Hello,
During 4 non consecutive nights, I was able to capture this image of the Horse Head in Narrow Band.
The image:
Ha: 13 x 1200sec bin 1x1
S2: 6 x 1200sec bin 1x1
O3: 6 x 1200sec bin 1x1
Scope: TMB 92 f/5.5
Processing and pre-processing: PixInsight
The full resolution result is
here
Thanks for looking,
Fernando