Deep Sky Object in Summer
Cr399 (Open Cluster in Vulpecula)

Date & Time: Jul 26 2014, from 24:29 to 24:45 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)
CCD Sensitivity...ISO1600

Cr 399 / Open Cluster, type III 3 m
R.A.19h 25m 24.0s (2000.0)
Dec.+20° 11' 00" (2000.0)
Apparent Size60'
Real SizeN/A
# of Stars40
Magnitude -
Cr399 is a very scattered open cluster about 8 degrees south of bata Cygni, Al bireo. Perhaps you can hardly feel this picture as an open cluster, but is impressive that 6 stars lined up in straight and a pentagon just south of the line through binoculars. Almost all of stars are about 6th magnitudes, the cluster is fairly detectable at the tip of head of the Cygnus.
This open cluster is often called "The Coat Hunger" from its unique shape. I encourage you to see the interesting body with your own eyes.

IC4756, NGC6633


Copyright(c) 2014 by Naoyuki Kurita, All rights reserved.
To top page To Deepsky in Summer index