Af m27

[jjjnettie]

Another offering from Astrofest.
This one has 1hr and 55min of 5min subs @ ISO 400
ED80 and Canon 550D.
It's only just starting to get a hint of that lovely outer halo that Peter captured so well on his. I wonder how much more there would be if I'd upped the ISO to 800??

[RB]

First thing that crossed my mind too, but I think you were better off staying in ISO 400.
I prefer 400 than going to 800.
I hate the noise these cameras produce once pushed in these conditions.

Gorgeous colours in this one jjj.
Well done.

:thumbsup:

[Larryp]

Lovely image!

[jjjnettie]

Yep yep yep
I just need to capture a truck load more data at ISO400.
My Sculptor and M33 images suffered badly from noise because they were shot at ISO800. It took a lot of manipulating and smoothing to get them reasonable enough to post.

[Paul Haese]

Let me just say there is a lot of data in this image. I have just had a look and with some tricks you can bring out a lot of data and still have a noise free image.

This is good stuff from a DSLR. In the image I have here I can see the blue outer halo's (faintly but there). I think the clipping is the problem. PM me with your email JJJ and I will send it through with an explanation.

[jjjnettie]

Message received Paul. And thanks for the tips. I'll give it a repro very soon. :)

[stanlite]

looks loverly JJ ;)

[bokglob]

Hi Jeanette, just noticed this one, This is awsome! colour and inner detail are really really good:thumbsup::thumbsup: Not sure how much you can improve this with more processing, but listen to Pauls advice and you can't go wrong;) If you got yourself a cooled ccd....... P.S Waited till 3pm for car keys, thought they forgot me:sadeyes:

[peter_4059]

Very nice JJJ. You are cranking out some ripper images.

[gregbradley]

Hard to believe it was caught with a DSLR and in Aussie. Slight magenta on some of the stars - a bit of chromatic aberration perhaps?

Photoshop, Selective colour, magenta, will handle that.

Greg.