This thread became an incentive to open this topic.
I want to share my experience.
Many years ago, I repeated the common mistake of beginners who want to maximize their telescope with various accessories.
For example the first post on a my link with an 80 mm finder.
First photo this post, my 18" telescope. I also installed an 80mm finder. What is the finder for and what did it give me in the end?
Basically, this is the initial 2-star setting for DSC operation.
It turned out that push-to in my telescope worked well and there was no point in this finder. The star fields looked much better through the 31st nagler for 18" how a relatively small aperture of 80 mm. In fact, the 80 mm finder became a ballast for the telescope for the whole night, except for the start of observations.
After a few years, I found it a burden to use this finder. For balance, I had to add 10 kg weight for the mirror box. This is a significant addition, when my primary mirror weighed 18 kg and I could not make the weight of a mirror box for a classic design less than 33 kg. Those in the end I had to add +10 kg.
I ended up building a "hybrid" telescope with one plywood ring UTA and installing a Telrad on it. In the second photo he is on the left, on the right is my Zambuto 14.5" f/5. Yes, I was able to significantly lighten the mirror box by replacing the steel mirror cell (> 10 kg) with an aluminum one (~ 3 kg). But after some exploitation, I realized that one ring does not satisfy me in terms of the stability of the telescope (compared to the earlier classical UTA).
I decided to go further. Return to the two-ring design. But already carbon fiber.
Photo by UTA number 3.
Then I had many more upgrades (replacing spider for my design, replacing a focuser, etc.). But the main thing I did. Now, my 18" telescope weighs the heaviest part, comparable to the weight of the heavy part of my classic 14.5" and has become my main telescope when traveling under dark skies. Of the 4 telescopes that I have.
The moral of all of the above is, do not try to load UTA with a variety of devices, which in the future can only make your life not comfortable. Try to make the UTA make it easy as possible by all means available to you.
Edited by a__l, 27 July 2021 - 01:06 AM.