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M20 Trifid Nebula (HSO), galactic_surfer
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M20 Trifid Nebula (HSO)

Getting plate-solving status, please wait...
M20 Trifid Nebula (HSO), galactic_surfer
Powered byPixInsight

M20 Trifid Nebula (HSO)

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Acquisition details

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Description

About 75 minutes of HSO data captured by a telescope in Chile, courtesy of Telescope.live, processed in PixInsight. 

PixelMath for nebula: R/K = Halpha+SII,  G = OIII*2 + Halpha*0.5, B = OIII*2.5; followed by tweaks in ScreenTransferFunction / HistogramTransformation.

Since NB stars appear white, to give them some color, I extracted them with StarXTerminator and used PixelMath (R/K: Halpha, G = OIII, B = OIII), HistogramTransformation, and SCNR before combining them back into the nebula frame.

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Sky plot

Sky plot

Histogram

M20 Trifid Nebula (HSO), galactic_surfer