Quote:
|
Originally Posted by rogerg
Paul,
That's quite a nice image of the 2070. Your image has different colours to what I have seen in the past, most being very red/pink vs your very blue wihch is interesting. I expect simply because of processing and the particular DSLR/telescope combination?
I really like the softness of the colours - not over processed and not too "contrasty".
It's interesting you use ISO 200 for it on the DSLR - as I am soon to be an owner of a 350D can you tell me - with a DSLR is there a difference in image quality between 1600 ASA and 200 ASA? Does the 200ASA speed produce a smoother (less noise) image?
Roger.
|
Hi Roger,
gee I forgot to mention that I used a mask technique with this image so that the core of the nebula was not over exposed.
Yes that's right, the ISO200 produces a smoother and less noisy image, but of course at a reduced sensitivity.
With my 12-inch equatorial telescope I can afford lower sensitity in return for smoother images.
For matter of interest the image isn't dark subtracted either! but yes I did use the freeware version of Noiseware on the image to reduce noise. I process all my images with Photoshop = manual stacking/averaging/image alignment/etc).
Paul