Clamshell Nebula Sh2-119

[Carole]

Haven't done any imaging for a couple of months as not set up for small galaxies. 
Also, I seem to have done all the popular nebulae that I can do from home, so am now doing the less well known, but fainter targets.  This is the Clamshell Nebula (to the left of the North America nebula). 

I did take some Oiii and Sii but could not find any signal at all in Oiii and Sii was only faint, so didn't show up when combining with Ha, so I processed as HaRGB. 

Samyang lens and Atik460EX on HEQ5
Ha 13 x 900 (3h 15m
RGB 11 x 125secs binned x 2 @ 23mins each
Total imaging time 3hours 24mins

[Roberto]

That turned out really nice Carole!

Roberto

[Carole]

Thanks Roberto. 

I have been working on an SHO version, as I tried to drag some detail out of the Oiii and Sii using a method I learnt from Olly Penrice, so have also posted an SHO version.

Carole