M15 with IFN in RGB (David Payne)

Celestial hemisphere: Northern · Constellation: Pegasus (Peg) · Contains: BO Peg · FO Peg · FQ Peg · FT Peg · FW Peg · GW Peg · HD204571 · HD204712 · HD204862 · HD205061 · HD205127 · HD205354 · M 15 · NGC 7068 · NGC 7078 · PGC 1393166 · PGC 1394165 · PGC 1394599 · PGC 1395049 · PGC 1395537 · PGC 1396066 · PGC 1396403 · PGC 1396993 · PGC 1398318 · PGC 1398561 · PGC 1400212 · PGC 1400743 · PGC 1401035 · PGC 1401947 · PGC 1401965 · And 36 more.

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M15 with IFN in RGB

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M15 with IFN in RGB

M15 Globular Cluster with IFN in PegasusM15 Globular Cluster with IFN - Aug 2022
Televue 127is - AIS6200MM
A-P 1100 GTO AE, Antlia Pro LRGB
L (56 x 120s exposures, Bin 1, Gain 100)
R,G,B: (3 x 35 x 120s exposures, Bin 1, Gain 100)
Total Integration Time = 5.4 hours
Processed in Pixinsight
This globular cluster resides in Pegasus, and is one of the densest cluster in the sky. It is also said to contain a planetary nebula, although I am unable to determine which "blue" star it is. This cluster is also "surrounded" by IFN, reflecting back light off the stars and creating faint clouds across the image. These molecules also create a blue halo off the bright blue star to the left of the cluster.
This was my second globular cluster and was a bit of an experiment. In my M13, I shot my luminance frames at a gain of 0 to retain dynamic range to ensure that I kept the core of the cluster resolvable. For this M15 shot, I moved to a gain of 100, with less exposure time and more frames to better capture the IFN. However, the sacrifice this makes in terms of smaller dynamic rnage meant that the core of the cluster was too bright in this image, and the cluster is not resolved right to the core. The IFN is resolved nicely though. Interestingly, the IFN was barely visible on my colour filter frames.

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Status	Advanced success
Started	...
Astrometry.net job	6197651
PixInsight job	7XKMMUF8KSGSWVKAY1H7TWPW2RZQ60I5
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h30m04s.842
RA (top/left)	21h35m38s.738
RA (top/right)	21h24m07s.642
RA (bottom/right)	21h24m32s.663
RA (bottom/left)	21h36m00s.219

Dec (center)	+12°17′13″.36
Dec (top/left)	+13°12′29″.27
Dec (top/right)	+13°03′02″.76
Dec (bottom/right)	+11°21′24″.21
Dec (bottom/left)	+11°30′44″.66

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