Sh2-151, SH2-157. SH2-162

18мар

Five molecular clouds are part of the Sh 2-151 complex and have a total of 29 thousand solar masses. About 700 solar masses has been ionised by an unseen star that is likely obscured by dust in one of the molecular clouds. The northern portion of Sh 2-157 (Sim 13, sometimes known as Sh 2-157a) is a ring nebula around the Wolf-Rayet star WR 157, in the Basel 3 star cluster that is in turn part of the Cas OB2 association.  The southern portion of Sh 2-157 (Sim 14) may be ionised by stars not belonging to Basel 3. Sh 2-162: is the Bubble nebula, NGC 7635, a circular shell around the O6.5 IIIf star BD +60°2522. The nebula also contains the infrared cluster [BDS2003] 44.

Imaging telescopes or lenses: Canon FD 300mm 2.8
Imaging cameras: SBIG STF-8300M
Mounts: ASA DDM60Pro
Software: PixInsight,  photoshop,  MaxPilote
Filters: Astrodon Ha 5nm,  Astrodon OIII 5nm
Resolution: 1600×1175
Dates: Feb. 6, 2015
Frames:
Astrodon Ha 5nm: 15×1200″ bin 1×1
Astrodon OIII 5nm: 9×1200″ bin 1×1
Astrodon SII 5nm: 9×1200″
Integration: 11.0 hours
Avg. Moon age: 16.58 days
Avg. Moon phase: 96.34%
Author: Jyrki

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