Deep Sky Object in Summer
Blinking Planetary(NGC6826 in Cygnus)


Date & Time: Apr 28 2007, from 24:20 to 24:30 JST(+0900)
Composed 3 shots with 3 minutes exposed
Optical: TAKAHASHI 12.5cm(4.9") fluorite refractor with conversion lens (f=1400mm, F11.2)
Auto-guided with VIXEN ATLUX Equatorial & Meade Pictor 201XT
Digital Camera: Fujifilm FinePix S2 Pro
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




NGC6826 / Planetary Nebula, type IIIa+II
R.A.19h 44m 48.0s (2000.0)
Dec.+50° 31' 00" (2000.0)
Apparent Size27×24"
Real Size0.22×0.20 light yrs.
Magnitude8.8
Distance1690 light yrs.
NGC6826 is a small planetary nebula about 1.3 degrees east of theta Cygni, a tip star of Swan's western wing. The nebula has a diameter of 30 arc seconds and a visual brightness of 9th magnitude. The nebula looks almost oval figure and dimmed light is surrounding the central star. NGC6826 has a nickname of "The Blinking Plantary" maybe from its figure looks like an eye. You can distinguish the nebula from normal stars only with small telescopes, but it might be needed fairly larger scopes and high magnifying power to detect the central dwarf star. It's estimated the nebula is about 1700 light years away.

⇒ Display the spectral profile of NGC6826
(in new window)




Nebulosities around western Vulpecula

Crescent Nebula(NGC6888)


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