Image Acquisition Information
Telescope: 16" RCOS Richey Chretien Telescope (ion milled at 6/9)
Camera: SBIG STL-6303 M
Guiding: SBIG AOL, Astrodon MOAG AOG (SBIG 237
Filters: Astrodon Ha, SII, OIII
Mount: Software Bisque Paramount ME
Acquisition Programs: The Sky,CCDAutopliot III, CCD Soft.
Processing Programs: CCDStack, Maxim DL, Photoshop
Date: June 7-June 13, 2008
Time: 12x20 min ( 4
hours) each for each of L, R, G, B:
Total of 16 hours imaging time.
Processing: CCD Stack and PhotoShop CS/3
Image Infornmation: NGC 5921
is a barred spiral galaxy in serpens caput, approximately 65 million light years distant. It is relatively small, measuring 4.8
x 4 arc-minutes in size and has a magnitude of 11.5. The barred nucleus and it's multiple spiral arms can be clearly
Additional Comments: Image processing with CCDStack, producing an LRGB image. The LRGB and separate Luminance images were
combined in Photoshop CS/3 (twice, first using soft light option then with the overlay option). Further data stretching,
high pass filtering and background smoothing (Kodac Gem) performed with Adobe Photoshop CS/3.