From: Milton Aupperle <milton@outcastsoft.com>

Date: December 10, 2009 11:12:22 AM MST

To: Astro_IIDC@yahoogroups.com

Subject: Re: [Astro_IIDC] Re: focal reducer for DMK

Hi Willie;

On 10-Dec-09, at 11:01 AM, Willie Strickland wrote:

Thanks Milton and Mark for your responses, very helpful.  I need a reducer that will screw on like a filter.  This is for use on the big scope which is FL 5490.  I get a FOV of just over 4 arcmins with the DMK which makes it pretty hard to find a quide star sometimes.  Coma is not a big issue when I am using the camera to guide.

Screw onto what "part" though? The 1.25" nose piece or something else?

Most Focal reducers are designed for SCT backs, however you can also get things like the MOOG screw on which fits onto the 1.25" Nose Piece too.

HTH..

Milton J. Aupperle