M101 The Pinwheel Galaxy - HaRGB composition (patrice_so)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: M 101 · NGC 5457 · NGC 5461 · NGC 5473 · NGC 5477

M101 The Pinwheel Galaxy - HaRGB composition, patrice_so

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M101 The Pinwheel Galaxy - HaRGB composition

Revision title: Reprocessed with pixinsight

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

Powered byPixInsight

M101 The Pinwheel Galaxy - HaRGB composition

Revision title: Reprocessed with pixinsight

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

This is my 2023 Pinwheel Galaxy. This image results from 3 sessions using an ASI294MC Pro with an l-ultimate filter to get Ha and Oiii and a subsequent session using a uv-ir cut filter with the same setup in all other respect. This is my best image of M101 so far. The base layer is the RGB and I added the Ha and the Oii before adding a synthetic luminence layer on top and stars extracted from the RVB session.
I am aware that stars show a slight defect in collimation. Focus is slightly off as I was not using an EAF yet at the time of image capturing.
I hope that you enjoy it.

Original
B
Final
C

B

Title: Reprocessed version

Uploaded: ...

C

Title: Reprocessed with pixinsight

Description: This new version arise from the reprocessing the data aquired earlier this year using now Pixinsight. The Ha was added using the NBRGBCombination script. As a newbie to Pixinsight, I used the excellent youtube tutorial of Arnaud.

The outcome is much better than anything I was able to achieve using SIRIL and GIMP for post-processing.

Link to Arnaud's tutorial : https://www.youtube.com/watch?v=dBXU0jAYGVI

Uploaded: ...

Imagers of Switzerland
ZWO ASI 294MC PRO

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Status	Basic success
Started	...
Astrometry.net job	8247994
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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M101 The Pinwheel Galaxy - HaRGB composition

Revision title: Reprocessed with pixinsight

M101 The Pinwheel Galaxy - HaRGB composition

Revision title: Reprocessed with pixinsight

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M101 The Pinwheel Galaxy - HaRGB composition

Revision title: Reprocessed with pixinsight

M101 The Pinwheel Galaxy - HaRGB composition

Revision title: Reprocessed with pixinsight

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