Henry
Do yourself a favour and visit Snake Valley this weekend - best time late afternoon into early evening - We are all fast asleep in the mornings! Visit from tonight until Monday night. Last of us leave Tuesday morning.
Astrocamp is on and you can look at (and through) all types of telescopes and accessories and we can answer your questions there.
Details here:-
http://svaatest.site88.net/index.php?p=1_10_March-Camp
Cheers
Eric