Interacting Galaxies NGC6621 & 6622, a.k.a. Arp81 - 280Mly distant in Draco

Imaged from Nova Scotia, Fall, 2020

APOD Link for Arp81

 

LRGB Combination

Data
Altitude at culmination 66°
Minimum Airmass Value (sec z) 1.1
Mean FWHM with 14.5" 2.8 arc-s
Taking Camera SBIG STL-11002XM Nova Scotia Fall, 2020, skies ~mag 6.6 - CCD @ -20C
Imaging OTA AGO 14.5" iDK
Equivalent focal length and ratio 2465mm @ f/6.7
Mount Astro-Physics 1600GTO
Guiding PHD2/ONAG/Ultrastar Pro
RGB Total Integration Time 6hrs L9x10 min, R9x10 min G9x10 min, B9x10 min, Astrodon Gen 2 I series Filters. All Binned 1X1
Acquisition Main Sequence Software-Sequence Generator Pro
Calibration and Stacking Darks, Flats and Bias - Stacked and calibrated with PixInsight
Processed PixInsight, Affinity Photo v.2.53 and Bob Franke's CCDBand-Aid

Annotated Frame

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