Thanks, appreciate that, I will look into one. Can multiple filters be used as once?
Ie I have a 2"nebula filter already. Can 2 filters be threaded in simultaneously?
Another basic question, how do you focus your camera for DSO?
Is it just by using short exposures and adjusting till everything seems sharp?
Is there a particular star or DSO that is commonly used to set the focus for infinite?
Thanks.
