Deep Sky Object in Summer
Around M24 (Star cloud in Sagittarius)

Date & Time: Jul 11 2015, from 21:51 to 22:31 JST(+0900)
Mosaic of 2 flames of 5min.×4shots
Optical: BORG 60ED with a conversion lens (f=245mm, F4.1)
with IDAS LPS-P2-FF Light-pollution suppression filter
Auto-guided with TAKAHASHI EM-200 Equatorial
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

M24 (NGC6603) / Star Cloud in the Milky Way
R.A.18h 18m 23.9s (2000.0)
Dec.-18° 25' 00" (2000.0)
Apparent Sizeabout 90'
Real Size -
Distance16,000 light yrs.
M24 (no NGC No.) is a bright "star cloud" at the center of Milky Way in Sagittarius.
Strictly speaking, this object is not nebula nor star clusters, but Messier had registered this in the catalogue as a cluster with a size of 1.5 degree.
This naked eye cloud perhaps reminds you of a horse face turning upper left. Two dark nebulae in the cloud look like the eyes of horse are Barnard 92 (west side), and Barnard 93 (east side). And you can see a small reddish diffused nebula of IC1283 at the horse's throat.

M17(Omega Nebula)

M27(Dumb-bell Nebula)

Copyright(c) 2015 by Naoyuki Kurita, All rights reserved.
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