective dielectric coating; which has a large amount of light transmission and a good imaging effect
• High-quality aluminum material; internal antireflection baffling for highest contrast; which is light and stable; ensuring that the star diagonal is durable and can reduce the weight of the equipment without affecting the balance of the equipment
• Enhanced Protection Features: Internal safety stop prevents barrels from hitting the mirror. Stainless Steel compression rings (both on diagonal and adapter) to prevent barrels from marring.

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SV503 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. The main objects of prime focus photography are nebulae, clusters and galaxies.This can be achieved by matching the SV503 set with the M42 camera ring.

Set Includes:

• SV550 80APO OTA, SKU: F9381A
• Fully Metal Telescope Eyepiece Adapter, SKU: W2811C 

Here are the cameras you can choose from:

• SV305 Astronomy Camera, SKU: F9198A
• SV305 Pro Camera, SKU: F9198B
• SV305Pro AR Coating Astronomy Camera, SKU: F9198C
• SV305M Pro Astronomy Camera, SKU: F9198D
• SV505C Color Planetary Camera, SKU: F9198H
• SV705C Planetary Camera, SKU: F9198J
• SV605CC OSC Camera, SKU: F9198K 
• SV405CC Cooled Color Camera, SKU: F9198F

• 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

• 1.25-inch aperture; SV222 45 degree diagonal is 1.25-inch aperture; strong versatility; can be applied to 1.25-inch eyepieces and astronomical accessories
• The image is clear and bright; correct image diagonal adopts a 45-degree upright prism; with full multi-layer coating and phase coating; the image contrast is high; the picture is clear and bright
• Delustering design; blackened and baffled inside; it can prevent internal stray light reflection
• Metal material; 1.25 inch SV222 telescope diagonal is made of aluminum alloy metal material; with black anodizing; sturdy and durable
• The installation is stable; brass pressure ring design; SV222 45 degree diagonal is firmly connected with the eyepiece and does not shake; it will not scratch the eyepiece

This SV503 set connected for CMOS astrophotography,give you more playing methods,let's try it now,any questions,contact us freely!

• 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.

• Enhanced Aluminum Die; the SV221 diagonal mirror is designed with enhanced aluminum mold; which has higher light transmittance and clearer vision;
• 1.25 inches diameter; the diagonal has a diameter of 1.25 inches; which can be applied to a 1.25 inches telescope and a 1.25 inches eyepiece;
• With a brass pressure ring; the telescope diagonal 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 has M28.5x0.6mm filter thread; which supports the connection of 1.25 inches filter;
• 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 correct image prism diagonal has internal extinction treatment; and the acquired image is clearer and brighter.

This sv503 set connected for Eyepiece Projection astrophotography, Not include eyepiece,you can choose eyepiece from svbony website.

• SV213 3x Barlow lens triples the magnification of all 1.25 inches astronomical eyepieces, and very suitable for various short focal length telescopes;
• All optical glass surfaces have multi-layer coating. The 3-element air space design can eliminate color difference, so that you can enjoy a clearer, sharper and more real vision;
• The housing is precision machined from aluminum stock and black anodized to a hard finish;
• The Barlow lens has a compression ring that doesn't leave any marks on cameras or eyepieces;
• The SV213 Barlow lens optical components are detachable, which is convenient for daily cleaning to keep the lens clean.

• The SV216 Barlow lens adopts a 4-piece telecentric design, which effectively prolongs the focal length of the primary mirror without introducing chromatic aberration and vignetting problems that bother users. Offers excellent spherical aberration control, resulting in a flatter field of view than standard Barlow lens;
• The magnification of the SV216 Barlow lens is constant at 2 times. the 4-piece design of the Barlow lens and the optimized optical structure ensure that the magnification factor of the Barlow lens remains unchanged no matter where the Barlow lens is installed in the optical system;
• SV216 2x Barlow lens adopts 3 screws design and coaxial locking device. Improving the concentricity of the optical axis of the system can significantly improve the quality of captured images;
• The 4 lenses of the SV216 Barlow lens are fully multi-layer enhanced coating, which makes the picture bright and sharp. The edges of the lens are blackened to eliminate internal light scatter to maximize image contrast;
• The low magnification eyepiece is matched with the SV216 telecentric 2x 4-element Barlow lens, which can enjoy the magnification effect of the high magnification eyepiece while the eye relief distance is still within the comfortable observation range of the human eye.

• High definition photography; bird feeder can capture 4-mega pixel high-definition photos and 1080P high-resolution video; even in low light; you can take high-definition color images;
• Night vision function; you can capture clear black-and-white images and videos within 6m through infrared LEDs even at night
• AI intelligent recognition; it can automatically identify 11000 species of birds; the camera will automatically identify and record videos; identifying birds and learning bird knowledge;
• 2L capacity; the capacity of the food trough is 2L that can store enough food; so you don't need to add bird food as often
• Built-in 5000mAh battery; it can run on standby for about 3 months under normal circumstances; 3W solar panel charges the battery; no need to worry about power issues;
• Large memory; support the installation of 8-128G memory cards; convenient for you to upload to social media platforms; he images and videos automatically be saved in the card;
• 2.4GHz WIFI connection; the camera only supports 2.4GHz WIFI; not 5GHz WIFI; you don’t need to worry about signal loss and missing a moment of your bird visitors.

• SV209 is a special field flattener for SV550 80F6 OTA, which can effectively improve the image quality problem of SV550 OTA fringe field curvature; At the same time, the focal length and focal plane position of the primary mirror remain unchanged;
• The package of SV209 is equipped with an M63 extension tube and an M48 adapter ring to ensure that the back focal length of the flat field mirror is the astronomical conventional 55mm length;
• The effective field of view of the 45mm large target surface supports not only half-frame cameras; but also full-frame cameras;
• Built-in 2-inch filter mounting thread; supports 2-inch filter installation; customers do not need to buy a filter adapter ring separately;
• Maximum working distance from the M63x1 internal thread: 103 mm - space enough for almost all adaptations.

Note: The SV550 80 APO is designed with f/6 focus ratio. When reducing the focus further, the image quality will not be guaranteed. This is why we produce 1.0x flat field instead of 0.8x.

Set includes:

• SV503 70ED F6 refractor, SKU: F9359A
• SV182 6x30 Straight-Through Metal Finderscope, SKU: W9141A
• Universal Dovetail Slots, SKU: W2370A
• SV188P 90 Degree Dielectric Mirror Diagonal, SKU: F9171B
• SV207 1.25inch 8/15/25mm eyepieces, SKU: W9158A-W9158B-W9158C

• 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.

Learn more

• SVBONY cellphone holder connects a cellphone to an astronomical telescope, the holder fit all 0.965" telescope, eyepiece, most 1.25'' eyepiece, 23.2mm microscope eyepiece and small binocular/monocular eyepiece: For eyepiece diameter within 0.94-1.5inch / 24-38mm;
• Fit to many cell phone models: For cell phone width within 2.36-3.74inch / 60-95mm;
• Compatible with many optical devices: you can use it to connect your phone to a telescope, a microscope, a spotting scope, a binocular or a monocular;
• Adjustable holders: 360°rotating phone holder;
• The Phone is fixed foam friction to prevent your phone from being scratched or damaged.

• 40-2500X magnification; the compound binocular microscope offers 6 magnification levels; micron-level magnification can clearly observe bacteria and viruses cell structure of bacteria; protists; etc;
• 2 power supply methods; battery power supply （3 AA) and 5V1A power interface; two power supply methods can solve your various indoor and outdoor uses;
• Achromatic objective lens; immersing the 100X lens in cedar oil for observation can greatly improve the clarity of image details; and is used to observe finer structures such as chlamydia; bacteria; and organelles;
• LED light; single-bulb LED lighting built into the bottom of the binocular biological microscope, intensity adjustable; transmitted (lower) LED light can be used to view translucent specimens from below;
• Professional binocular head; the microscope equipped with 10X and 25X widefield eyepieces with 53 to 77mm inter-pupillary adjustment; the right eye of the binocular head has diopter adjustment;
• Double-layer mechanical stage; X Y double-layer loading platform for small items need to observe different locations moderate ideal design; allows you to operate the loading table more convenient and precise; dual focusing knob; coarse focusing knob and fine focusing knob;

Note: SM201 uses 33mm Rheinberg illumination filter. It can meet your photography needs ; and it can also connect to computer with SV189 microscope camera.

• SV41 Mini mak spotting scope come with tripod;which folds to less than a foot long and weighs almost nothing;would be a good tabletop tripod for small cameras;a nice soft case that covers the scope completely;including a lens cap and eyepiece cap that makes it feel very safe and secure;
• Compact and portable design mini maks;compact so it is easy to transport and set up;feels great in the palm of your hand;compact enough to fit in the range bag;small powerful easy to transport;light enough to use on fairly small tripods or window mounts;
• 25-75X magnification; variable magnification focusing; easy to zoom in or zoom out; suitable for target shooting;
• 5pcs 3 groups zoom eyepiece telescope;Bak4 Prisms that maximizes light transmission;fully multi coated optics for superior brightness large eye lens for comfortable viewing;no false color no image shift during focusing and no tube currents even taking the scope outside to observe immediately in freezing temperatures;
• Mini mak spotting scope come with tripod;which folds to less than a foot long and weighs almost nothing;would be a good tabletop tripod for small cameras;a nice soft case that covers the scope completely;including a lens cap and eyepiece cap that makes it feel very safe and secure.

SVBONY SM202 portable monocular compound microscope has 80x - 2000x magnification and it can magnify microbial targets to the micron level,it also has the mechanical caliper stage and portable arm handle design to meet your observe needs.It is a good choice for agricultural application.

• Flat field eyepiece; offer corrected field curvature; you will observe an image not just in the centre but right out to the outer edge;
• Clear image; fully multi-coated and blackened lens edges to reduce reflections; 8 lens 5 groups give you an image of high colour purity and excellent contrast;
• Comfortable; 65° wide field of view keeps stars planets and lunar details in focus across the field of view; 20mm eye-relief is ideal for long intensive observing sessions;
• Eyecup; folded-up eyecup fit for glasses wearers or not; removing eyecup has a m42x0.75 thread for astrophotography;
• 18mm eyepiece; medium power eyepiece for a bright, low power view of the moon and most all deep-sky objects.

• SV190 eyepiece paired with the SV503 telescope and the SV188P diagonal is ideal for deep sky visual;
• Ultra flat field eyepiece; SV190 eyepiece can achieve the purpose of correcting the defects of field curvature and improving the imaging quality at the edge of the field of view;
• Achieve clear imaging; eyepiece optics are fully multi-coated; full multi-coated lenses for sharp imaging;
• SV190 telescope eyepiece provides a 60-degree apparent field of view and 16mm of eye-relief; the eyes will not feel uncomfortable when watching for a long time;
• Blackened lens edges; SV190 ultra flat field eyepiece feature blackened lens edges for maximized light transmission and excellent contrast;
• Fold down eyecup; soft rubber eyecup can be folded down from the edge; it's friendly for people who wear eyeglasses;
• Compatible with SV406P; adapt to the SV406P plug-in bird watching scopes; providing you with more possibilities for bird watching.

The SVBONY Helical Focuser allows for precise focusing of eyepieces or cameras. It is ideal in connection with a guide scope and a guide-camera. such as SV165 series mini guide scope. The focuser features a female T2-thread on the telescope side, while allowing the attachments of 1.25" equipment on the eyepiece / camera side. In addition, there is a male T2 thread on the camera side. During focusing, the attached accessories keep their orientation and don't rotate. The exact focus position can be fixed with a clamp screw.