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Rosette Nebula (C 49), Chris Gnam
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Rosette Nebula (C 49)

Getting plate-solving status, please wait...
Rosette Nebula (C 49), Chris Gnam
Powered byPixInsight

Rosette Nebula (C 49)

Equipment

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Acquisition details

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Description

Last night I only had a few hours so I wanted to go for a relatively bright target.  I was able to get almost 3 hours of imaging in (14x300" Ha and 20x300" Oiii).  I'm very happy with how this turned out!  I played around a bit with the Pixel Math and settled on something around R = Ha, G = 0.8*Oiii + 0.2*Ha, B = Oiii.  I boosted the Oiii stretched the Oiii channel a bit further than the Ha channel which introduced a fair amount of noise but Lightroom's noise removal took care of it well.

In the coming weeks I'm hoping to explore some more advanced processing techniques in PixInsight, particularly with denoising.  And obviously I'll be aiming to collect way more data.  I'm doing one more night of imaging a new target tonight (as I won't be able to image for a few weeks), but after that I'll be aiming to do a lot more multi-night projects!

Processing Details:
PixInsight:
  • WeightedBatchPreprocessing (Calibration, Registration, and Stacking)
  • AutomaticBackgroundExtractor
  • ScreenTransferFunction + HistogramTransformation (Stretching)
  • ChannelCombination (combining 3 channels SHO -> RGB)
  • SCNR (to dial back the green)
  • CurvesTransformation (some minor tweaks to the colors and further stretching)

LightRoom:
  • Increase in vibrance/saturation
  • Boost contrast
  • Noise reduction and Color Noise reduction
  • Slightly bumped Dehaze
  • Crop

Comments

Sky plot

Sky plot

Histogram

Rosette Nebula (C 49), Chris Gnam