Svbony makes a wide variety of telescopes and accessories that range from those that are slightly better than toys all the way to multi-thousand dollar telescopes that are very good. I own several Svbony accessories, including high quality dialectric mirror telescope diagonals that very good for the money. All this is to say that I ordered this telescope with some high expectations tempered by what I thought they could deliver at this price.
Spoiler: Inwas pleasantly surprised. They taken their cheapest telescope, a 60mm refractor that typically sells for under $60, and added a permanent solar filter and a solar finder that works. They also supply a decent 90 degree diagonal in place of the 45 degree diagonal usually supplied with this scope. Not a bad deal for just $10 over the price of the basic scope.
Normally I wouldn’t consider a small scope like this suitable for astronomy, but the sun is a different matter. It’s large enough and bright enough that 60mm is more than enough aperture to provide a good, usable image. The supplied 20mm Kellner-type eyepiece was sufficient to not only get a good view of the solar disk, but to observe several sunspots as well. The tube is all metal, and the focuser is smooth. Setup is easy: Point the scope in the general direction of the Sun and adjust for the smallest shadow cast on the ground. Adjust to center the image in the solar finder, and you’re done. (I tried snapping some photos with my phone, but my images were all overexposed and don’t do justice to the image viewed in the eyepiece.)
If you’re looking for safe beginner’s solar telescope, it’s hard to beat this SV510 solar scope.
Picked this up for the solar eclipse coming up as I imagine most people were and for a one time use device its decent. The filter it has for the sun does indeed work and its nice you can aim this without actually having to look through the scope.
When testing this I first used my phone camera to look through the scope to make sure I wasn't about to blind myself and I am pleased to say the filter works as well as those cheap cardboard throw away solar glasses everyone is selling.
In terms of lens quality its decent, its nothing like a proper telescope but it provides much better detail then you will see with your own eyes through a pair of those cardboard solar glasses.
Some advice to anyone going to their first eclipse, use this to take a few photos and then stop and actually look at the eclipse with your own eyes when its full covered as it's a magical experience that no photo you take will ever replicate.
"I recently purchased the SV510 telescope, and I must say it has exceeded my expectations. The optics are incredibly clear, providing sharp and detailed views of celestial objects. The build quality is excellent, with sturdy construction and smooth movements. The included accessories, such as the eyepieces and filters, are of high quality and enhance the viewing experience. As a beginner in astronomy, I found the SV510 to be user-friendly and easy to set up. The customer support from SVBONY has been exceptional, promptly addressing any questions or concerns I had. Overall, I highly recommend the SV510 for both amateur and experienced astronomers."