July 2020 Part 2 — This Month Through Your Adapted Lens

Started 2 months ago | Discussions thread
Travis Butler
Travis Butler Senior Member • Posts: 1,393
Re: Some Astro Success

Alan WF wrote:

Congratulations on getting the comet!

You say you didn't see much improvement with stacking, but how many images are you using?

Between 8 and 15. Unfortunately, the clouds were moving fast enough that I really couldn't get many more than that.

I couldn't find much on suggested settings - ISO range, exposure length, number of photos - in the time I had to research, beyond 'more photos are better!' Oh, and talking about star-tracking mounts if you're doing extended sequences. Do you have a recommended set of parameters?

Slightly out-of-focus stars often show colours better than in-focus stars. I've seen stacks of images going from in-focus to out-of-focus, without correction for sidereal motion, and each star forms a wedge. These show the colours of different brightness stars quite nicely. Perhaps something to try once you get better weather?

Definitely sounds interesting! I definitely need to get caught back up on sleep first, though.

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