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                            Astrophotography by Keith B. Quattrocchi

















              NGC 4725
               Sprial Nebula in Coma Berenices 
               LRGB Image
                  
                   
                                    Copyright 2018
                                     Keith B Quattrocchi

Ngc4725xLRGBx8Version19web.jpg




                                      Image Acquisition Information                      
                               Telescope: 16" RCOS Richey Chretien Telescope (ion milled at f/9) 
                               Camera:    SBIG STL-6303
                               Guiding:     SBIG AOL
                               Filters:       Astrodon LRBG Filters
                               Mount:       Software Bisque Paramount ME
                               Acquisition Programs:   The SkyX, CCDAutopilot 5, FocusMax 
                               Processing ProgramsCCDStack, Photoshop CS4.
                               Date: Data processed May 19, 2018.  Data aquisition: April 19, 2018-
                               April 22,2018                              
                               Time:  8 x20 min 2.66 hours) for each of L,R,G,B for a total of 10.66
                               hours.                              
                               Processing:  CCD Stack and PhotoShop CS/4
Image Infornmation: NGC 4725 is a barred spiral galaxy in Coma Berenices. 
Processing Infornmation  This LRGB images were obtained using  AstroDon filters.  The LRGB images were assembled in CCDStack.  The assembled image and a Luminence were recombined in Photoshop.  Further stretching, high pass filtering and background smoothing was performed with Adobe Photoshop CS/4.  All data stretching was by without DDP CCD Stack and then further stretching with curves/levels in photoshop.   

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