Quote:
Originally Posted by ChrisD
I think you've got good data for the surrounding Ha.
This image shot by Trần Hạ confirms it:
Helix Nebula |
Hi Chris
Thanks for posting that... I think it's confirmed my suspicions. I've got something wrong in my flow.
The reason is that Trần has picked up the fainter outer shell (I haven't), but hasn't picked up as much background nebulosity (only some very very faint data), because there isn't really any of much significance. So that means my background Ha is something being introduced either from my flats, or editing workflow.
Back to the drawing board
thanks again