NGC 188 Several Versions (Alan Brunelle)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: NGC 188 · PGC 1829 · PGC 3005 · PGC 3085913 · PGC 3085914 · PGC 3085930 · PGC 3085931 · PGC 4542 · PGC 5760 · PGC 842 · PGC 97502

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NGC 188 Several Versions

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NGC 188 Several Versions

NGC 188 is a nice cluster near Polaris. Certainly its position challenged my guiding since PHD did not even allow me to calibrate at this elevation.

I include a simple PI low autostretched (equivalent) version of the stacked file for those who are interested in what the early stacked data look like. This may be particularly useful for those who use the same telescope and similar camera as I, or who are interested in acquiring that gear for their rig. I am not sure that this is the best subject for that though. IN any case, I welcome any feedback on what I could do better, be it different sub exposure, etc.

I like the subject looking through a hole in the IFN towards us. My camera uses a C-sized sensor, and from this field of view, I wish I had a full-frame camera.

I created (or botched) an attempt to reduce the halos that came through on the brightest stars, of which there are a good deal in this view. Several methods I found online were applied here, but many of the halos are within IFN, overlap IFN or are on some sort of gradient, which appears to challenge any method. So I include as the final version the one where I just caved and left the halos.

Original
B
C
Final
E

B

Description: Processed to reduce halos

Uploaded: ...

C

Description: This version without halo reduction

Uploaded: ...

E

Description: Viewing the first revisions, it appeared to me to be too heavily weighted toward the IFN. I altered the black point.

Uploaded: ...

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Status	Advanced success
Started	...
Astrometry.net job	3878195
PixInsight job	7DMRZSM8AWKYXER9RF0VKWPT32HHD1YW
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	00h49m14s.97
RA (top/left)	00h58m38s.72
RA (top/right)	23h44m14s.43
RA (bottom/right)	00h32m38s.96
RA (bottom/left)	01h47m20s.60

Dec (center)	+85°18′40″.7
Dec (top/left)	+84°00′54″.7
Dec (top/right)	+85°24′05″.9
Dec (bottom/right)	+86°35′30″.1
Dec (bottom/left)	+84°52′29″.0

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NGC 188 Several Versions

NGC 188 Several Versions

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NGC 188 Several Versions

NGC 188 Several Versions

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Sky plot

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