Af m27

jjjnettie (Jeanette) · #1 23-08-2012, 09:08 AM

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 (Andrew) · #2 23-08-2012, 09:20 AM

Quote:

Originally Posted by jjjnettie

I wonder how much more there would be if I'd upped the ISO to 800??

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.

Larryp (Laurie) · #3 23-08-2012, 09:59 AM

Lovely image!

jjjnettie (Jeanette) · #4 23-08-2012, 10:57 AM

Quote:

Originally Posted by 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.

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 · #5 23-08-2012, 04:24 PM

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 (Jeanette) · #6 23-08-2012, 06:54 PM

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

stanlite (Grady) · #7 23-08-2012, 08:33 PM

looks loverly JJ

bokglob (Darrell) · #8 24-08-2012, 06:37 PM

Hi Jeanette, just noticed this one, This is awsome! colour and inner detail are really really good

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

peter_4059 (Peter) · #9 27-08-2012, 05:53 PM

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

gregbradley · #10 27-08-2012, 06:11 PM

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.