Last night I got 5 hours of RGB in New Mexico with the SBIG 11000M. I did all 300 second exposures unguided. Today, I combined that data with some Ha I acquired early this year with my Starlight XPress H16. Cropping was difficult because the two chip sizes are very different and one is rectangular while the other is vertical. In any event, I had six hours of very good Ha data and did the combine in PixInsight. You can see the result with this link. Thanks Albert http://www.flickr.com/photos/49526053@N04/10158978135/ -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list.