what focal reducer should i buy?
Posted 09 November 2012 - 08:38 AM
Posted 09 November 2012 - 07:04 PM
I found a used Denkmeier S1 - it's a permanent fixture on my CPC1100.
One eyepiece and I get 3 different views - based upon these focal lengths:
w/ reducer = appx 1764 mm w/ a 23 mm EP = 77x
normal setting = 2800 mm w/ a 23 mm EP = 122x
@ barlow setting = 5600 mm w/ a 23 mm EP = 244x
Change EP's and get a whole different set to powers . . . pretty neat!!
Before you buy anything - check the used market! The Denk Powerswitches
are really the best!
Posted 10 November 2012 - 09:28 PM
Posted 11 November 2012 - 12:48 PM
for SCT the Celestron f/6.3 for a flatter field
for EdgeHD the Astro-physics CCDT67 for a large clear aperture.