From: Mark Gaffney <markgaffney@me.com>

Date: December 6, 2009 4:04:36 AM MST

To: Astro_IIDC@yahoogroups.com

Subject: Re: [Astro_IIDC] focal reducer for DMK

P.S. Willie, the Flea 2 I`m using is about the same pixel size as your DMK 21(though colour) 648 x 488 pixels. PGR Fleas & Flea 2`s of this kind have larger pixels though 7.4 x 7.4 microns as opposed to 5.6 x 5.6 microns for the TIS ones. To get to the info on the Mogg reducers click on Focal Reducers over on the left. The 0.3 reduction is managed by adding an extender tube to the 0.6 one (either choice when purchasing is possible..)

Mark.

On 06/12/2009, at 6:43 PM, Willie Strickland wrote:

Have any of you used a focal reducer with your DMK camera. I have a DMK214AF and I have used it with a .5 focal reducer from Atik. With the scope I am using, I really need something more along the lines of .63 I think. Just wondering if anyone had hany recommendations.

I am attempting to capture the occultation of TYC 1252-803-1 by (423) Diotima this morning. For occultations it would be nice to have the wider field. I was able to get the targets and watch Diotima move closer to the star, but now I have nothing.

We are supposed to be in occultation right now. It would be nice if the field was larger so I could watch a nearby star and know that I am still getting data and my tracking is still on target. I really have no way of knowing until the occultation is supposed to be over.

It is quite cloudy here but I was getting some image through the clouds. We will see how it goes.

Willie