Jon replied to the topic 'Observatory 17b' in the forum. 6 years ago

Meant to ask, what are the clear dimensions that you are using for the opening? I am looking at doing something similar but I am having trouble deciding how much clearance I need. Is there some relationship you are using? For example, how long is the longest point of your setup (i.e. the length from the tip of the counter weight shaft to the top of the scope.) How much clearance did you leave? Thanks and I hope you are making progress with your network.....

--Jon

Read More...