NGC869 and NGC884 - Perseus Double Cluster in LRGB (Cfosterstars)

Celestial hemisphere: Northern · Constellation: Perseus (Per) · Contains: 7 Per) · 7 chi Per · Double cluster · HD13659 · HD13716 · HD13758 · HD13784 · HD13831 · HD13841 · HD13854 · HD13866 · HD13890 · HD13900 · HD13910 · HD13969 · HD14012 · HD14051 · HD14052 · HD14053 · HD14092 · HD14134 · HD14143 · HD14162 · HD14184 · HD14186 · HD14210 · HD14250 · HD14270 · HD14289 · HD14330 · And 22 more.

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NGC869 and NGC884 - Perseus Double Cluster in LRGB

Revision title: Fixed the green blotch and increase color saturation

Powered byPixInsight

NGC869 and NGC884 - Perseus Double Cluster in LRGB

Revision title: Fixed the green blotch and increase color saturation

NGC869 and NGC 884 - The Double Cluster in Perseus in LRGB. I have not done that many star clusters, but this is one of the most popular to image. This was my last image with my EON APO with my old ASI1600MM-COOL before swapping to my new ASI294MM-PRO camera.

The reprocessing was done to utilize new processing flows and scripts. The order of MUREDenoise and DBE was corrected. I used BlurXterminator and NoiseXterminator scripts for deconvolution and noise reduction.

The Double Cluster (also known as Caldwell 14) consists of the open clusters NGC 869 and NGC 884 (often designated h Persei and χ Persei, respectively), which are close together in the constellation Perseus. Both visible with the naked eye, NGC 869 and NGC 884 lie at a distance of 7,500 light years.

NGC 869 has a mass of 3,700 solar masses and NGC 884 weighs in at 2,800 solar masses; however, later research has shown both clusters are surrounded with a very extensive halo of stars, with a total mass for the complex of at least 20,000 solar masses. Based on their individual stars, the clusters are relatively young, both 12.8 million years old. In comparison, the Pleiades have an estimated age ranging from 75 million years to 150 million years.

There are more than 300 blue-white super-giant stars in each of the clusters. The clusters are also blueshifted, with NGC 869 approaching Earth at a speed of 39 km/s (24 mi/s) and NGC 884 approaching at a similar speed of 38 km/s (24 mi/s). Their hottest main sequence stars are of spectral type B0. NGC 884 includes five prominent red supergiant stars, all variable and all around 8th magnitude: RS Persei, AD Persei, FZ Persei, V403 Persei, and V439 Persei.

Original
B
Final
C

B

Title: Full Reprocessing with better color correction

Uploaded: ...

C

Title: Fixed the green blotch and increase color saturation

Uploaded: ...

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Status	Advanced success
Started	...
Astrometry.net job	7328847
PixInsight job	QCQPCIN4IMTC5Q9OH7C2LO3D2W90ZSQ0
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h20m31s.78
RA (top/left)	02h26m11s.85
RA (top/right)	02h14m49s.25
RA (bottom/right)	02h15m02s.15
RA (bottom/left)	02h26m03s.88

Dec (center)	+57°14′13″.2
Dec (top/left)	+57°48′21″.7
Dec (top/right)	+57°47′54″.3
Dec (bottom/right)	+56°39′09″.3
Dec (bottom/left)	+56°39′33″.4

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NGC869 and NGC884 - Perseus Double Cluster in LRGB

Revision title: Fixed the green blotch and increase color saturation

NGC869 and NGC884 - Perseus Double Cluster in LRGB

Revision title: Fixed the green blotch and increase color saturation

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NGC869 and NGC884 - Perseus Double Cluster in LRGB

Revision title: Fixed the green blotch and increase color saturation

NGC869 and NGC884 - Perseus Double Cluster in LRGB

Revision title: Fixed the green blotch and increase color saturation

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Description

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C

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