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Stripes on image


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Alex,

Looks like Newton Rings....

These are caused by interference between the CCD chip and the coverplate. The narrowband Ha wavelength makes them more obvious.

Usual answer is to slightly tilt the camera. I use a ZWO T2 tilter with my ASI 174.

 

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On 11/03/2019 at 23:10, Merlin66 said:

Alex,

Looks like Newton Rings....

These are caused by interference between the CCD chip and the coverplate. The narrowband Ha wavelength makes them more obvious.

Usual answer is to slightly tilt the camera. I use a ZWO T2 tilter with my ASI 174.

 

I have exactly the same problem with my Neximage5 in my modded PST.
It's like watching a 405 line B&W CRT screen from my childhood [in the last century.] :blush:
I keep expecting Andy Pandy to appear. Or, far more likely, the BBC test card.  :icon_clown:

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