Astrophotography by Keith B. Quattrocchi

NGC 7635
Bubble Nebula in Cassiopeia
H-alpha Image

 Copyright 2007 
Keith B Quattrocchi

                
Image Acquisition Information                      
 
Telescope: 16" RCOS Ritchey-Chretien Telescope (ion milled at f/9) 
Camera: SBIG STL-6303 M
Guiding: Astrodon  MOAG AOG (SBIG 237 with .65 FLR)
Filter: Astrodon H-alpha
Mount: Software Bisque Paramount ME
Acquisition Programs:  The Sky,CCDAutopliot III, CCD Soft. 
Processing Programs: CCDStack, Maxim DL, Photoshop
Date:June 3-4, 2007                              
Time: 18 x 20 minutes ( 6 hours)                            
Processing:  CCD Stack and PhotoShop CS/2
 
This Image:  The Bubble Nebula (NGC 7635) is the result of a star some 40 times the size of our Sun ejecting material into space.  The bubble is 6 light years wide and is some 7000 light years form the Earth. 

Processing Comments:First Light Image at the Lost Valley Observatory,  Telescope not yet properly collimated and without a T-Point Model. Seeing was about 1.8 arc-sec.  Minimal processing, using CCD Stack and PS for image data stretching and smoothing.