Deep Sky Object in Summer
NGC6642 (Globular Cluster in Sagittarius)
|Date & Time: ||Sep 20 2014, from 19:43 to 19:58 JST(+0900)
|Composed 6 shots with 3 minutes exposed|
|Optical: ||Meade 25cm(10") Schmidt-Cassegrain with a conversion lens (f=1600mm, F6.3)
|with BaaderPlanetarium Moon&Skyglow filter|
|Auto-guided with Meade LX200 Equatorial & Pictor 201XT
|Digital Camera: ||Canon EOS 600D (Remodeled)
|Location: ||Ooizumi, Hokuto city, Yamanashi pref.
|Camera Settings: ||Recording format...14bit CCD-RAW, converted to 16bit TIFF(5184×3456)|
NGC6642 is a small globular cluster lying only a degree northwest M22, a splendid globular cluster in Sagittarius.
NGC6642 has a size of about only 6 arc minutes, not a major object in this star field.
The constellation of Sagittarius has includes the center of Galaxy, uncountable globular clusters have distributed in it.
|NGC6642 / Globular Cluster|
|R.A.||18h 31m 54.3s (2000.0)|
|Dec.||-23°28' 35" (2000.0)|