NGC 436, NGC 457 (Samuel Kohler)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: 34 Cas · NGC 436 · NGC 457 · Owl Cluster · The star φ Cas

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NGC 436, NGC 457

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NGC 436, NGC 457

Clear nights were sparse these days and when good conditions set in on a bright moonnight between two fronts that brought precipitation, I went for these two lovely open clusters near the constellation of Cassiopeia.
Both NGC 436 and NGC 457 are located in the Perseus arm of our galaxy and were discovered by Mr. William Herschel in the 18th century while NGC 436 is believed to be approximately four times older than NGC 457.

NGC436, Mel6
NGC457, Mel7, dragonfly cluster, owl cluster

11/23/2023, 7.45pm, 47° N, 3130 ft, wind moderate, temperature 2°C, dewpoint -3°C, humidity 68%
lights 145x 90sec, filter: HEUIB-II (37 flats, 37 flatdarks, 50 darks)

integration: 3h 37min 30sec
sensor: SONY Exmor IMX183CLK-J/CQJ-J (ASI183MC)
lens: FRA400, f/3.9 at 280mm
mount: EQ6-R Pro
guiding: AR0130CS (ASI120MM) & OAG
preprocess: Pleiades Astrophoto, PixInsight
postprocess: Pleiades Astrophoto, PixInsight

Open Star Clusters

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Status	Advanced success
Started	...
Astrometry.net job	8900212
PixInsight job	HBTLQLE41RPG8JBV7JOKE8EGCW01DA9T
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	01h18m24s.24
RA (top/left)	01h07m52s.91
RA (top/right)	01h22m56s.42
RA (bottom/right)	01h28m59s.60
RA (bottom/left)	01h13m32s.10

Dec (center)	+58°22′48″.7
Dec (top/left)	+58°15′54″.8
Dec (top/right)	+57°07′58″.8
Dec (bottom/right)	+58°26′26″.2
Dec (bottom/left)	+59°37′01″.5

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NGC 436, NGC 457

NGC 436, NGC 457

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NGC 436, NGC 457

NGC 436, NGC 457

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