25 March  2016

     Hubble's Variable Nebula 

                                               
      

 By      Steve Pastor
 

  Hubble's Variable Nebula (NGC 2261) is a small 2 x 4 arcminute nebula found in the constellation Monoceros.
 One suggestion proposed for the observed variability is due to dust clouds near R Monocerotis  periodically changing the nebula's illumination.
 The image was a total of 6 hr 20 min exposure with a 12.5” f/9 RCOS telescope and SBIG STF8300c camera (OAG with ST-i)
on a Paramount ME (19 x 1200 sec lights @-15o C; 30 darks; 128 bias; 128 flats); Software: Sky X, MaxIm DL6, PixInsight 1.8.4.1195.


 

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