Michael Gilmer - Member of the Meteoritical Society & Collector of Falling Stars.
☄ ⒼⒶⓁⒶⒸⓉⒾⒸ ⓈⓉⓄⓃⒺ - www.galactic-stone.com
SLAP Observer --- TMB130SS, SV102V(LOMO Lens), SV80ED Deluxe "The only thing necessary for the triumph of evil is for good men to do nothing." -- Edmund Burke. "People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf." -- George Orwell "The measure of a man’s greatness is not determined by what he accomplishes for himself, but by what he accomplishes for others.” -- Some Bald Guy
Theoretical Amateur Astronomer (currently without scope)
Tele Vue-85 Meade 8" SCT Nova Hitch Berlebach UNI 24 Meade 12" LightBridge Orion ED100 Losmandy GM-8 Orion SVP Quarter Hitch
Quote:nice article... makes me wonder about non-ED's, like the Orion 100mm f6... good old fashioned achro.how would the prism help one of these?thanks, david
Show me an aging Greek and I'll show you the Nick of time.
Quote:Maybe a simpler design, like an orthoscopic, would solve those ghosting issues......or maybe it was the prism. Do you have a simpler eyepiece with less elements in it to try?
Quote:Good question Kenneth. My AT66ED is about f/6, so I don't think that qualifies as fast. It's not slow, but not really fast either.
Quote:I collimated my new refractor yesterday with the chesire. So far, so good... But when I put my new 2" burgess prism in it and did another check I saw that the instrument was now heavyly out of collimation. When I put a lasercollimator in the prism only I saw that the reflection on the other side of the prism diagonal was 8mm out of the center... :-s.I don't think it's possible to collimate this prism diagonal. Is this normal? Should I ask a new one from the dealer?