Quote:
Originally Posted by Tandum
Have you tried another target with the S2 doug? What you have there looks great. I don't see enough of Eta from here to try it but this is a half dozen 20minute subs of helix binned X2 out of the qhy9/10" newt and it is truely crap  For me S2 is the hardest to get anything at all. |
Haven't tried the SII filter out on anything else yet - gear changes and weather working against me.
I'm not convinced that my SII Eta image is really all SII emission!
The object is so Ha-heavy that there must be some spill from all that data.
It would be nice to source some book or online resource that provided the relative proportions of Ha, OIII and SII in various objects.
Doug
