Deep Sky Object in Winter
Orion-Eridanus super bubble
(Sh2-245, Supernova remnant in Taurus to Eridanus)
|Date & Time: ||Jan 3 2016, from 21:32 to 23:15 JST(+0900)
|Mosaic of 3 flames of 3min.×10shots|
|Optical: ||BORG 60ED, with a conversion lens (f=245mm, F4.1)
|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|
Sh2-245 is an extraordinary dimmed emission nebula lying western Taurus towards northern Eridanus.
This image has captured a span of about 8×15 degrees, shows that the Sh2-245 is a stripe-shaped nebula with a length of over 20 degrees in north-south direction.
The nebula is a part of bow-shock of the "Orion-Eridanus super bubble" formed by plural supernova explosions occurred around Orion.
With the ultraviolet radiation from the Orion OB1 association, the nebula is ionized and emitting reddish H-alpha light.
You can see that lower glimmering molecular clouds are floating in almost all field of this image and intertwining with Sh2-245 elaborately.
|Sh2-245 / Supernova remnant, type5 E|
|R.A.(Rough position)||04h 01m (2000.0)|
|Dec.(Rough position)||+02°45' (2000.0)|
|Apparent Size||over 900×30'|
|Real Size|| -|
|Distance||680 light yrs.|
|Other IDs||LBN 839|
Jump to Wide field around the Orion-Eridanus super bubble