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Old 19-06-2019, 12:15 PM
gb44 (Glenn)
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M 20; + fleet of UFOs

From last night with the moon close by this one is all wrong!

This is 5x5min Canon 50d mod with 12inMeadeACF.
Custom white balance that I use in daytime - without the IDAS P2 light pollution filter.

Result is a predominantly green hue with doughnuts that calibration failed to remove.

How wrong is that!

GlennB

pps 22Jun2019 shot added - with custom WB including the IDAS LPS p2 filter and 15x5min subs. I still see one big ufo which I wouldnt expect to see with calibration, unless I bungled something..? I did use 6 sec sky flats which I havent done before.
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Click for full-size image (M 20 b.jpg)
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Click for full-size image (M 20 8x5min 50d 12in 22Jun2019 sm.jpg)
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Last edited by gb44; 24-06-2019 at 05:16 PM. Reason: add pic and update ufos
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Old 19-06-2019, 12:39 PM
RyanJones
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What an interesting colour Glenn. Reminds me of the colours in a copper flame. There’s an interesting spot in the lower center of the Nebula that almost looks like a moon crater.
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Old 19-06-2019, 01:40 PM
gb44 (Glenn)
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Yes, it came out green instead of the red nebulosity all over! So much for custom white balance. Maybe I need a new CWB with the filter included... easy enough to do.

That mark is one of several. Its gotta be dust... I haven't had a subject where the flats haven't removed the dust doughnuts so it was a new one for me. Maybe the moonlight angle of attack being different from that of the lightbox caused that...some sort of interference pattern.

Always something new!

GlennB
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Old 19-06-2019, 06:49 PM
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JimsShed (Jim)
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they look like flying saucers from a 60's sci fi
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Old 20-06-2019, 12:38 PM
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sil (Steve)
Not even a speck of dust

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droplets , can only think of monty python "your majesty is like a stream of bats p^&* when all around is dark"
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Old 24-06-2019, 05:18 PM
gb44 (Glenn)
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I just added (into the original post) an update to the ufo situation...

GlennB
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