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 with FLR)

                               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 seen. 

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.

 

 

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