Deep Sky Object in Summer
NGC6309 (Planetary Nebula in Ophiuchus)

Date & Time: Apr 28 2007, from 24:49 to 25:01 JST(+0900)
Composed 4 shots with 3 minutes exposed
Optical: TAKAHASHI 12.5cm(4.9") fluolite refractor with conversion lens (f=1400mm, F11.2)
Auto-guided with VIXEN ATLUX Equatorial & Meade Pictor 201XT
Digital Camera: Fujifilm FinePix S2Pro
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...12bit CCD-RAW, converted to 16bit TIFF(3024×2016)
CCD Sensitivity...ISO1600, White Balance...Auto

NGC6309 / Planetary Nebula, type IIIb+VI
R.A.17h 14m 04.5s (2000.0)
Dec.-12° 54' 41" (2000.0)
Apparent Size16.0"
Real SizeN/A
NGC6309 is a compact planetary nebula about 3 degrees NNE from eta Oph. The nebula has a size of about 16 arc seconds and 10th magnitude in visual brightness, and a shape of elongated in north south direction. You can appreciate the figure like this photograph with high-powered telescopes.

NGC6302(Bug Nebula)


Copyright(c) 2007 by Naoyuki Kurita, All rights reserved.
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