SVBONY SV106 Guide Scope with Helical Focuser Finder and Guide Scope Multi-Use for Astronomical Telescope (50mm)

I looked at the listing carefully and decided this was the same scope made for other companies, but at a lower cost. Curiously it has the same model number as a 50mm finder, so I wasn't sure I was going to receive a 60, but I did. I mounted it to my Celestron 8SE to be used as an autoguider as shown in the photo It is actually a bit longer than I expected, but fits the 8SE well after I added a second vixen bar to give it plenty of support. I didn't use the narrow dovetail that came with the scope, however it is well made. so I may reuse that for another purpose. Instead I mounted the rings onto an extra pair of clamps I had. The optical quality is very nice. No visible aberrations or distortions from edge to edge, and the image is nice and bright with crisp contrast. I do see a purplish colored coating on the objective, so it may have an antireflection coating of some kind. I may need to tweak the focuser once I attach the camera, but for just using an eyepiece, everything works well and is smooth without being overly loose or overly tight. The only thing I didn't care for were the six inexpensive screws used to center the scope in the rings. They seem to be cast aluminum and not machined in any way. I may clean them up later with a die cutter. I also will add some lock nuts before my final alignment with the main scope, just to keep everything aligned and tight. So overall, I'm happy with the purchase and I think Svbony needs to be considered when choosing products of this type.

Precise focuser is quite handy, and optical quality is good. Make sure your mount won't get unbalanced by the scope, I had to strap a water bottle to the other end of my newtonian so it stayed where it was with the camera attached. The pair of rings with a total of 6 screws holds the scope firmly and is easy to adjust.

50mm fl=190mm version. Excellent guide scope with several very helpful features for the money. Sliding tube focusing for rough positioning of the guide camera, plus helical focus for fine adjustment. All moving parts can be locked with thumb screws. Even includes adjustable holding rings and short mounting bar. Lens is simple achromat with expected color halos, but that seems not to impact PHD-Guide. If one really wants to eliminate the halos put a yellow filter in front of the guiding camera. Works well with imaging scopes to 1000mmm FL.

Scope is well constructed, currently using as a finderscope, objects are much brighter than the default 30mm finderscope that my telescope came with. Note that the scope as straight thru for eyepiece only, I could not get it to focus with a star diagonal. The scope also gives me flexibility to use it as a guidescope in the future. The focusing system is precise but I found the dual focusing to be a bit tedious and focus locks do not work that well, I could still adjust the focus after tightening down the focusing lock screws.In all, a great scope, great value, good versatility.

I use this as a finder scope upgrade for my 130mm Newtonian. This is designed for a 1.25" eyepiece (not included), and has no crosshairs (reticle). To gain the crosshair function I added an SVBony sv152 illuminated reticle eyepiece. The 20mm sv152 combined with 240mm focal length sv106, make this a 12x magnification finder scope. It is overkill for most. I wear eyeglasses due to astigmatism and the original 6x30 finder scope was borderline useless.I read product questions before buying and was aware there are two focusing actions. The tube that is locked in place with set screws moves in and out of the main optical tube for a course focus. It is marked, so you can easily reset it. The helical ring rotates to deliver the fine focus. It delivers a very sharp image. The image is reversed, just as it is in my Newtonian telescope. For terrestrial views an erecting eyepiece may function to deliver a correct image, but I can't attest to that due to not owning that type.This is solid! It is hefty, too. My equatorial mount, operates different with the weight of this and the sv102 added to the telescope. I may leave this on the current scope, but I also foresee this as something worthy of a transfer to my next telescope upgrade.I bought this during a hot deal sale, but I was studying it for a few days and was ready to buy it at normal pricing.

As an autoguider scope, this thing is excellent for the money. I have it paired with a ASI220mm Mini and get nice sharp stars in PHD2. It's not the best-built telescope out there, but the aperture for the price is hard to beat.

This scope is very well constructed and features a nicely designed fine focus to supplement the coarse focus, thus allowing it to accommodate virtually all 1.25 in. cameras such as the ZWO 120 Mini. At the top of the customer reviews are two by identified as "Just Asking" and another by D. Nasser both of whom apparently have no idea what they're talking about. I too have a ZWO 120 Mini guide camera and it fits absolutely perfectly with the SV106 guide scope. The scope has three ways to focus the camera: a course focus, a wonderfully implemented fine focus, and the ability to move the camera in and out of the mounting tube for a very coarse focus adjustment. With the camera fully seated in the mount and the coarse focus extended about 2/3, the camera achieved absolutely perfect focus with much capability to spare. Note that some other reviewer's have left similar comments, also, noting that the ZWO 120 Mini easily fits with this guide scope. An absolutely great piece of kit! It's too bad that some of the reviewer's apparently don't know how to operate a lens...

I received this scope quickly and have not put it to use yet because the skies have been cloudy and sky viewing is limited. I do already have the 50mm version of this and it works great as a guide scope. It is simular in weight, size but with a longer focal length. All parts was there and assembly was quick and easy. I will be using this with a 90mm refractor telescope and ASI224 guide camera.