ASI 1600 Pro Pattern Noise

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ASI 1600 Pro Pattern Noise

Postby rwstanley » Wed Dec 20, 2017 9:44 pm

I received a 1600 MM c Pro and am having a problem with some kind of fixed pattern noise. I dither my subs and I have not been able to solve the problem with any form of calibration. I have switched power supplies and filters and that has not solved the problem. I went back into my folders and found a master bias from before this problem occurred and it is relatively smooth and flat. My current master bias shows strong vertical dark lines. I am attaching jpgs of the old and new bias frames and a sample image all standard stretched in Pixinsight. I can provide the fits files if needed. Please help.

Thanks,
Ron
Attachments
Master_Bias  Old 1_2328x1760_Bin2x2_Temp-20C_ExpTime0ms.jpg
Old Master Bias from previous 1600 camera
Master_Bias  New 1_2328x1760_Bin2x2_Temp-20C_ExpTime0ms.jpg
New Master Bias from current 1600 Pro
Group2-L.jpg
Image showing noise
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Re: ASI 1600 Pro Pattern Noise

Postby GeneralT001 » Tue Dec 26, 2017 8:18 pm

This is interesting. I've been having a similar problem with my Pro as well. I was thinking it was frost but now you have me wondering. I haven't taken a bias frame shot yet, but will now that I see this.

Here is what my last image looks like:

Frost.JPG
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Re: ASI 1600 Pro Pattern Noise

Postby Misho89 » Wed Dec 27, 2017 10:22 am

Same here with 1600mm pro, the green channel is the worst, blue also not the best, red is not so bad.
Looks like the pro ver. have some problem.
Attachments
27.12.2017 г.png
RGB.png
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Re: ASI 1600 Pro Pattern Noise

Postby Astrobug » Wed Dec 27, 2017 8:33 pm

Misho89 wrote:Same here with 1600mm pro, the green channel is the worst, blue also not the best, red is not so bad.
Looks like the pro ver. have some problem.


How many subs did you make for each channel?
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Re: ASI 1600 Pro Pattern Noise

Postby GeneralT001 » Thu Dec 28, 2017 12:44 am

Misho89 wrote:Same here with 1600mm pro, the green channel is the worst, blue also not the best, red is not so bad.
Looks like the pro ver. have some problem.


The relections around the brighter stars look like issues that have been reported by those who muse ZWO filters - are you using ZWO filters?
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Re: ASI 1600 Pro Pattern Noise

Postby Misho89 » Thu Dec 28, 2017 6:01 am

https://www.cloudynights.com/topic/6017 ... 600mm-pro/
The reflection are bad but i worry more about pattern noise.
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Re: ASI 1600 Pro Pattern Noise

Postby Sam » Thu Dec 28, 2017 9:16 am

hello guys
please contact us through email if you suspect this is camera's problem
we can help to do one remote check and provide RMA
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Re: ASI 1600 Pro Pattern Noise

Postby GeneralT001 » Tue Jan 02, 2018 7:07 am

So I tried another set of subs tonight at -30C. I just registered them and integrated them (no calibration) and the pattern looks exactly the same. So I'm thinking this is not frost/dew. Any ideas?
Attachments
frost3.JPG
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Re: ASI 1600 Pro Pattern Noise

Postby sprinklestudios » Thu Jan 04, 2018 2:53 pm

I am seeing the same pattern on my ASI1600MM Pro. Has anyone figured out what the issue is on this? Is it software or a hardware issue?
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Re: ASI 1600 Pro Pattern Noise

Postby Sam » Fri Jan 05, 2018 2:15 am

sprinklestudios wrote:I am seeing the same pattern on my ASI1600MM Pro. Has anyone figured out what the issue is on this? Is it software or a hardware issue?


we suspect this is a hardware issue, please contact us through email and we will provide RMA
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