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Old 12-10-2020, 03:00 PM
jahnpahwa (JP)
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Corona Australis

RGB filters on, I'm determined to get better at it.
Feels like this is a bit of a tough one to process. Cluster, bright nebulosity, dark nebulosity, dust and a really nice spectrum of star colours.

First effort is 10 x 120s each RGB, unity gain on zwo 1600mmpro, -15c. Took lum and ha, have it up my sleeve for future processing fun.
I'd be keen to try masking areas here and bumping nebulosity, and doing something ti distinguish background vs dust, though there is just heaps of it here. Here is a slightly wider version on astrobin, which shows a pretty nasty gradient on the left https://www.astrobin.com/full/91444c/0/

anyone interested in reading about what is on show here could check this thread out https://www.iceinspace.com.au/forum/...rona+australis
.... and it will also show much nicer detail

Any feedback would be great!
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Last edited by jahnpahwa; 12-10-2020 at 04:05 PM.
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  #2  
Old 12-10-2020, 08:58 PM
Craig_
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I'm not familar with this target but I think it turned out well. Some nice colour in the stars here
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Old 13-10-2020, 07:24 AM
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PKay (Peter)
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Starting to shape up JP!

Nice part of the sky.

Good effort.
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Old 13-10-2020, 08:36 AM
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multiweb (Marc)
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Nice field.
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Old 13-10-2020, 01:16 PM
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rustigsmed (Russell)
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very nice jp - i would be collecting more in the Luminance channel. you'll find that the RGB data in an LRGB doesn't actually have to be as good, the Luminance is where it is at. Not really worth getting Ha as it is a reflection nebula rather than emission (although there is one small section of Ha but i would probably spend the time on L capture).

but it is looking really nice, the dark dust will pop out with more data.

cheers

russ
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Old 13-10-2020, 01:31 PM
jahnpahwa (JP)
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Quote:
Originally Posted by rustigsmed View Post
very nice jp - i would be collecting more in the Luminance channel. you'll find that the RGB data in an LRGB doesn't actually have to be as good, the Luminance is where it is at. Not really worth getting Ha as it is a reflection nebula rather than emission (although there is one small section of Ha but i would probably spend the time on L capture).

but it is looking really nice, the dark dust will pop out with more data.

cheers

russ
Thanks heaps Russ, Marc, PK and Craig.

For luminance, would it be a common tactic to pull down the length of sub vs the RGB subs? I have the same duration subs and they seem pretty unusable because theyre so bright, the stars in particular are bloated badly.

That first effort of an hour is currently being supplemented by another 3.5 hours from last night, so hopefully I can do something with it to bring out some more detail.

Cheers!
JP
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Old 13-10-2020, 02:51 PM
jahnpahwa (JP)
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Here is an update, now with 80-90 mins per channel. I think the dust has come up a bit. I'm wary of slaughtering the cluster while bringing the brightness

astrobin https://www.astrobin.com/full/91444c/B/
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Old 13-10-2020, 08:56 PM
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Sunfish (Ray)
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A lot going on there. Iron filings and sparklers . Looks great.
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Old 13-10-2020, 10:11 PM
jahnpahwa (JP)
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thanks Ray! Yeah, plenty to like in that field for sure.
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