• 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;metal hoop and dovetail; objective focuser wheel cover; a package with die-cut foam insert

Looking for more info on attaching the 0.8x reducer/flattener to the SV503 102mm ED? You can refer to this link:

https://www.svbony.com/sv193-0-8x-reducer-flattener-for-sv503-102ed-refractor/

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• 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;

Looking for more info on attaching the 0.8x reducer/flattener to the SV503 80mm ED? You can refer to this link:

https://www.svbony.com/sv193-0-8x-focal-reducer-flattener-for-sv503-80ed/

• 90 mm aperture; 500mm focal length; compared with 70mm and 80mm; 90mm telescope has more light input and a wider field of view; observe the moon and deep space; which is very suitable for astronomy beginners
• Double speed focuser; the 2 inches rotatable double speed focuser; gear ratio of 1:10; precise adjustability for smooth operation
• The focusing mount with metal interface has higher interface accuracy; guarantees the parallelism of the optical axis; and enhances the observation experience
• Fully multil green coated lens; fitted with achromatic glass for good edge-to-edge viewing; fully multi green coated lens maximize light transmission eliminating false color
• 360 degrees rotation; convenient for photographic composition and visual observation; loosen the screw; the focus can be rotated 360 degrees; you can achieve astronomical shooting

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• Compact and portable: The length of MK105 is 14.84inch,tube net weight is 4.83lb,tube diameter is 4.68inch;For astronomical telescopes with the same focal length; the overall length of the telescope is only about half of that of the refractor telescope; 
• Eliminate the need for periodic collimation: MK105 Maksutov-Cassegrain Telescope exchanges the conventional front corrector plate of a Schmidt with a convex meniscus lens, resulting in a smaller secondary mirror that limits obstruction and increases contrast, while eliminating the need for periodic collimation;
• Metal mirror body: the metal mirror structure for MK105 ensures the stability of the optical structure during transportation;
• Electrolyte coating technology: MK105's secondary mirror coating adopts high-reverse electrolyte coating technology; which greatly improves the imaging contrast of observation targets such as planets;
• The barrel of the MK105 telescope adopts the design of double star-seeking bases; one built-in base and one leaky base; which is convenient for customers to connect more necessary astronomical accessories;

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

Summer Sale! Exclusive discounts, buy now!