View Single Post
  #12  
Old 03-01-2007, 09:44 PM
strongmanmike's Avatar
strongmanmike (Michael)
Highest Observatory in Oz

strongmanmike is offline
 
Join Date: May 2006
Location: Canberra
Posts: 17,694
It's an astrograph

Quote:
Originally Posted by Rodstar View Post
That looks like one serious imaging set-up, Mike. I hope you get some decent weather in the nation's capital in the coming months so you can get some good imaging done.

I bet the stars come to a beautifully tight airy disk on visual work!?
Hi Rod

While the optics in my N12 are indeed excellent (Strehl of 0.99 and RMS of 1/60th wave) it is a fast astrograph so it has a large central obstruction (40%) so for visual work the design could be better. Having said that for all but the most descriminating planetary viewing I am sure the views will still be very good and with a coma corrector in place like a Paracorr the wide field low power Nagler views should be exquisit.

Mike
Reply With Quote