Author Topic: Weird Artifact in OSC Sub.  (Read 104 times)

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Apophis

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Weird Artifact in OSC Sub.
« on: Aug 25, 2021, 21:40:48 »

2021-08-24_23-49-21_Bin1x1_150s__-20C_sh2-101_2021-08-24_23-49-21_QHY183MC__Mono_G16
Any ideas ?
Roger
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Carole

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Re: Weird Artifact in OSC Sub.
« Reply #1 on: Aug 25, 2021, 23:36:44 »
Needs zooming in to see it properly, very weird.

Carole

The Thing

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Re: Weird Artifact in OSC Sub.
« Reply #2 on: Aug 25, 2021, 23:39:24 »
Scope moved quickly at very end or beginning of exposure - its the stars trail. Other stars are too faint to produce a visible trail in the time.
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Mac

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Re: Weird Artifact in OSC Sub.
« Reply #3 on: Aug 26, 2021, 15:11:42 »
Yup ,just the scope slewing and the exposure started before the scope stopped, zoom in and look at all the bright stars, they all have a faint line in the same direction, as for the main cygnus one, that just someone / something kicking / knocking the scope. probably right at then end when the exposure was just about to finish.

Mac.
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Apophis

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Re: Weird Artifact in OSC Sub.
« Reply #4 on: Aug 26, 2021, 15:26:47 »
A. Nobody was out there as i image indoors.
B. why isnt the trail the same on each star and so long and convoluted on the one largest star.
c. possibly a gust of wind but why not in same direction.

Roger.
« Last Edit: Aug 26, 2021, 16:21:03 by Apophis »
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Mac

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Re: Weird Artifact in OSC Sub.
« Reply #5 on: Aug 26, 2021, 18:58:52 »
Was this a guided image? my guess is yes,
Was it cloudy? Could have lost the guide star
Did an aircraft fly past and the guiding latch on to it? (Had that before especially if using a separate larger field guide scope).
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Apophis

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Re: Weird Artifact in OSC Sub.
« Reply #6 on: Aug 26, 2021, 20:49:31 »
Guided yes.
No cloud. didnt lose guide star. Use multistar guiding in PHD2.
An aircraft surely flies in a straightline not twisting and turning as in the sub.
Roger
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