Celestial hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)  ·  Contains:  B85  ·  M 20  ·  NGC 6514  ·  Sh2-30  ·  Trifid nebula
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M 20, the Triffid Nebula, HOH-beta, Stephen Garretson
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M 20, the Triffid Nebula, HOH-beta

Getting plate-solving status, please wait...
M 20, the Triffid Nebula, HOH-beta, Stephen Garretson
Powered byPixInsight

M 20, the Triffid Nebula, HOH-beta

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Description

Here is M 20 in color from narrowband images. I gathered an hour of OIII, SII, and H-beta last night to add to the 2 hours of Ha3.5 from a few days ago; did not use the SII data. I know there should be much more blue in the outer part of the nebulosity surrounding the tri-part core, but could not bring it out...at least not yet; my processing skills need a boost there.

Image is cropped from the full frame.

A colleague and I who both are playing with H-beta filters are experimenting with HOO rendering, but substituting H-beta for OIII on the blue channel on those targets that exhibit H-beta characteristics...with interesting results. So... HOH-beta [?]

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M 20, the Triffid Nebula, HOH-beta, Stephen Garretson