Deep Sky Object in Winter
Barnard's Loop (Sh2-276 in Orion)
|Date & Time: ||Jan 3 2016, from 23:30 to 24:29 JST(+0900)
|Mosaic of 2 flames of 5min.×6shots|
|Optical: ||BORG 45EDII, with a conversion lens (f=227mm, F5.1)
|with IDAS LPS-P1 Light-pollution suppression filter|
|Auto-guided with TAKAHASHI JP Equatorial
|Digital Camera: ||Canon EOS 6D (Remodeled)
|Location: ||Ooizumi, Hokuto city, Yamanashi pref.
|Camera Settings: ||Recording format...14bit CCD-RAW, converted to 16bit TIFF(5472×3648)|
|Device Size...35×24mm, Sensitivity...ISO3200|
This image has been captured the whole figure of Barnard's Loop surrounding the southern region of Orion.
The Loop has a real size of 440 by 280 light years in ellipse. And I've enhanced red channel of this image intentionally.
|Barnard's Loop(Sh2-276) / Diffused Nebula, type E|
|R.A.||05h 52m (2000.0)|
|Real Size|| -|
|Distance||1500 light yrs.|
The Barnard's Loop is bright in northern region and can be taken clearer than southern part.
And this image shows you the extraordinary dimmed gaseous matter is distributed between the Great Orion Nebula (M42) and the outer shell of the Loop in southern region.
It's considered that the Barnard's Loop is a spreading hydrogen gas by a supernova explosion occurred around between the Great Orion Nebula and the Horse head Nebula about a million years ago.
And maybe the dimmed nebulosities may be left matter in a process of the diffusion of "Blast".
The Barnard's Loop has a catalogue number of Sh2-276, but it's a number of only northern regions, the southern remaining part has no identifying numbers.