I'm looking at purchasing a nebula filter for my scope. I have a 12" f/5 dobsonian, and I'm rarely able to get out to dark sky sites
.
So! What would be a sensible choice considering these circumstances?
Also, what would the contrast be like with the filter you suggest for my scope?
Thanks!
P.S. I'm not exactly rich, so something in a sensible price range what be good!