Astrophotography by Keith B. Quattrocchi

 Sh2-274
Planetary Nebula in Gemini
Ha-RGB Image
 
  Published: Sky and Telescope Gallery in August, 2017    
                   
Copyright 2013
Keith B Quattrocchi

    
Image Acquisition Information                      

Telescope:  16" RCOS Richey Chretien Telescope (ion milled at f/9) 
Camera: SBIG STL-11000
Guiding: SBIG 402
Filters: Astrodon Ha-RBG Filters
Mount: Software Bisque Paramount ME
Acquisition Programs:  The Sky,CCDAutopliot IV, CCD Soft, FocusMax 
Processing Programs: CCDStack, Maxim DL, Photoshop
Date: Data processed May 26, 2014.  Data aquisition: February 22, 2014-April 26, 2013                              
 Time: 12 x30 min ( 6 hours) for each of Ha,R,G,B for a total of 24 hours.                              
Processing:  CCD Stack and PhotoShop CS/4

Image Infornmation:  Sh2-274 is a planetary nebula in Gemini. 

Processing Infornmation  This Ha-RGB image was obtained using  AstroDon H-a and RGB filters.  The LRGB images were assembled in CCDStack.  LRGB images were then compined in Photoshop.  Further stretching, high pass filtering and background smoothing was performed with Adobe Photoshop CS/4.  All data stretching was by minimal stretching with gamma and DDP in CCD Stack and then further stretching with curves/levels in photoshop.