Question about the relevant physical parameters to build a backyard observatory
Many astronomers are using electronic eyepieces to overcome light pollution. You may want to see what these devices can do in your area'

I use several of the Mallincam cameras in my observatory. 

https://www.mallincam.net/

https://groups.io/g/MallinCam/topics

Some photos of my observatory and assistants

https://www.flickr.com/photos/142615862@N04/sets/72157672437929982

More home observatory sites

http://obs.nineplanets.org/obs/obslist.html