• 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.

• Dual ED objective lens (4 pieces/4 group) ultra-low dispersion optical glass that significantly reduces chromatic aberration; the ed spotting scope presents clear images with good color correction; and enjoy lifelike colors and contrast;
• 100mm large-aperture; improved light collection capabilities; provides wide field of view and support for long-distance observation; allow the spotting scope to display a bright field of view;
• Detachable eyepiece; SA401 spotting scope can be freely combined to achieve a variety of observation methods; and can be compatible with SC001 WIFI camera to download and share photos in real time;
• APO apochromatic; increase the clarity and color restoration of the image; eliminate chromatic aberration for a variety of colors, and make the imaging effect sharp and clear;
• Smooth focus wheel; the scope can accurately capture fast-moving birds; easily adjust the focus; achieve high-speed focusing; and capture moving birds;
• Standard thread interface; use the universal standard ¼-20 tapped hole; 
• Waterproof and fogproof; spotting scope with built-in shading protects the objective from raindrops and snow; avoids sudden environmental changes to damage.

SV202 Binocular 8x42 Portable IPX7 Waterproof is designed with low dispersion ED glass, which can make bright and clear image. 42mm large aperture objective lens can improve the viewing effect more comfortable. 7.5° wide field of view is wider. Right visual refractive adjustment, adjust visual balance, easy to observe. Lift the eye caps to eliminate stray light and make the image purer, which is Easier for users who are wearing glasses.

If you need a flat-field binoculars, you can choose SA205 10x42 ED Flat-field Binoculars.

• 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.

• 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 bundle includes SVBONY SV202 ED binocular and SA206 night vision binocular.

• SV202 8x32 ED Binoculars, SKU: F9351A
• SA206 Night Vision Goggles, SKU: F9394A

• 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.

Review Video by @NebulaPhotos   Unboxing Video

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• 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

• SV550 80mm f/6 fully multicoated triplet apochromatic optics using an ED center element;
• A dual-speed 2.5" rack-and-pinion focuser with 10:1 ratio fine focusing,realizes reliable zero offset image focusing;
• Retractable lens shade/dew shield;
• Dual hinged split tube rings with a 180mm Vixen-style dovetail.

This SV503 80/102ED Telescope Bundle Set includes

• SV503 ED series refractor OTA
• SV188P 1.25inch diagonal
• SV191 7.2-21.6mm zoom eyepiece
• SV182 finder scope
• 1.25inch Moon filter

• Extra-Low Dispersion ED Glass reduces chromatic aberration which causes color fringing and produces a cleaner and brighter image;
• Large field of view; 42mm objective lens provides a field of view at 394ft/1000yards;
• IPX7 waterproof through nitrogen-filled internals to handle the most extreme weather conditions; ensuring you can watch uninterrupted views;
• Premium coatings provide a high light transmittance across the entire visible light spectrum; guarantee a bright; sharp image even in twilight conditions by maximizing transmission of fading light;
• High-quality Magnesium alloy body allows a long term use;
• Large central focusing wheel for easy focusing; easy to operate; just turn the focusing knob to get clear and sharp images;
• Diopter adjustment; eyepiece built-in diopter adjustment lens; can adjust the visual balance of both eyes; easy to observe the target.

• Extra-Low Dispersion ED Glass reduces chromatic aberration which causes color fringing and produces a cleaner and brighter image;
• Large field of view; 42mm objective lens provides a field of view at 394ft/1000yards;
• IPX7 waterproof through nitrogen-filled internals to handle the most extreme weather conditions; ensuring you can watch uninterrupted views;
• Premium coatings provide a high light transmittance across the entire visible light spectrum; guarantee a bright; sharp image even in twilight conditions by maximizing transmission of fading light;
• High-quality Magnesium alloy body allows a long term use;
• Large central focusing wheel for easy focusing; easy to operate; just turn the focusing knob to get clear and sharp images;
• Diopter adjustment; eyepiece built-in diopter adjustment lens; can adjust the visual balance of both eyes; easy to observe the target.

• Extra-Low Dispersion ED Glass reduces chromatic aberration which causes color fringing and produces a cleaner and brighter image;
• Large field of view; 42mm objective lens provides a field of view at 394ft/1000yards;
• IPX7 waterproof through nitrogen-filled internals to handle the most extreme weather conditions; ensuring you can watch uninterrupted views;
• Premium coatings provide a high light transmittance across the entire visible light spectrum; guarantee a bright; sharp image even in twilight conditions by maximizing transmission of fading light;
• High-quality Magnesium alloy body allows a long term use;
• Large central focusing wheel for easy focusing; easy to operate; just turn the focusing knob to get clear and sharp images;
• Diopter adjustment; eyepiece built-in diopter adjustment lens; can adjust the visual balance of both eyes; easy to observe the target.

• 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

• 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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Set Includes:

• SV503 70ED F6 refractor, SKU: F9359A
• SV229 Solar Filter, SKU: W9183B
• Solar Finder Scope Metal for Sun Positioning, F9168A
• SV211 103mm Handle Bar, SKU: W9163A
• Universal Dovetail Slots, SKU: W2370A

Note: The SV503 70ed is designed with f/6 focus ratio. When reducing the focus further, the image quality will not be guaranteed. This is why 0.8x flat field is not available. If you need flat field for telescope, we suggest choosing SV503 80 f/7 refractor.

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.

Review Video by @NebulaPhotos   Unboxing Video

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The SV503 series includes SV503 80ED telescope refractor OTA and SV193 0.8x flattener & focal reducer. It is suitable for visual observation and deep-sky photography.

The product corresponding to the SKU is as follows:

• SA401 25-75X100 APO Spotting Scope, SKU: F9375B
• SC311 WIFI Camera IMX662 , SKU: F9384A
• SC001 Wifi Camera, SKU: F9373A 
• SA406 1.25inch adapter, SKU: W9170A
• SA402 Travel Tripod, SKU: W9159A 

Note: SA401 comes with an eyepiece

Reviews of SA401-SC311

The product corresponding to the SKU is as follows:

• SA401 25-75X100 APO Spotting Scope, SKU: F9375B
• SA407 Photography Kit Adapter, SKU: W9171A
• SV195 T-Ring Adapter Canon Cameras, SKU: W2054A
• SV194 Adapter for Nikon Camera, SKU: W1077A
• SV196 T2 Adapter for Sony Cameras, SKU: W9153A
• Note:SA401 comes with an eyepiece

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

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

• Correct chromatic aberration; SV231 telescope filter prevents unwanted color banding in the blue spectral range; minimizes blue wavelengths in out-of-focus areas;
• OD＞4; the higher the filter cut-off depth; the smaller the noise and the higher the imaging contrast;
• Full thread design; M48x0.75 specification; male thread; thread is not easy to wear; you can overlay other filter to use;
• AR anti-reflection coating design; transmittance exceeds 95%; improves the contrast and clarity of fast achromatic telescopes, ensures image quality and brightness; obtains more observable light;
• Good performance coating; telescope color correction filter has plasma-enhanced dielectric coatings result in hard; scratch-resistant and waterproof filters;
• 300-1200/NM wavelength; blocking light damage and eliminating blue and purple streaks.

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.