Last night I spent several hours tinkering with my new OAG and Lodestar guide cam. It's a whole different ball game and very difficult to set up. Maxim could not find decent guide stars and kept going to pixels instead. A friend of mine suggested doing dark calibration on the guider image. I did that and it seemed to work ok. So by 11 PM I noticed M13 was high enough to image and I put an hour and 15 minutes of RGB, all unbinned on it. I did all 300 second exposures. All the subs looked perfect and so far I think this is probably my nicest image with the Edge 8, which has been very frustrating to use ever since I got it. This image was fully calibrated and post processed in PixInsight with some Photoshop. Despite the moon, background gradients were pretty minimal. Here's the link: Albert http://www.flickr.com/photos/49526053@N04/8668562143/in/photostream/lightbox/ -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list.