Re: ATM Focuser Baffle and Dall Kirkham design with Naismyth Focus

["Bob May" <bobmay@nethere.com>]

For baffles, you want to take one side of the EP and go to the previous
surface and so forth at the same side edge.  This insures that you have a
100% illumination of the EP in the end.
Before you do this tho, you have to know how big the surfaces need to be and
this is done by finding the FOV that the EP can see and calculating the size
needed to meet that FOV at each stage.  Simple trig is all that is needed
for this job.
Bob May
http://nav.to/bobmay
bobmay@nethere.com
NEW! http://bobmay.astronomy.net