Image Acquisition Information
Telescope: 16" RCOS Richey Chretien Telescope (ion milled at 6/9)
Camera: SBIG STL-11000
Guiding: SBIG 402
Filters: Astrodon Ha, SII OIII and Astrodon
Mount: Software Bisque Paramount ME
Acquisition Programs: The Sky,CCDAutopliot IV, CCD Soft.
Processing Programs: CCDStack, Maxim DL, Photoshop
Date: Data processed August 16, 2013. Data aquisition: August
5, 2013- August
Time: 14 x30 min ( 7
hours) for each of Ha, SII, OIII, L, R, G and B
Total of 49 hours imaging time.
Processing: CCD Stack and PhotoShop CS/4
Image Infornmation: M81 NGC 7635 is an emission nebula in Cassiopeia.
Processing Infornmation This Composite Narrow Band and LRGB image was obtained using AstroDon
NB and LRGB filters. The NB and LRGB images were assembled in CCDStack. The NB and LRGB images were then
compined in Photoshop. Further stretching, high pass filtering and background smoothing was performed with Adobe Photoshop
CS/4. All data stretching was by minimal stretching with gamma and DDP in CCD Stack and then further stretching with
curves/levels in photoshop.