M15 - Pegasus Cluster & Halpha streams (Matthias Olhoeft (Ole))

Celestial hemisphere: Northern · Constellation: Pegasus (Peg) · Contains: HD204509 · HD204571 · HD204712 · HD204844 · HD204862 · HD205061 · HD205127 · M 15 · NGC 7068 · NGC 7078 · PK065-27.1

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M15 - Pegasus Cluster & Halpha streams

Revision title: HaLRGB with stronger Halpha

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

Powered byPixInsight

M15 - Pegasus Cluster & Halpha streams

Revision title: HaLRGB with stronger Halpha

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

Hello everyone,
I found the Pegasus cluster very exciting for a long time, as it is beautifully embedded in the molecular clouds of the Pegasus region and thus, in my view, offers a more exciting image composition than, for example, the much more popular globular cluster M13.
In addition, I had read a publication that M15 in particular contains a particularly large number of hot blue stars. This made me wonder whether there could be Halpha emissions due to the ionizing effect of UV radiation. The planetary nebula, located near the core of M15, could also be named in the annotated version.
I had not yet found any pictures on Astrobin or any basic statements on this subject and started the (self-)experiment.
The conditions were not optimal, since the Halpha imaging were made shortly before the full moon and therefore, despite 6nm, there was of course a lot of unwanted "bycatch". After a very tough processing and countless attempts I came to the following result.
Even if it is quite possible for my visual impression that the filaments shown could be assigned to the Halpha, of course I have no scientific explanation for this.
Does anyone of you know anything about astrophysics who can confirm that it really is Halpha and not artifacts resulting from the recording session and image processing?

B

Title: LRGB only

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D

Title: Halpha only

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E

Title: Halphy only invert

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H

Title: HaLRGB with stronger Halpha

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J

Title: Halpha only with stronger intensity

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Status	Advanced success
Started	...
Astrometry.net job	8396529
PixInsight job	CSCAQ0463R7FBM0FEFJTW3Z5U0FK6IUI
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h29m48s.15
RA (top/left)	21h25m20s.24
RA (top/right)	21h26m51s.80
RA (bottom/right)	21h34m13s.31
RA (bottom/left)	21h32m46s.10

Dec (center)	+12°06′13″.7
Dec (top/left)	+13°17′06″.2
Dec (top/right)	+10°40′01″.0
Dec (bottom/right)	+10°55′12″.2
Dec (bottom/left)	+13°32′18″.8

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M15 - Pegasus Cluster & Halpha streams

Revision title: HaLRGB with stronger Halpha

M15 - Pegasus Cluster & Halpha streams

Revision title: HaLRGB with stronger Halpha

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M15 - Pegasus Cluster & Halpha streams

Revision title: HaLRGB with stronger Halpha

M15 - Pegasus Cluster & Halpha streams

Revision title: HaLRGB with stronger Halpha

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E

H

J

Sky plot

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