What is it’s maximum useful magnification? Does it still have a nice image quality at 100x magnification or is that already too much for such a short achromat?
You should be able to achieve 120x to 160x without a problem, depending on the manufacturer and sky. You will have significant chromatic aberration at most any magnification. You will need to buy a fringe killer filter. I recommend the SvBony SV231 filter. Just priced one on Amazon for $55. I use for my photography. Check out my video on some of the photos I took with my Celestron 80/400, using this filter. No fringe.
I have purchased several "parts only" telescopes on EBay and have used those parts in other scopes. For instance, in my Celestron 80/400 I am using an extension in place of the diagonal I had to use to bring the camera to prime focus. I got the extension off one of my Orion Spaceprobe 130mm Newtonians. And, I replaced that extension with a shorter extension I got of an older parts only Orion Spaceprobe 130mm Newtonian. Thanks for your comment.
@@AmatureAstronomer One of my brothers constructed a Dobsonian telescope, from scratch, a few years ago. He is in the process of building another scope but I'm not sure if it is a Dobsonian or not. Either way,,,, building one from scratch is way above my pay grade! LOL
Your videos are very interesting but a little too short in my opinion, 10 minutes for reviewing a telescope would be the minimum I would say. Also I noticed you talk very little about the optical performance, magnification used on different objects, chromatic aberrations, light gathering capacity, etc.
You can buy after market focusers to swap out that 1.25 focuser.
What is it’s maximum useful magnification? Does it still have a nice image quality at 100x magnification or is that already too much for such a short achromat?
You should be able to achieve 120x to 160x without a problem, depending on the manufacturer and sky. You will have significant chromatic aberration at most any magnification. You will need to buy a fringe killer filter. I recommend the SvBony SV231 filter. Just priced one on Amazon for $55. I use for my photography. Check out my video on some of the photos I took with my Celestron 80/400, using this filter. No fringe.
Do you scavenge parts from old telescopes to construct....or improve the telescope that you are using?
I have purchased several "parts only" telescopes on EBay and have used those parts in other scopes. For instance, in my Celestron 80/400 I am using an extension in place of the diagonal I had to use to bring the camera to prime focus. I got the extension off one of my Orion Spaceprobe 130mm Newtonians. And, I replaced that extension with a shorter extension I got of an older parts only Orion Spaceprobe 130mm Newtonian. Thanks for your comment.
@@AmatureAstronomer One of my brothers constructed a Dobsonian telescope, from scratch, a few years ago. He is in the process of building another scope but I'm not sure if it is a Dobsonian or not. Either way,,,, building one from scratch is way above my pay grade! LOL
Your videos are very interesting but a little too short in my opinion, 10 minutes for reviewing a telescope would be the minimum I would say. Also I noticed you talk very little about the optical performance, magnification used on different objects, chromatic aberrations, light gathering capacity, etc.