Astrophotography by Keith B. Quattrocch

Horsehead Nebula (Barnard 33)
 Absorption Nebula in Orion  
LRGB/Ha Image 

Copyright 2021
Keith B Quattrocchi and Bray Falls

Image Acquisition Information  
                    
Telescope: 16" RCOS Richey Chretien Truss Telescope (ion milled at f/9) 
Camera: Full Frame ZWO ASI 6200MM CMOS Back-Illuminated Camera
Guiding: full frame: Starlight Xpress AO (USB version)
Filters: Astrodon LRBG and Ha Filters with Starlight Xpress 9 position FW
Acquisition Programs: The SkyX, SGP, PHD2
Processing Programs: CCDStack, Photoshop CS4, Astrobin, PixInsight.
Date: Data processed November 25, 2021.  Data acquisition: October 29, 2021-November 25, 2021                            
Time:  30 x10 min x 4 for L,R,G,B and 140 x 10min for Ha for a total of 43 hours                          
Processing:  CCD Stack and PhotoShop CS/4, Astrobin, PixInsight

Image Information: Ngc 7293 is an absorption nebula in is a spiral galaxy in Orion.

Processing Infornmation  This LRGB and Ha images were obtained using  AstroDon filters.  The LRGB and Ha/OIII images were assembled in CCDStack with minimal DDP.  The assembled image were recombined in Photoshop.  Further stretching, high pass filtering and background smoothing was performed with Adobe Photoshop CS/4, Astrobin and PixInsight.