Astrophotography by Keith B. Quattrocch

M33 (Triangulum Galaxy)
 Spiral Galaxy in Triangulum 
LRGB/Ha Image 

Copyright 2021
Keith B Quattrocchi and Bray Falls

Image Acquisition Information  
                    
Telescope: 16" RCOS Richey Chretien 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 Filters with Starlight Xpress 9 position FW
Acquisition Programs: The SkyX, SGP, PHD2
Processing Programs: CCDStack, Photoshop CS4, Astrobin, PixInsight.
Date: Data processed October 30, 2021.  Data aquisition: October 10, 2021-October 24, 2021                            
Time:  6 x10 min x 4 for L,R,G,B and 80 x 10min for Ha for a total of 17.3 hours                          
Processing:  CCD Stack and PhotoShop CS/4, Astrobin, PixInsight

Image Information: M33 is a spiral galaxy in Triangulum.

Processing Infornmation  This LRGB and Ha images were obtained using  AstroDon filters.  The LRGB and Ha 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.