HMSTG24 is the nondescript dark nebula at the center of this image. At Dec -33, this one is found in Puppis about two degrees above Gum 10. More information on HMSTG catalog of “southern dark clouds” can be found here - http://articles.adsabs.harvard.edu/pdf/1986A%26AS...63...27H.
Luminance – 12x600s – 120 minutes – binned 1x1
RGB – 8x300s – 40 minutes each – binned 2x2
240 minutes total exposure – 4 hours
Imaged on January 17th, 2021 from Dark Sky New Mexico at Rancho Hidalgo (Animas, New Mexico) with a SBIG ST-8300M on an Astro-Tech AT90EDT at f/6.7 603mm.
LRGB - https://www.flickr.com/photos/dcrowson/51899121685/sizes/l/
LRGB crop - https://www.flickr.com/photos/dcrowson/51897510597/sizes/l/