Deep Sky Object in Summer
Sh2-54 (Diffused Nebula in Serpens)

Date & Time: Aug 10 2013, from 21:46 to 22:30 JST(+0900)
Mosaic of 2 flames that are RGB-composed from 6min.×4shots each
Optical: (GB image) BORG 60ED+Reducer (f=297mm, F5.0) with Moon & Skyglow filter
(R image) TAMRON SP 300mmF2.8 (Stop: F2.8) with Astronomik CLS-CCD & R64 filters
Auto-guided with TAKAHASHI EM-200 Equatorial
Digital Camera: (GB image) Canon EOS 600D (Remodeled)
(R image) Canon EOS 550D (Remodeled)
Location: Koumi town, Nagano pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(5184×3456)
CCD Sensitivity...ISO800(GB image), ISO1600(R image)

Sh2-54 / Diffused Nebula, type 1 E
R.A.18h 18m (2000.0)
Dec.-12° 14' (2000.0)
Apparent Sizeabout 120'
Real Size -
Magnitude -
Other IDsLBN71, LBN72
A vast and dimmed reddish gaseous region of Sh2-54 is spread just north of M16, the nebula has an apparent span of about 2 degrees. Although you can detect M16 with your own eyes as a white cloudy object, Sh2-54 is not a naked eye celestial object. The nebula is one of lamps of gigantic hydrogen gas distributed along the galactic equator; actually M16 and Sh2-54 form one-body gaseous matter. You can detect only M16 with your eyes because it's fairly brighter than other surrounding nebulae.

Around Sh2-24, Sh2-33


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