Quote:
Originally Posted by Itchy
Hi Andrew,
Appying flats is not a technique for noise reduction. What they do is even out the illumination of the field. You will notice that your first image is darker around the edges than the second one. What this allows you to do is stretch the image more without stretching the noise too much. Try stretching your second image a little more.
I agree with you about Neatimage. This type of noise reduction doesn't work that well on wide field shots because the software can't tell the differece between the noise and the stars and so will blur them.
Cheers
|
Cheers Tony,
I should have explained myself better, I can see how it's come across the wrong way. I wasn't implying that I substituted one for the other just that I didn't use NEAT image for noise reduction at all, I just used the flats for an "even background".
Thanks for clearing that up my apologies if it caused any confusion.
It's the first time I've used flats on any of my images (thanks to Tony's advice) and I was just so happy with the result.
The next step for me is to use dark frames too and see how they compare against In-Camera Noise Reduction.
Thanks again.
PS I'll try and stretch the second image and see what I get.
EDIT: Ok I've done a stretch on the 2nd image and this is what I've got.
What do you think?