Deep Sky Object in Summer
M16 (Eagle Nebula in Serpens)


Date & Time: Apr 13 2013, from 27:06 to 27:47 JST(+0900)
Composed 6 shots with 8 minutes exposed
Optical: TAKAHASHI 16cm(6.3") epsilon (f=530mm, F3.3)
with Astronomik CLS-CCD filter
Auto-guided with TAKAHASHI JP Equatorial & SBIG STV
Digital Camera: Canon EOS 550D (Remodeled)
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(5184×3456)
Sensitivity...ISO1600




M16 (NGC6611) / Diffused Nebula & Open Cluster, type II 3 m n
R.A.18h 18m 48.0s (2000.0)
Dec.-13° 47' 00" (2000.0)
Apparent Size35×28'
Real Size46×37 light yrs.
# of Stars543
Magnitude6.4
Distance4600 light yrs.
M16 (NGC6611) is a magnificent diffused nebula in the constellation of Serpens, with a size of 30 arc minutes and a distance of about 4600 light years. The nebula is lying on top of an open cluster, both nebula and cluster have same number of M16=NGC6611. The nebula has a nickname "Eagle Nebula", very luminous with dark streaks of dust; a nursery of baby stars.
The dark streaks, which look like elephant's nose, are now very popular by a very clear photograph taken by the Hubble Space Telescope (HST). A magnified image below shows you the central region of the Eagle Nebula. This image barely captured the gaseous pillars like the HST's one.

⇒ Display the spectral profile of M16
(in new window)

Elephant's nose in center og M16 The "Elephant's Nose Structure" in M16

Dark gaseous pillars in center of M16 famous for HST's picture.
Left one of three pillars is fairly indistinct.




Wide field around Lagoon Nebula

M17(Omega Nebula)


Copyright(c) 2013 by Naoyuki Kurita, All rights reserved.
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