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Originally Posted by Rocket Boy
Nice image Tony,
I'm wondering if you did a few shorter exposures with 1600 ISO and stack them in too, would that help?
Also do you recommend the use of UHC-S Filter in most imaging situations with the DSLR for astro?
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Thanks Andrew.
Using shorter exposures can have its advantages. In my experience, guiding errors are reduced and so is the general star size, making for "crisper" images. The down side is that you need many more of them to make a good image and you also have to sacrifice some "depth".
I don't have a lot of experience with the UHC-S filter, but so far it seems to work well on emmision nebula and not so well on refelection nebula. I haven't tried it on a galaxy yet, but I am interested to find out.
Thanks again