LRGB: 150:50:50:80; L-15 ten minute images; R and G consisted of 5 ten minute images; B consisted of 8 ten minute images. All color images were binned 2x2; luminance images unbinned.
Equipment: 10" LX200 at f/4.6, and an SBIG ST-7E camera/CFW-8 color filter wheel
Image Acquisition/Camera Control: CCDSoft V5.
Processing: Calibrated (darks, dawn flats and flat darks) and registered with AIP4WIN; L average combined in AIP; RGB median combined in AIP, Richardson-Lucy applied using AIP4WIN. I also took the original combined data and performed DDP in AIP, then layered in the cores of the two galaxies, so that they would not be burned out. Because the color channels also were burning out in the core, I did a DDP on each color channel in AIP; I normally do not do any sharpening in the color channels. Color combined and levels and curves adjusted, and small gaussian blur applied, in Photoshop
Location: My yard in Redmond, Washington, elevation 500'.
Date: Luminance images taken during the night of 5/11/02; Color channels taken during the night of 6/9/02.
CCD Temperature: Luminance: -25C; Color: -18C