• 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 with excellent resolution; 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.

• 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
• 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

The product corresponding to the SKU is as follows:

• SA401 25-75X100 APO Spotting Scope, SKU: F9375B
• SC311 WIFI Camera IMX662 , SKU: F9384A
• SA406 1.25inch adapter, SKU: W9170A

Note: SA401 comes with an eyepiece

• 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 SVBONY Narrowband OIII filter is designed for nebula observation allowing 5nm bandwidth of light centered on a wavelength of 500.7nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high- and low-pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere;
• OIII 5nm 2" Filter is designed to deliver 90% transmission at the 500.7nm line which provides you with well defined nebulae structures;
• 300-1000nm wavelength range; the SVBONY OIII 5nm 2" Filter transmits a 5nm bandwidth of light that is centered at 500.7nm;
• 2 inch mounted; the filter can thread directly into the 2 inch barrel of your telescope eyepiece.

Note: This OIII filter is NOT for use on the Sun, and also unsuitable for telescopes with a focal ratio below f/4 

• 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/4

• SVBNOY H-Alpha 5nm 2" Filter blocks the transmission of contrast-killing light pollution wavelengths; improve contrast and detail;
• This H-Alpha filter also blocks infrared wavelengths from 700nm to 1000nm so you don't need a separate IR-Cut filter
• Allowing 5nm bandwidth of light centered on a wavelength of 656.3nm to pass through; 90% transmission;
• Astrophotography under a light-polluted night sky can be difficult; the solution is an H-alpha filter; the H-alpha cut-off filter works to filter out a large part of this light pollution;
• 2 inch mounted; the filter can thread directly into the 2 inch barrel of your telescope eyepiece.

Note: This OIII filter is NOT for use on the Sun, and also unsuitable for telescopes with a focal ratio below f/4

• 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 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; binoculars for adults 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;
• Twist-up eyecups; SA205 binoculars give you a comfortable experience; it allows you to customize the eye relief to obtain a full field of view with or without glasses.

Enhance your SV503 80 experience with our recommended accessories! Introducing the SV193 flat field flattener/focal reducer, versatile multifunctional dovetail slot, and SV211 telescope handle bar for added convenience. But wait, there's more! Customize your setup with our hot-selling SV220 2inch dualband narrowband filters and SV172 PWM function 430mm dew heater strip.

Explore the perfect combinations in bundle1, bundle2, and bundle3 for a truly optimized astrophotography experience. Upgrade your SV503 80 today and capture the stars like never before!

Set includes:

• SV503 102ED Telescope, SKU: F9359D
• SV193 focal reducer, SKU: W9152D
• SV211 handle bar(screws and mout screws inside), SKU: W9163B
• SV188P 90 Degree Dielectric Mirror Diagonal, SKU: F9171B

This SV503 telescope combination set includes a 102mm ED F7 refractor telescope, a SV223 90 degree diagonal mirror, a SV182 6x30 right-angle correct-image optical finder scope, a SV211 203mm saddle handle bar and a universal dovetail base. It is a suitable telescope visual set for astronomy.

• This dual narrow band telescope filter properly designed for astrophotography both in light polluted environment;
• Take color images without needing to combine images with multiple filters. 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.

The product corresponding to the SKU is as follows:

• SV46P 20-60x80 ED Spotting Scope, SKU: F9339A
• SV205 Electronic Camera, SKU: F9159C
• SV105 Planetary Camera, SKU: F9159B
• SV123 Spotting Scope Adapter, SKU: F9194A
• 1.25 Inch Adapter, SKU: F9164A

The product corresponding to the SKU is as follows:

• SA401 20-60x85 Spotting Scopes, SKU: F9375A
• SA407 Photography Kit Adapter, SKU: W9171A
• T-Ring Adapter for dslr Cameras, SKU: W2054A/W9153A/W1077A

Note: SA401 comes with an eyepiece

The product corresponding to the SKU is as follows:

• SA401 20-60x85 Spotting Scopes, SKU: F9375A
• SC311 WIFI Camera IMX662 , SKU: F9384A
• SC001 Wifi Camera, SKU: F9373A 
• SA406 1.25inch adapter, SKU: W9170A
• SA402 Travel Tripod, SKU: W9159A 
• SV214 Pro Phone Adapter, SKU: W9176A-W9177A 

Note:SA401 comes with an eyepiece

The product corresponding to the SKU is as follows:

• SA401 25-75X100 APO Spotting Scope, SKU: F9375B
• SC001 WIFI Camera , SKU: F9373A 
• SA406 1.25inch adapter, SKU: W9170A

Note: SA401 comes with an eyepiece

• This SVBONY seven-piece accessory kit includes two high-quality 1.25" Plossl eyepieces, a 2xBarlow lens that can be used visually or photographically, three eyepiece filters and a Portable bag;
• With two extra eyepieces and a Barlow lens, you'll have four different magnifications to choose from;
• A Moon filter Perfectly neutral color will not alter the natural color of the Moon, Enhances the contrast of the moon and planets in photographic images;
• A ND4 25% light transmission Reduces brightness and cuts glare, increasing clarity of the Moon, Venus, and bright double stars;
• The #82A Color filter has uses on The Moon and most planets, enhancing regions of low contrast but without the cost of reducing the overall brightness of the object being observed;
• A portable bag keeps everything safe in the foam-lined interior.

• 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.

• The objective lens of the OTA features an S FPL-51 extra-low dispersion glass ED element, which virtually eliminates chromatic aberration. This results in the best color correction for an ED doublet lens.
• The 0.8 times defocusing system shortens the exposure. It can meet the needs of astrophotographers who need sufficient exposure in a short time.
• With advanced refractor, it can take dazzling celestial photos without worrying about the distortion of the star points on the edge of the photo.
• SV182 Finder Scope with 90-degree viewing angle lets you view a more comfortable and convenient operation compared to a traditional straight-through viewing finder.

This SV503 102ed doublet refractor Telescope Set is suitable for astronomical visual observation.

Visual Set-1 includes: SV503 102ed OTA, SV211 handle bar, SV182 right-angle star finder, SV188P 1.25" diagonal, 2x barlows, 6-20mm 1.25" 68-degree UWA eyepiece set, and universal dovetail slot.

Visual Set-2 includes: SV503 102ed OTA, SV211 handle bar, SV182 straight star finder, SV188P 1.25" diagonal, 2" extension tube 75mm, 2x barlows, 6-12-25mm 1.25" plossl eyepiece set, and universal dovetail slot.

Visual Set-3 includes: SV503 102ed OTA, SV211 handle bar, SV182 right-angle star finder, SV188P 1.25" diagonal, 6-9-15-20mm 1.25" 68-degree UWA eyepiece set, and universal dovetail slot.

• 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.

Get the 0.8x Reducer & Flattener for SV503 102ED

• Extra-low dispersion glass; SV503 Telescope OTA is designed with ED glass; will give you the crystal clear image; SV503 80ED telescope produces an especially colour true and high contrast image; just right for more discerning observers;
• Dual-speed rack and pinion focuser; the gear ratio of the dual speed 2-inch toothed focuser is 1: 10; which makes it easy to achieve accurate focus;
• Top-quality material; the appearance of the SV503 OTA is baked with high-end fine-grained paint; with exquisite appearance and delicate feel; all machined by CNC;
• All optical surfaces multi-coated; the whole optical lens adopts the technology of ultra-wideband multilayer coating; 80mm aperture; fully multi-coated ED optics deliver outstanding views; day or night;
• Areas of application; SV503 80mm F7 astronomy telescope SV503 would be better begin for astronomy amateurs to do astrophotography;

Get 0.8x Reducer/Flattener for SV503 80ED

This sv503 set connected for prime focus astrophotography, can give you more playing methods.

• The popular SV503 80ED F7 telescope refractor will provide the best optical quality, whether you use it for deep-Sky objects or planets, visual or photography.
• The compatible SV193 0.8x field flattener & focal reducer will increase the field of view and improve the image flatness， which is essential for deep-sky photography.
• The SV165 30mm F4 guide scope is very mini and easy to use, widely used in different Astro-observations.
• The side dovetail slot provides you with an easy way to install the finder.