When I learn how to properly cite the owners of the data, I'll edit this: it is from Jim and Linda collected as described below at the iTelescope site in New Mexico.

First processed image will be just the RGB followed by the Super-L added with HDRMT to bring out the dust lanes, etc.. The final version was a bit tweeked to increase saturation, slightly stretched, then star reduced. I did not use all images.

Detailed description [edited] of data collections:

Images were taken at Mayhill, NM (iTelescope) using a Tak106/STL. Tried to shoot everything above 45 degrees and always got the Blues and Luminance channels as close to the Zenith as possible. . The mount was the original Paramount but I forget the number. It was Telescope 14 so you can probably just go and look at that site which has not changed for that scope that I can tell. We used 300 second individual shots for every channel since the iTelescope people requested that as a maximum. We aimed for balance and to keep best focus, so the images were refocused every 30 minutes as the temps dropped early on---and the telescope was re-centered every 60 minutes to limit drift. We did use Dithering for all shots. Here are the numbers according to my log and they are close if not exact---since we tossed out the worst images. Those we kept show to be as follows. We took 49 x 5 min in the L channel giving just under 4.1 hours. There are 52 Reds for about 4.3 hours; 40 in Green giving 3.33, then an additional 10 x 5 minutes using Telescope 20 which was a Tak Sky 90 and STL set-up---for a total of 4.16 hours. Then the Blue line at 53 x 5 for 4.41 hours in total. We did gather 2-hours of Ha but they only allowed 600 second shots and the images are so noisy we opted not to use or include them--but have them with the appropriate reduction frames if anyone ever wanted to try their hand. So all-in we gathered 16.97 hours. As noted these were shared in the FITS format and with both the reduced frames and the appropriate calibration images if anyone would like for us to load the uncalibrated files and let you reduce them yourself. They re-image the calibrations as the seasons change but I got those t hat were all closest to the time window we imaged. Our first shots were Luminance taken in early September, and then again during the Dark of the Moon in October, November and December of last year (2014). So we hope this helps anyone who was needing this information to use on their processed version of M31.