I have access to several because of connections to photography.
I really like the Manfrotto, but it is probably overkill for what you are looking for. Well, maybe not. Look at their consumer grade products.
Shop at
www.bhphotovideo.com, but try to look locally before you buy.
Interesting enough the tripod I use most was made in the late 1970. It is good for small cameras, my spotting scope, but not heavy enough for the big cameras.
I would suggest you stay away from the desktop Manfrotto and the monopods which opens up with 3 small legs. These do not work with spotting scope weights.