| Classification: |
Open cluster, IC349/353, Mel 22, vdB 23 |
| Constellation: |
Taurus (TAU) |
| Object Location: |
Ra 03h 47m 54s Dec +24° 09’3 |
| Size & Distance: |
110 x 110 Apx 440 light-years. |
|
| Date & Location: |
10-13-2015 Joshua Tree National Park, CA. |
| Exposure: |
RGB, 12 ea. @ 10min (bin 1x1) |
| Optics: |
Telescope Engineering Company APO110FL @ f/5.74, 631mm. |
| Mount: |
Astro-Physics 1200 GTOCP3 / ATS |
| Camera: |
FLI-MLx694 @-20c / CFW2-7 / Guided by SBIG ST-I / w OAG. |
| Filters: |
Astrodon G2 RGB |
| Software: |
MaxImDL 6.09, Photoshop CS5, CCDStack 2.82, Topaz Labs. |
|
| Notes: |
Sky conditions: Average seeing, Calm wind, Temps, mid to low 60°
Image Field of view is 54 x 68 arcmin.
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Pleiades or Seven Sisters (Messier 45 or M45), is an open star cluster containing middle-aged hot B-type stars located in the constellation Taurus. It is among the nearest star clusters to Earth and is the cluster most obvious to the naked eye in the night sky. The cluster is dominated by hot blue and extremely luminous stars that have formed within the last 100 million years. Dust that forms a faint reflection nebulosity around the brightest stars was thought at first to be left over from the formation of the cluster.
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