Image Acquisition Information
Telescope: 16" RCOS Ritchey-Chretien Telescope (ion milled at f/9)
Camera: SBIG STL-6303 M
Guiding: SBIG AOL, Astrodon MOAG AOG (SBIG 237
Filters: Astrodon L, R, G, B
Mount: Software Bisque Paramount ME
Acquisition Programs: The Sky,CCDAutopliot III, CCD Soft.
Processing Programs: CCDStack, Maxim DL, Photoshop
Date: February 12-March 9, 2008
Time: 21x20 min ( 7
hours) each for L, R, G, B: total 28 hrs
Processing: CCD Stack and PhotoShop CS/3
Image Infornmation: NGC 20903 is a spiral galaxy in Leo, some 20 million light years
distant. It is known for its bright blue spiral arms, large number of star clusters and the high frequency
of star formation at the center of the galaxy. In this image a small cluster of bright globular objects
can be seen at the center of the galaxy, in the midpoint of the barred section of the galaxy. The significance of this
finding is unknown to me, though it may represent areas of intense star formation.
Additional Comments: Image processing was performed by layering the luminance layer with an RGB layer in PS CS/3. Additional
procesing included data stretching (curves/levels), high pass filtering and smoothing with Kodac Gem.