Astrophotography by Keith B. Quattrocchi


NGC 6992: Eastern Veil Nebula
Supernova Remnant in Cygnus
Ha/OIII + RGB

Copyright 2023
Keith B Quattrocchi and Bray Falls

Image Acquisition Information  
                    
Telescope: 16" RCOS Richey Chretien Telescope (ion milled at f/9) 
Camera: ZWO Full Frame Back Illuminated CMOS ASI 6200 MM
Guiding: Starlight Xpress AO with UltraStar Autoguiding Camera (AO control using maxim DL software).
Filters: Astrodon LRBG, H-alpha, S-II and OIII Filters
Acquisition Programs: NINA, The SkyX, PHD2, PWI4
Processing Programs: PixInsight, RC Astro, CCDStack, Photoshop CS4
Date: Data processed on June 15, 2023.  Data acquisition: May of 2023                            
Time:  11 hours (10 minute exposures) for each of Ha/OIII + RGB  for a total of 55 hours.                
              
Image Information:  The Eastern Veil Nebula (Caldwell 33, NGC 6992) is a part of the larger Cygnus Loop supernova remnant in the constellation Cygnus, located about 1470 light-years away. It's an expanding cloud of heated gas and dust formed from a massive star's explosion thousands of years ago. While challenging to see with the naked eye due to low surface brightness, it can be observed with binoculars or a telescope, especially using an O-III filter to see its intricate, filamentary structure.
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Processing Information: These Ha/OIII + RGB images were obtained using AstroDon filters.  The Ha/OIII + RGB images were batch processed (calibrated, registered, normalized and integrated) in PixInsignt.   Further stretching, high pass filtering and background smoothing was performed with Adobe Photoshop CS/4 and PixInsight.