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NGC 869-884 / Double Cluster

Classification: Open Double Cluster
Constellation: Peresus (PER)
Object Location: Ra 02h 21m 50s Dec +57° 13’21” (current)(Center)
Size & Distance: Each about 18.x 18.0 Apx 7500 light years.

Date & Location: 09-06-2015 Palomar Mountain, CA.
Exposure: RGB 7 ea. @200s (bin 1x1)
Optics: Telescope Engineering Company APO110FL @ f/5.74, 631mm
Mount: Astro-Physics 1200 GTO / ATS 10x36 pier.
Camera: FLI-ML6303E @-30c / CFW2-7 / Guided by SBIG ST-I / w OAG.
Filters: Astrodon G2 RGB
Software: MaxImDL 6.09, Photoshop CS5, CCDStack 2.8

Notes: Sky conditions: Above average seeing, Light breeze, Temp 65°
Cropped Image Field of view is 67.7 x 105.3 arcmin.

NGC 869 and NGC 884 The Double Cluster (also known as Caldwell 14) is the common name for the naked-eye open clusters which are close together in the constellation Perseus. NGC 869 and NGC 884 both lie at a distance of 7500 light years. NGC 869 has a mass of 3700 solar masses and NGC 884 weighs in at 2800 solar masses; The clusters are relatively young, both 12.8 million years old.