Deep Sky Object in Winter
Sh2-239 (Emission Nebula in Taurus)
|Date & Time: ||Jan 9 2016, from 22:25 to 23:37 JST(+0900)
|Composed 8 shots with 10 minutes exposed|
|Optical: ||Meade 25cm(10") Schmidt-Cassegrain with a conversion lens (f=1600mm, F6.3)
|with BaaderPlanetarium UV/IR cut filter|
|Auto-guided with Meade LX200 Eqatorial & Pictor 201XT
|Digital Camera: ||Canon EOS 600D (Remodeled)
|Location: ||Ooizumi, Hokuto city, Yamanashi pref.|
|Camera Settings: ||Recording Format...14bit CCD-RAW, converted to 16bit TIFF(5184×3456)|
Sh2-239 is a minor and compact emission nebula positioned at about 4 degrees NNW from the Aldebaran, alpha Tau.
We can find out the nebula in the Hyades apparently, actually the nebula is three times farther than the Hyades.
|Sh2-239 / Emission Nebula, type 3 E|
|R.A.||04h 31m 21.0s (2000.0)|
|Dec.||+18°07' 00" (2000.0)|
|Real Size||0.7 light yrs.|
|Distance||460 light yrs.|
We can observe the Sh2-239 as an emitted part of the dark nebula of LDN1551 with a T Tauri-tyed embryo star.
The brightest region of Sh2-239 is catalogued as the Herbig-Haro object HH102, which has the active jet-structure of the inter-stellar gaseous matter.