Snapped these single exposure stills last weekend at Mt Pinos using a Contax/Zeiss 200mm/f2 ApoSonnar lens and my Gen 3 unfilmed WP image tube.
Decided to give a 6nm Astronomik H-alpha filter a try. The results for me at best show a tiny contrast improvement over the Astronomik 12nm H-alpha filter that I have used previously. Camera exposure settings require a higher ISO but the results are indeed a bit better. Once again used the Sony A7S.
Here are the results:
N American & Pelican Nebs (30 sec, 80 ISO)
Elephant Trunk Neb (30 sec, 100 ISO)
Heart Nebula (30 sec, 80 ISO )
Soul Nebula (30 sec, 100 ISO)
Veil Nebula (30 sec, 100 ISO)
Gamma Cygni Complex (30 sec, 80 ISO)
Cederblad 214 (30 sec, 100 ISO)