Deep Sky Object in Summer
NGC6940 (Open Cluster in Vulpecula)
|Date & Time: ||Jul 26 2014, from 24:58 to 25:13 JST(+0900)
|Composed 4 shots with 5 minutes exposed|
|Optical: ||TAKAHASHI 16cm(6.3") epsilon (f=530mm, F3.3)
|with IDAS LPS-P1 light-pollution suppression filter|
|Auto-guided with TAKAHASHI EM-200 Equatorial & Meade Pictor 201XT
|Digital Camera: ||Canon EOS 600D (Remodeled)
|Location: ||Koumi town, Nagano pref.
|Camera Settings: ||Recording Format...14bit CCD-RAW, converted to 16bit TIFF(5184×3456)|
NGC6940 is an open cluster of about a hundred stars, found at about 4 degrees SW of the veil nebula in Cygnus.
The cluster is unexpectedly striking because it's positioned in front of dark nebula in summer's Milky Way.
You can appreciate the cluster with faint stars gathering dense in semicircle; it'll be a splendid view.
|NGC6940 / Open Cluster, type e, III 2 r|
|R.A.||20h 34m 36.0s (2000.0)|
|Dec.||+28° 18' 00" (2000.0)|
|Real Size||55 light yrs.|
|# of Stars||60|
|Distance||9380 light yrs.|
The cluster is about 9400 light years away from the solar system.