November 13, 2007, 10:45pm PST
Victoria, BC, Canada

The gas cloud surrounding the comet continues to grow in size. The green glow around the comet seems to be gone, and the two tails have disappeared as well. This comet is a chameleon - ever changing! The bright star in this image is Mirfak

Using my unmodified Canon 30D and a 400mm telephoto lens mounted on an Astrotrac equatorial mount, I acquired 55 images and stacked them to produce this resultant image. Please note: the image size is much larger as used for some of my previous images, therefore size comparisons cannot be made using the images as posted.

Details:
Optics: Unmodified Canon 30D and Canon 400mm L series telephoto operating at f/5.6 mounted on an Astrotrac equatorial mount.
Exposures: 55 images at 30 sec
ISO 1600,
Custom white balance to compensate for IDAS LPS filter
Processing:
ImagesPlus 3 beta 10: digital development of Canon Raw to FITS, dark & flat frames applied. Averaging used for stacking the images, then moderate Digital Development applied to the resultant image, and conversion of this image to 48 bit TIFF for further processing.
ACDSee Pro 2: hand spotting image, conversion to jpg.