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Old 09-06-2020, 02:00 PM
RugbyRene (Rene)
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Join Date: May 2015
Location: Sydney
Posts: 352
M20 - Trifid Nebula

This image represents 16hr 12 mins of integration time. Details as follows:

Equipment:
Esprit 100
SW AZ EQ6
ASI294
IDAS D1 LP filter
SW EvoGuide 50 + ASI120mm mini guiding

Software:
KStars/EKOS for acquisition
DSS for stacking
PixInsight for post-processing

Acquisition details:
Subs - 486 x 120s - 16hr 12mins
Dark/Flat/Dark Flats - 50
Bias 500

PI workflow:
  1. Linear Fit
  2. SCNR
  3. Linear Noise Red on Luminance & Chrominance layers
  4. Histogram Stretch
  5. SCNR
  6. HDR Multiscale Trans
  7. Local Hist Eq
  8. Curves
  9. Star shrink (still not happy with the stars)
  10. Unsharp mask (using a star mask)

I'm relatively happy but I'm my own worst critic and can see areas that can be improved.

I'm waiting for an Ha filter to be delivered and I'll capture some Ha data and add it in.

Thanks for looking.

Rene
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  #2  
Old 09-06-2020, 06:38 PM
John W (John Wilkinson)
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Join Date: Jan 2010
Location: Castlemaine, Victoria, Australia
Posts: 1,417
M20 - Trifid Nebula

Nice shot Rene - of the nebula itself and surroundings.

Cheers, John W.
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