OIII in The Rosette?

[daz]

Is there any OIII emission in the core of the Rosette?

I grabbed 7x1200s the other night and there is (excuse the technical term) [removed word] all in there!

I've seen images with OIII mapped in, but I am guessing this is in the outer regions?

[Tim]

Tiny bit, this is a 1200 sec single sub. Are you using the monster on it? There's some funky bits around the main cluster

[peter shah]

if you are expecting the same as you would get in Halpha...then No....but the amount of O3 i it is quite spread out and does look quite even across the frame. Its the richer S2, around the edge of the object that make the centre O3 pop out.

As rule you will need to expose loads more in S2 and O3 than Ha.

[daz]

No, ED80 Tim

Thanks guys - longer and and deeper is then!!