This was actually the first light for the Trius 694 camera. Taken on my CDK17 scope and PME mount.
10 minute subs may be a tad too long for this camera and 15 minutes for an LRGB image is for sure. Perhaps I will do 5 minute exposures next time. Its all part of the learning curve with new gear.
This image also shows that oversampling (too many pixels per arc sec compared to local seeing in arc secs) whilst it may reduce sensitivity as the same amount of flux is being shared by more pixels does give you much better deconvolution ability. These images were able to take more deconvolution than 9 micron pixel camera images can. So this tends to offset the sensitivity to seeing somewhat and is an unexpected bonus.
I was very pleased with this result because this is a quite small and dim galaxy and so you tend not to see images of it as a result. Its magnitude 11.4 and 5.3 x 3.6 arcmins in size. As opposed to the Sculptor Galaxy which is 29.0 x 6.8 arc mins and magnitude 7.3.
We have some very nice spiral galaxies in the southern skies but a lot are quite small and dim.
7 hours total using 10 minute sub exposures, colour binned 2x2.
Flats, darks, bias. Darks show some uneven illumination which appears to be amp glow and flats show mild vignetting (not much). Thermal noise is minimal at -20C. Software used was CCDSoft, The Sky X, CCDstack, Photoshop, Startools.
http://upload.pbase.com/gregbradley/...53248961/large regular size
http://upload.pbase.com/gregbradley/...48961/original large size
Greg.