M16 in Ha

[1ponders] (Paul) · #1 09-08-2008, 11:18 AM

M16; Astronomic Ha filter, 0.6FR, WO 72FD and ATiK 16IC. 3 images @ 900sec, median combined in IP and stretched in PS.

seeker372011 (Narayan) · #2 09-08-2008, 08:00 PM

waaay to go

larger image?

jjjnettie (Jeanette) · #3 09-08-2008, 08:11 PM

Peter Ward · #4 09-08-2008, 08:57 PM

Ah...you need to work on getting the focus right.

H-alpha usually means needle like stars.....sorry..I'm not seeing them here.

Larger image scale would also help for more meaningful feedback.

Stick with it!

Peter

[1ponders] (Paul) · #5 10-08-2008, 10:34 AM

Unfortunately that is as large as the image goes. It is full size off the ATiK chip (659x494 pixels).

Peter I think the biggest problem with my focusing was the cheap FR I was using. I went back and forwards quite a few time trying to nail the focus but just couldn't quite get there even with minimal movements of the 10:1 focuser. It's a shame really as the seeing was moderately good that night. I'll use my WO next time even though it won't reduce as much as I wanted on the night.