David Cotterell Toronto, Ontario "If an observer actually sees an object, there is no point in referring to a formula to find out whether he ought to see it; and if he fails to detect it, no formula will ensure his success." - W.H. Steavenson 8" f/15.5 TEC Maksutov 16" f/5 Teeter/Zambuto Dob 66mm WO SD AT 65EDQ APO Refractor Astro-Physics Mach 1 GTO Mount iOptron ZEQ25 mount Canon 60Da
Quote:Since we're in an announcing mode, Aug. 21-24, 2014 (you can come earlier, of course).....
George N Obsession 20 Optical Guidance Systems 10" F/9 R-C Cass 6" F/5 & 8" F/8 home-made Newts Explore Scientific 127mm ED MI-250 mount Denk II bino-viewer, with PowerX and Newt reducer, Member, International Dark-Sky Association
Crazy ATM 6" F9.4 Newtonian first light July 2011 8" F/5.6 Dob, first light June 2003 12.5" F/5 Dob, first light Aug 2007, as well as 9- 4" f/6 mirrors. In progress:12" f/7 on quartz, 18" F/5 on BVC, and a set of 3-8" optical flats All optics by yours truly.