O111 ic443

[libraryman]

I'm grabbing O111 on the jellyfish nebula, is there much to be had or is it just better to stick with HA?

It looks farther weak, A 20 min just shows a bit on the edge!!!

Not tried Sulphur yet but I'm at 17 x 20mins on the O111 does Sulphur add much to the nebulosity?

Ray

[riklaunim]

I did only H-alpha for it, but some other emission is there: http://bf-astro.com/ic443-444sho.htm

20 min exposures seems extremely long. I used 10 mins for Simeis 147, while Jellyfish is easier to catch (but still way fainter than for example rosetta).

[libraryman]

Cheers for the link, clearly I can use the O111.

Ray