5 Sep
2005
5 Sep
'05
8:38 p.m.
While at the store today, I noticed that good old Tri-X film was still being marketed (for a while, at least). Has anyone ever tried B&W astrophotography from an urban or suburban location, using red filtration? This should have the double advantage of acting as an effective LPR filter, while selectively passing Ha. This used to be done quite a bit in the "old days". Any comments? Patrick? ______________________________________________________ Click here to donate to the Hurricane Katrina relief effort. http://store.yahoo.com/redcross-donate3/