This is my longest integration time in a desperate attempt to defeat light pollution. Even so, the 100% image is a bit too grainy. Big thanks to Mark Adams and Ray Johnson for most helpful processing advice. Ray's great and recent image of NGC1532 sets the bar very high!
What I find most interesting is that all of the images that I could view taken with a Trius camera show rather dramatic blue. Searches of other images of NGC1532 usually show no blue, or just the smallest hint. Given the dramatic sensitivity of the Trius in blue and UV perhaps this isn't surprising. The Baader filters I used cut at 380nm so some of the blue is coming from UV. Personally I think this is fine given that one normally uses a red filter that allows near IR. So, something exta added to both ends of the visible spectra (though not necessarily in this image).
Luminance = TEC180 with TAK TOA-67 flattener. ONAG-XT, SX Ultra Star Guider, Moravian G2-8300
RGB = TEC140, ONAG, ATIK 414EX guider, Trius SX694 mono Baader filters
Both scopes on my MEII, guiding with TEC180. (Guide camera on TEC140 just used for FocusLock.)
Optec FocusLock used for a subs on both scopes.
LRGB = 13.2:4.0:3.4:4.0 (hours) 25.6 hours total integration
EDIT: I've replaced the 2 photos with an updated version. The IIS jpg file is the original in case anyone wants to compare.
70% image:
http://www.pbase.com/image/162660805
100%
http://www.pbase.com/image/162660743
Thanks for looking!
Peter