Thursday, October 13, 2016

Enchanting hydrogen

Today's gem nickname is Wizard, due to its shape that resembles medieval magician. The official nebula symbol is Sh2-142 at Sharpless catalog, and embedded open star cluster is NGC7380. Its pretty young cluster, stars age is estimated for 4-5 million years. The surrounding molecular cloud is excited to shine by DH Cephei binary eclipse system of two super hot stars of spectral types O5.5+O6. O type stars are very rare, it is estimated to be only 0.00003% of whole stars population. 
Also a few carbon stars have been recorded, you can try to look for them at enlarged picture. These will be as very red small spots.
Shot from my backyard with 130mm refractor. 500 minutes of Ha and 180 minutes of RGB.
Wizard with 180 minutes of RGB
 
Wizard with 500 minutes of H alpha


Combined HaRGB view

Clear skies!

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