M22 - Globular Cluster in Sagittarius

Imaged from Nova Scotia, Spring 2018

Wikipedia Link for M22

 

RGB Combination

Data
Altitude at culmination 22°
Minimum Airmass Value (sec z) 2.7
Mean FWHM 3.5 arc-s
Taking Camera SBIG STL-11002XM Nova Scotia Spring 2018, ~mag 6.6 - no moon @-20C
Imaging OTA AGO 14.5" iDK
Equivalent focal length and ratio 2465mm @ f/6.7
Mount Astro-Physics 1600GTO
Guiding PHD2/ONAG/Lodestar X-2
LRGB Total Integration Time 2hrs 15mins R9x5 min, G9x5 min, B9x5 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
Reprocessed Mar 2023 PixInsight, Affinity Photo v.2.04 and Bob Franke's CCDBand-Aid

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