Quote:
Originally Posted by glend
Lee i would not bother with binning at your focal length. Nothing wrong with 150" subs just shoot twice as many. 
Tis the week for broadband now. You have no doubt seen Ray's NGC6727 image, which sets a benchmark for us all. The Helix Nebula is also high enough to image from about 11pm. I am shooting both those this week. |
Nyeh, 150s with OIII has read noise at about 23% of background with my skies, so it's not ideal.
I'm looking forward to having a good crack at the Helix, but it'll be a while yet for me... I have to get up at 6 for work and need all the beauty sleep I can get!
Quote:
Originally Posted by RickS
Looks pretty good, Lee. You got one of the jets quite clearly.
Cheers,
Rick.
|
Thanks Rick :-) I think I can make out two.
Quote:
Originally Posted by strongmanmike
Funny, when I saw this post I though, meah not much chop probably, Trifid never looks any good in NB  ...well, then I opened it in Astrobin and well, sheesh, looky at that  ...looks pretty good! Shame about the seeing, if that had been better t'would have looked most very excellenter 
Mike |
haha yeah. When I started this one it was perfectly placed for the time I wanted to start imaging, but the moon was out and about. I didn't recall seeing a NB trifid that I liked, and didn't expect much from it to be honest. I ended up with a palette that brings it closer to its broadband appearance which is probably why it's a bit more palatable.
Quote:
Originally Posted by Atmos
Looking good Lee! Have you mapped it in HSO?
It appears to have done really well with 150s subs, what gain did you use for such short NB subs?
|
Cheers Colin :-) I ended up with the following mix:
R = Ha
B = O*.3 + S*.7
G = S*.3 + O*.7
I used unity gain. I think at this point I'll pretty much stick with unity unless I find a good reason not to.
This one also has pretty heavy noise reduction. You can notice it especially around some of the stars where they start to look a bit milky for lack of a better term.