Telescope:

 8" f5 Newtonian reflector

Camera:

 ST-8XME, self-guided, binned 1x1, temp -15c, camera control MaxIm DL 4.56

Image:

 Lumicon Red filter, 450 minutes (45 x 10 minute subs), 07/05/06/08/2008; seeing 2.3-3.1 FWHM per CCDStack

Processing:

CCDStack 1.3.7, Photoshop 7.0

Location:

 Rolling Roof Observatory, Thousand Oaks, CA 91360 (+34d 13m 29s -118h 52m 20s)

Notes:

This image is a work in progress ... I needed to reshoot this galaxy because my previous image was a 70 minute unfiltered image using my film coma corrector (for use with the 2" Lumicon off-axis guider). Since I do not have an adaptor to make the required corrector to focal plane distance, the star images were larger than without the coma corrector. This is my first image with the Lumicon Red filter. I would like to add more exposure time, but for now, this image is better than what I had. NGC 6946 is just under 40 minutes SSE of the rich open cluster NGC 6939