Crab Nebula (Messier 1) HaLumSII

3 hours of SII added in to the previous pic. Very attractive - as unbelievably violent cosmic events go. Just have oxygen (OIII) to capture now.

 

Ha (Red), Sulphur (Green), Lum (assigned Blue +Luminence)

 

lum (75 min) + Ha (180 mins) + SII (160 mins). Usual set-up: c9.25/FR.63, Atik460ex, AZEQ6, OAG/ZWOASI120mm-s, Baader filters.

 

Image features in Feb 2016 Astrophoto Magazine astrophotomag.com/issue25/#/16

Done