Author Topic: NGC 7424 in Grus  (Read 4892 times)

Offline Geoff

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NGC 7424 in Grus
« on: 2018 October 14 15:47:25 »
I am happy with the way this turned out. It seems that longish exposure plus decon goes a long way to combating mediocre seeing.

The image and acquisition details are here https://www.astrobin.com/371593/


Higher res is here https://www.astrobin.com/full/371593/0/

Main processing steps were
  • DBE on luminance
  • TVG and MMT noise reduction on Lum
  • Decon on Lum
  • Histogram Stretch on Lum
  • DBE, PCC, TVG and MMT noise reduction, Histogram stretch on RGB
  • LRGBCombination
  • Some fiddling with saturation, LHE, TVG and HT and final crop


Here are some details about the object, shamelessly lifted from Wikipedia:
NGC 7424 is intermediate between normal spirals (SA) and strongly barred galaxies (SB). Other features include the presence of a central ring-like structure and a relatively low core brightness relative to the arms. The redder color of the prominent bar indicates an older population of stars while the bright blue color of the loose arms indicates the presence of ionised hydrogen and clusters of massive young stars. NGC 7424 is listed as a member of the IC 1459 Grus Group of galaxies, but is suspected of being a "field galaxy"; that is, not gravitationally bound to any group.
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Offline RickS

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Re: NGC 7424 in Grus
« Reply #1 on: 2018 October 14 22:58:08 »
Nice work, Geoff!