10 Apr
2009
10 Apr
'09
7:55 p.m.
Yes, thanks Daniel, that is good info. Just bear in mind that the author conducted his tests under "dark skies"; that is, when interference filters are least needed. Under the compromised skies that we tend to spend most of our eyepiece time under, I'm sure that contrast gains would be better than he notes, in many cases. I would be interested in a similar project done under SPOC-ish skies.