The images are pretty red deficient, and I have done what I can bringing up the reds in the "shadows" in Photoshop. The spectral response curve of the chip is here, measured by none other than Christian Buil. http://www.astrosurf.org/buil/us/digit/spectra.htm Tom > > From: Brian Skiff <Brian.Skiff@xxxxxxxxxx> > Date: 2005/08/29 Mon PM 10:51:01 EDT > To: az-observing@xxxxxxxxxxxxx > Subject: [AZ-Observing] Re: Astroimages from Cherry Road > > Among the details I looked at was in the image "East of M6". > I noticed that the red supergiant BM Sco in M6 appears rather faint, > so just now this evening I had a look binoculars to confirm that this > must be an artifact of the camera/sensor or the images as displayed, > since the star is as bright as normal---roughly V mag 5.5, whereas > it looks more like 7th in the image. The images don't look > red-deficient in general, so I'm puzzled why this would happen. > > \Brian > -- > See message header for info on list archives or unsubscribing, and please > send personal replies to the author, not the list. > > -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list.