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
(https://cdn.astrobin.com/thumbs/62wu_2DeWuT0_16536x0_b9muqi8S.jpg)
That turned out really nice Carole!
Roberto
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