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SVBONY

SVBONY SV503 Telescope, 102ED F7 Extra Low Dispersion Achromatic Refractor OTA, Micro-Reduction Rap Focuser, for Astrophotography

    • Based on 231 reviews
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$649.99 Why this price?
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Availability: Only 4 left in stock, order soon!
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Arrives Sunday, May 5
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Size: 102mm


Features

  • 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

Brand: SVBONY


Optical Tube Length: 630 Millimeters


Eye Piece Lens Description: Barlow


Objective Lens Diameter: 102 Millimeters


Telescope Mount Description: Equatorial Mount


Product Dimensions: 24.77"D x 7.07"W x 8.64"H


Focus Type: Manual Focus


Power Source: Adapter


Finderscope: Reflex


Item Weight: 12.13 Pounds


Product Dimensions: 21.65 x 6.3 x 7.87 inches


Item Weight: 12.13 pounds


Item model number: FCAF9359D


Date First Available: March 23, 2021


Manufacturer: SVBONY


Country of Origin: China


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, May 5

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

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Top Amazon Reviews

    • Fantastic Telescope, Incredible Price!
Size: 80mm
Review Image by Z-Field Z-Field
Review Image by Z-Field Z-Field
Review Image by Z-Field Z-Field
Review Image by Z-Field Z-Field
Review Image by Z-Field Z-Field
Review Image by Z-Field Z-Field
Peek into the home of any advanced amateur astronomer and you’ll be surprised not only at the number of telescopes but that there will almost always be an 80mm telescope and you might be more surprised that it is the most used. Every telescope has its advantages and the 80mm is a perfect size for taking wide area images of the night sky. Many objects in the sky are actually quite large and require a small telescope to image, see the image of the North American Nebula attached. An 80mm is also the perfect “Grab and Go” telescope for when you want a quick view of something but don’t want to setup the “big” telescope. Every astronomer has a small telescope they can use on a tripod when they want a quick look at something. I’ve had this telescope a little over a week now and I’m quite impressed. If you are just starting out this is a telescope you can grow into and not out of. It is light weight, only 6.3 pounds, and will be at home on a tripod as on a telescope mount. For the more advanced amateur, this telescope is an astrophotographer’s dream! The image below is of the North American Nebula and though you can see some coma near the corners, it has over a degree of tack sharp star images. The image of the Galaxy M101 was taken a few nights later with a HoTech SCA Field Flattener and has over a degree and a half of coma free area. These were taken with a cooled IMX294 camera and is a stack of 70 two minute exposures stacked and processed in PixInsight. It was taken from a light polluted suburb of Dallas during full moon, the North American Nebula was with an Optolong l-eNhance filter and shows what can be done with a good telescope even from a big city. For those just starting out getting an image this good can take some time. The image of the Moon is a composite made from two images taken with the SvBony SV305 camera then stitched together for the full image. It created some excitement on Facebook as it shows a lot of detail you would not expect from a telescope of this size. The image of Venus was also taken with the SV305 camera. The third image of the solar prominence was taken with a 4x Powermate Barlow, a Daystar Quark Hydrogen-Alpha filter and a QHY174GPS camera. It was a composite of two images, one of the prominence and the other of the sun’s surface. The camera was monochrome so color was added. This telescope is a solar and lunar imaging machine! WARNING: Do not use to view the sun without proper filtering as permanent damage can occur to your eyes or equipment! Who should get this telescope? Those in astrophotography who need something with a wider field of view, people wanting to view the sun (be sure to use an approved solar filter) and the moon. You can also see star clusters, nebula and some larger, brighter galaxies. You can certainly view the planets through this telescope, but the short focal length makes it better for wide field objects. If you are a beginner and are looking for a good telescope that you can use later for astrophotography then this is a great scope to start as you will not outgrow it. You should note that the telescope only comes as an Optical Tube Assembly, you do not receive a star diagonal, eyepiece or finder. That is typical of high end astrophotography telescopes. If you are just beginning you will need a SVBONY 2 inches 90 Deg Dielectric Mirror Diagonal, a set of eyepieces, a red dot finder and base, and a large tripod or telescope mount (iOptron SkyGuider pro, iOptron CEM40 or Celestron VX mount for example). I would recommend also buying a 2” extension tube such as the Orion 5124 2-Inch Telescope Eyepiece Extension Tube or the Explore Scientific Rack and Pinion Focuser 2" Extension Tube - ESRPEXT2 if you want to do astrophotography. I found only one minor complaint and that is the focuser. Unlike the description, it is not a Crawford style, but a rack and pinion, the latter being the standard for most telescopes. That isn’t a big deal, but for astrophotography a Crawford is preferred. The focus is a bit spongy, but still quite usable. I was able to add a motorized focuser and, while there was some image shift while focusing (as is usual with all rack and pinion focusers), it was still easy to reach a good focus. The image of the North American Nebula was focused by hand. Like almost all astrophotography refractors, an extension tube (mentioned earlier) is needed when using a camera. Not a big deal, but it would have been nice to have it included. I was able to compare this telescope to another 80mm ED f/6 scope from another company that costs twice as much. The SV503 was as good if not better in almost every respect. The image in the SV503 was brighter, even though it is an f/7 and the other scope was an f/6. The only reason might be that the other scope has three lens elements while the SV503 has two and that resulted in more light being absorbed. Still, it was surprising. Both telescopes had about 1.1 degrees of coma free field of view. The SV503 was lighter than the other but was a bit longer. Both telescopes had a way to rotate the focuser to allow for better framing with a camera, but the SV503 was much smoother and had a better locking mechanism than the other telescope. Both had rack and pinion focusers and both had similar focusing characteristics. Between the two the SV503 was the clear winner even without the cost differential. Pros: 1. Incredible price, about half what other 80mm ED telescopes sell for 2. Perfect for beginners and advanced amateurs alike 3. Bright, wide images, superb telescope for astrophotography 4. Tack sharp over 1.1 degree, even more with a field flattener 5. Focuser rotation is super smooth Cons: 1. It is listed in the description as a Crawford focuser, but it is Rack and Pinion. It still works quite well. 2. Focus extension tube not included. Not a big problem. Should you buy this telescope? Definitely! In fact, the friend I had help with the image of the North American Nebula and M101 likes it so much he buying one for himself. ... show more
Reviewed in the United States on May 15, 2020 by Z-Field Z-Field
    • GREAT VALUE !
Size: 70mm
Great scope for Astrophotography beginners. It is well constructed and made solid. It's compact. Easy to breakdown, pack it up and move around. However, I only had once chance to use it since received. Mostly cloudy nights, not good for observations. During the one night used, it performed great with my onboard planetary software, PHD2, Sharpcap and CDC. I was able to capture the M42 briefly as a test run. It turned out well for the first time. This is a great scope considering the cost. I was looking for something that wouldn't break the bank. I'm totally satified with it. I went further installing the ZWO EAF auto focuser. It works great and perfect match for the scope, easy to install. The ZWO ASI533 mc pro camera is compatible with the scope. Perfect match. I highly recommend this scope for beginners, like me! ... show more
Reviewed in the United States on November 9, 2023 by Ray M.
    • Amazing value for the money for both beginners and pros
Size: 80mm
Review Image by NewEnglander NewEnglander
Review Image by NewEnglander NewEnglander
Review Image by NewEnglander NewEnglander
Review Image by NewEnglander NewEnglander
Review Image by NewEnglander NewEnglander
Review Image by NewEnglander NewEnglander
Review Image by NewEnglander NewEnglander
First and foremost SVBONY, Please do NOT raise the price of these! You will sell a ton of them, just keep this quality and I will be a frequent buyer for your astronomy gear! Ok, I didn't want to review it, before I did some test imaging done. First impressions: + Very nicely made, appreciate the built-in rotator with the tightening screws. I don't see this on telescopes with much higher price tag, it's usually an add-on accessory. + Feels sturdy, although I did go through all the screws to make sure they are all tight, a few was a bit loose. + The Focuser is like butter, very nicely made, I like the bottom knurled-screw to loosen or tighten the focuser. + The dew shield is nice and tight, I had issues with other brands, that the dew shield slides back down too easily. This has just the right amount of tightness. +Lens is great! (See images) I don't see much chromatic aberration at all. Those who don't know what that is, that lens in the scopes bend the light to focus into your eyepiece and lesser quality lens tend to create this rainbow color halo around stars and shiny objects, because the lights in the spectrum don't exactly focus into a tight spot. This is usually corrected with another piece of lens (those scopes called apochromatic triplet telescopes) , but so is the price go up, way up. For this telescope with only a doublet lens, it's doing fantastic! - For negative- the dovetail mount on the telescope is a bit too small. It deserves a much larger one, but I won't complain too much, because we're talking about the price and I don't mind buying a larger footprint mount for it. Now, let me share some images I took, both very short amount of exposure time, since the clouds rolled in early. For the rest of the equipment I used here it is: Mount: EQ 6R-Pro Guiding : No guiding done, I haven't really set up, I have some hardware/software conflicts to fix with my guiding camera vs main camera. Focuser: Sesto Senso 2 Autofocuser (recent addition) Camera: ZWO ASI533 Pro Software used: - EQMOD (to connect to the mount) +ASCOM drivers -SharpCap Pro (for live stacking- see image) -N.I.N.A - night imaging software (see whirlpool galaxy) -Siril - stacking software (to stack sub frames into one image) Photoshop - To correct stacked image (noise, cropping, brightness/saturation etc) Image properties: Whirlpool Galaxy = 19 minutes 19x60 seconds (!!!) I had the clouds rolled in Bode's Galaxy+ Cigar Galaxy = 41x30 seconds, live stacked and manually stretched in SharpCap and saved as is. No other adjustments made. ... show more
Reviewed in the United States on April 1, 2021 by NewEnglander NewEnglander

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