Angelo TEC APO 140 ED Vixen FL-102S Fluorite Carl Zeiss AS 80/1200 1Q Zeiss Abbe II - Pentax SMC Ortho 7 millimetri - TMB Supermonocentric 5mm - Vixen Or.4mm Barlow 2X-4X Carl Zeiss Abbe
Quote:What happens if the prism is smaller?
Quote: If it is tending toward lozenge shape then that's an indication of undersized prisms.
So this cabbie says: "Know who I had in this cab last week? Bertrand Russell! Wisest man in the Western World. And I says to him 'Bertie, what's it all about?' And do you know, he couldn't tell me..." Kenneth Williams
Quote:So it may be like this that if the exit pupil tends toward lozenge shape then that would be an indication of undersized prisms OR tilt in prisms.Then there would be a better method that will determine for sure if the prisms are undersized.
Quote:...I hope it is a 20x true...
Quote:I'll take great views over accurate specs anyday, given a choice between one or the other.
"The heavens declare the glory of God"...
Thanks Stan, for helping me resolve a controversy.
Quote:Thanks for that Ed. , and to Stan also .Kenny
Quote:75 feet seem too close a distance.