Deep Sky Object in Summer
NGC6210 (Planetary Nebula in Hercules)

Date & Time: Mar 19 2005, from 25:02 to 25:21 JST(+0900)
Composed 4shots with 4 minutes & 4shots with 1 minute exposed
Optical: VIXEN 20cm(3.9") VISAC (f=1800mm, F9.0)
Auto-guided with TAKAHASHI JP Equatorial & Meade Pictor 201XT
Digital Camera: Nikon D70 (Remodeled)
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...12bit CCD-RAW, converted to 8bit TIFF(3008×2000)
CCD Sensitivity...ISO1600

NGC6210 / Planetary Nebula, type II+IIIb
R.A.16h 44m 30.0s (2000.0)
Dec.+23° 49' 00" (2000.0)
Apparent Size20×13"
Real Size0.25×0.16 light yrs.
Distance2570 light yrs.
NGC6210 is a small planetary nebula about 4 degrees northeast from beta Her. The nebula has been elongated in east west direction, has a long axis of about 20 arc seconds or so. You can detect the nebula only with small scopes because of its brightness of 9.7, but it might be needed fairly high magnification to recognize its shape.

M57(Ring Nebula)

NGC6302(Bug Nebula)

Copyright(c) 2005 by Naoyuki Kurita, All rights reserved.
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