Horseshoe and Yin Yang Clusters (John Butler)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: 44 Cas · NGC 659 · NGC 663 · The star 44Cas

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Horseshoe and Yin Yang Clusters

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Horseshoe and Yin Yang Clusters

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Cribbed from the Internet:

IC 155 is a nonexistent object in Cassiopeia (RA 01 47 27.6, Dec +59 47 09)

Historical Identification: Per Dreyer, IC 155 (Max Wolf [(AN) 3214], 1860 RA 01 38 00±, NPD 30 55±) is "very faint, considerably large, diffuse". The position precesses to RA 01 47 27.6, Dec +59 47 09 (whence the position above), but there is nothing there (NED lists the position as RA 01 47 32.3, Dec +60 36 39, but that is incorrect). Corwin states that Wolf gives the position three times in his paper, so it cannot be due to an error in reduction or transcription, and he suspects that it may be one of the earliest examples of a plate defect being mistaken for a nebula.

Original
B
Final
C

B

Description: Reprocessed like m-39.
Then added a .3 SCNR of Green.

Uploaded: ...

C

Description: Shifted red left a bit and slight curves transformation S curve.

Uploaded: ...

Northeast Imagers

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Status	Advanced success
Started	...
Astrometry.net job	2228337
PixInsight job	FI8BUXXWP6O5YO7XT2S6FPJZ4SE65MCT
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	01h45m22s.83
RA (top/left)	01h53m05s.70
RA (top/right)	01h39m09s.60
RA (bottom/right)	01h37m51s.49
RA (bottom/left)	01h51m21s.15

Dec (center)	+60°55′02″.6
Dec (top/left)	+61°16′59″.2
Dec (top/right)	+61°34′46″.9
Dec (bottom/right)	+60°31′35″.8
Dec (bottom/left)	+60°14′15″.4

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Horseshoe and Yin Yang Clusters

Horseshoe and Yin Yang Clusters

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Image Index:

Contribution Index (beta):

Horseshoe and Yin Yang Clusters

Horseshoe and Yin Yang Clusters

Equipment

Acquisition details

Description

Comments

Revisions

B

C

Sky plot

Histogram

In these public groups

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