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SV503 102ED Telescope - 0.8x Focal Reducer/Field Flattener Combination

SKU: F9359D-W9152D-
US$

The SV503 series includes SV503 102ED telescope refractor OTA and SV193 0.8x flattener & focal reducer. It is suitable for visual observation and deep-sky photography.

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21 reviews

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Excellent ED optisc & focuser

I have the 102 mm ED verson from Svbony. I have used it for visual observations and photography, it's very very nice for the planets and the Moon (with filter) clearly better than my Bresser 102/1000 mm achromat. It also has an excellent focuser.

Good quality without breaking the bank

I've been using this scope for almost 2 years. Primarily DSO astrophotography with some visual use. I have zero complaints.

Much better optical quality and performance

I own the Svbony 102/714 mm for 6 months now, previosely I had a Bresser 102/1000 mm F10 achromat and the Svbony 102 ED has a much better optical quality and performance. Also the 2 speed focuser is infinitely better than the ones used on simple achromats.

Suitable for planetary photography

I bought this exact OTA a month ago and I tried planetary photography and the results surprised me a lot.

High performance and well-build quality

I bought the SV503 80 and I'm very happy with it's performance and build quality.

This scope will make your astrophotography a real joy

I have the svbony 503 80ED and the sv550 122mm, I started astrophotography seriously at the end of last year.I'm a real fan of the Svbony brand.

Best choice for both visually observing and astrophotography

The SV503 telescopes are awesome for this price-range. And especially the 102mm is the best choice for both visually observing and astrophotography.

Excellent ED doublet refractor

I own this 102ED myself, and I am planning to add a mono camera and filters ouch instead of getting a triplet/APO

Suitable for beginner astrophotography

I purchased the 503 80ED last year after having entered into AP and had no idea what a doublet was. I found that the quality was great considering it was my first refractor.

Awesome little telescope with a small, but annoying design failure

I got this scope a vew days ago. As expected, the quality of manufacturing is at a very high level. Unfortunately I did not yes have the chance to get a first light with the scope, but I am sure it will produce great images. Although, there is a small, but annoying design failure an the focusser in combination with the reducer/flattener. When you unscrew the visual back and attach the reducer/flattener, there is no mechanical stop on the retracted position of the focusser. So it is possible to push the focusser to far into the tube, until the rack and pinion gearing unscrews and the fucousser can fall into the tube! I will make a small 3D-printed washer, to avoid this. Anyhow, good scope! And I hope I can get my first images soon!
Product Name SV503 70F6 ED Astronomy Telescope SV503 80F7 ED Astronomy Telescope SV503 102F7 ED Astronomy Telescope
Type Refractor Refractor Refractor
ED Glass S-FPL51 S-FPL51 S-FPL51
Coating SMC SMC SMC
Aperture 70mm / 2.75-Inch 80mm /3-Inch 102mm / 4.01-Inch
Focal length 420mm 560mm 714mm
Focal Ratio f/6 f/7 f/7
Type of Focuser RAP (Rack and Pinion) RAP (Rack and Pinion) RAP (Rack and Pinion)
Gear Reduction 1:10 Fine movement 1:10 Fine movement 1:10 Fine movement
Resolving capacity 1.97" 1.5" 1.17"
Limit value 11.3 11.6 12.1
Light gathering capacity 100x 130.6x 212x
Max. Useful magnification 140x 160x 204x
Tube weight 3.35kg 3.95kg 5.5kg
Tube outer diameter 88mm 121mm
Tube material Aluminum Aluminum Aluminum
Back Focus Length 90mm 90mm 101.9mm
OTA Length 318mm 465mm 630mm
Dovetail & Ring Yes Yes Yes
Dovetail Length 150mm 137mm 200mm
Model SV193
SKU W9152B W9152D
Back focus 55mm
Barrel size 2-inch 2-inch
Threads Standard M48*0.75 M48*0.75
Lens Structure 3-Elements/2Groups 3-Elements/2Groups
Lens Coating FMC FMC
Blackened Lens Edges Yes Yes
Net Weight 164g / 5.78oz / 0.36lb 177g / 6.24oz / 0.39lb

1. The popular SV503 series refractor will provide the best optical quality, whether you use it for Deep-Sky Object or Planets, visual or photography;

2. The compatible SV193 reducer will increase the field of view and improve the image flatness, which is essential for deep-sky photography.

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