The *shortest* Cassegrain
Posted 24 February 2004 - 04:49 PM
So, I just read about this application of the Cassegrain design, and this pops up on AstroMart:
Posted 24 February 2004 - 05:12 PM
BTW, since it's a classic Cassegrain, it doesn't really belong in the CAT forum.
Posted 24 February 2004 - 07:11 PM
Posted 25 February 2004 - 01:34 AM
What do they mean by "dual (or more) wavelength applications"? Simultaneous UV, IR and visible use?
Posted 25 February 2004 - 02:23 AM
The optical tolerances must be amazing. You wouldn't think the design would have any benefits over a lens system. Because of the object distance would would think the central obstruction would be a bigger problem.
Those collimation screws must be teeny weeny!
Posted 25 February 2004 - 02:27 AM
Posted 29 February 2004 - 02:25 PM