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walking noise ?  

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(@lvigano)
White Dwarf Customer
Joined: 3 years ago
Posts: 17
April 8, 2021 11:45  

ciao,

some strange artefacts in the final integrated image:

m108 St

in the light is barely notable ... but not sure it's walking noise ...

L 0035 M108 2021 04 07 23 51 28 ISO800 60s 16C St
nBG L 0035 M108 2021 04 07 23 51 28 ISO800 60s 16C St

Canon 60D (modded), 60sec light @800iso

Best,

L.


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(@wvreeven)
Galaxy Admin
Joined: 3 years ago
Posts: 905
April 8, 2021 12:13  

@lvigano There are a lot of dark spots in your image that are caused by dust in the optical train. It looks like you are not using flats. And if you do, the flats are not correcting for the dust.


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(@lvigano)
White Dwarf Customer
Joined: 3 years ago
Posts: 17
April 8, 2021 14:47  

@wvreeven yep I think so ... I totally agree with you 🙂 No flat because it was just a quick test to check if it has sense or not to take a picture of M108 with a 420mm.

As soon as I can I'll redo the test with flat!

Thanks,

L.


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(@vincent-mod)
Universe Admin
Joined: 4 years ago
Posts: 3550
April 9, 2021 12:05  

If you can dither, also do that as that will eliminate potential walking noise as well.


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