|
|
|
Sub f/4 PrimaryMirrors Recently I made a 20" f/3.95 Fused Silica (Quartz) primary mirror for Randy Cunningham and Alan Poppenhagen at AstroSystems, Inc. http://www.astrosystems.biz . They will be offering this size in a new AstroSystems SFL TeleKit (a telescope for customer assembly). Visit their web site and check it out. My f/3.95 primaries are guaranteed to be fully corrected to the edge. Painstakingly figured & tested by both auto collimation-null testing and quality verified by interferometry. Your 100% satisfaction is guaranteed with my optics, you have my name on it. These optic sets will make outstanding “short” telescopes or fantastic imaging optics. Astro-imagers, you already have a healthy investment in a CCD camera and a first rate mount, don’t settle for anything less with your choice of optics. 12.5" f/3.95 x 1.5" thick ............................$1850.00 includes matching 3.1" EDM 14.5" f/3.95 x 1.6" thick ............................$2400.00 includes matching 3.1" EDM 16" f/3.95 x 1.6" thick ................................$3100.00 includes matching 3.5" EDM 18" f/3.95 x 1.8" thick ................................$3950.00 includes matching 3.5" EDM 20" f/3.95 x 2.0" thick ...............................$5500.00 includes matching 4.0" EDM 22" f/3.95 x 2.0" thick .................................$6900.00 I can do optics as fast as f/3.3, null figured & tested and with interferometric photo(s)!. Please allow me an opportunity to quote you a price on your next "fast" set of optics.
A 20" f/3.95 primary tested via interferometry |
