13  December  2016
 
  M42, Orion Nebula

                                                                                                                    
    


 By   Ji Soo Lee
www.flickr.com/photos/jisoolee )

The Orion Nebula (also known as Messier 42) is a diffuse nebula situated in the Milky Way, being south of Orion's Belt
 in the constellation of Orion. It is one of the brightest nebulae, and is visible to the naked eye in the night sky.
M42 is located at a distance of 1,344 ± 20 light years and is the closest region of massive star formation to Earth.
The M42 nebula is estimated to be 24 light years across. It has a mass of about 2000 times the mass of the Sun.
Older texts frequently refer to the Orion Nebula as the Great Nebula in Orion or the Great Orion Nebula.

Object data :M42, Orion Nebula
Date : 2015.09 ~ 2016.10
Location : Hongcheon-gun . KOREA
Optics : FSQ-106EDXIII (F/3.6) / x0.73 645
Mount : SKYWATCHER EQ8 PRO
Camera :  QHY23_M 
Guiding : Orion SSAG, Guiding by PHD2 autoguider
  Exposure  :   Ha 900 mim ( 90x10 min. bined 1x1)   
             SII 500 mim ( 50x10 min. bined 1x1) 
            OIII 500 mim ( 45x10 min. bined 1x1)
             Total Time (30H50M)

             SII,Ha & OIII are mapped to RGB respectively
Processing :  Maxim DL 5, Photoshop CS 5 

     

 

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