NGC 3576 Extracted-Emission-Line Image

[Alex Woronow]

I've been working on my PixInsight script that extracts pure emission lines from a set of SHORGB images. It produced this narrowband image, which also has an initial color mapping into something very close to the true colors of the narrowband emissions. This allows, among other things, using star colors to photometrically color-calibrate the image and eliminates the magenta stars or the oft-used transfer of stars from the RGB image into the narrowband image.
https://astrob.in/p0yp7i/0/

Anyway, click the link to go to the Astrobin larger, better image.

Any comments, criticisms, or suggestions are always welcomed.

Alex

[Francesco Meschia]

Hi Alex – that’s a great image! Would you be willing to share any details about your method?

Francesco

On Jun 25, 2022, at 10:15 AM, Alex Woronow <al...@faintlightphotography.com> wrote:

I've been working on my PixInsight script that extracts pure emission lines from a set of SHORGB images. It produced this narrowband image, which also has an initial color mapping into something very close to the true colors of the narrowband emissions. This allows, among other things, using star colors to photometrically color-calibrate the image and eliminates the magenta stars or the oft-used transfer of stars from the RGB image into the narrowband image.

<NGC3576_SHO_Lines_ModTrueColor photon thumbnail.jpg>https://astrob.in/p0yp7i/0/

Anyway, click the link to go to the Astrobin larger, better image.

Any comments, criticisms, or suggestions are always welcomed.

Alex

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<NGC3576_SHO_Lines_ModTrueColor photon thumbnail.jpg>

[Joseph Beyer]

Hi Alex,

I noticed an update to a script in Pixinsight in the last couple days that referred to magenta stars.  Is this the same one?

Joe  

On Jun 25, 2022, at 10:15 AM, Alex Woronow <al...@faintlightphotography.com> wrote:

I've been working on my PixInsight script that extracts pure emission lines from a set of SHORGB images. It produced this narrowband image, which also has an initial color mapping into something very close to the true colors of the narrowband emissions. This allows, among other things, using star colors to photometrically color-calibrate the image and eliminates the magenta stars or the oft-used transfer of stars from the RGB image into the narrowband image.

<NGC3576_SHO_Lines_ModTrueColor photon thumbnail.jpg>https://astrob.in/p0yp7i/0/

Anyway, click the link to go to the Astrobin larger, better image.

Any comments, criticisms, or suggestions are always welcomed.

Alex