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M42 - Great Orion Nebula


From the author of   Sizing Up The Universe


M42

22:05 EST Feb 15, 2022.
ZWO ASI2400MC-Pro on 10" RCOS at f/9.
L-Extreme narrowband filter.
7 five-minute LiveStacks of 30-second exposures.
RL deconvolution in Python.


M42

18:35 EST Jan 31, 2022.
ZWO ASI2400MC-Pro on 10" RCOS at f/9.
9 five-minute LiveStacks of 4-second exposures.
RL deconvolution in Python.



Natural
M42

Tarted Up
M42

03:27 EDT Oct 17, 2004.
Starlight Express SXV-H9 on 4" Tak FSQ refractor at f/5.
Photoshop LayerMask of a long and a short exposure.
Long Exposure: L = R = Hα = 60 mins, G = 6 mins, B = 4 mins (unguided 2-minute subexposures).
Short Exposure: L = R = Hα = 2 mins, G = B = O-III = 2 mins (unguided 20-second subexposures).

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