Deep Sky Object in Summer
M14 (Globular Cluster in Ophiuchus)


Click on image to enlarge

Date & Time: May 3 2021, from 25:54 to 26:14 JST(+0900)
Composed 6 shots with 4 minutes exposed
Optical: Meade 25cm(10") Schmidt-Cassegrain with conversion lens (f=1600mm, F6.3)
with BaaderPlanetarium Moon&Skyglow filter
Auto-guided with Meade LX200 Equatorial & Lacerta M-GEN
Digital Camera: Nikon D810A
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(4080×4080)
Device Size...20×20mm
Sensitivity...ISO4000, White Balance...Daylight



M14 (NGC6402) / Globular Cluster, type VIII
R.A.17h 37m 35.9s (2000.0)
Dec.-03° 15' 00" (2000.0)
Apparent Size3.0'
Real Size55 light yrs.
Magnitude7.7
Distance23,000 light yrs.
M14 is a small sized globular cluster, easternmost in three globulars with Messier's number (M10, M12 and M14) in a pentagon of Ophiuchus. M14 is lying at the west coast of the Milky Way in summer; so uncountable fine stars surround the cluster.
The cluster has a fairly stellar density, you might need a telescope over 4" to resolve the individual stars. The cluster has a real size of about 55 light years and a distance of 23 thousand light years.




M13(The Hercules Cluster)

M19


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