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Shlomi Vaknin
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- Shlomi Vaknin
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Yes, they only addressed that part. I responded with another email detailing exactly what you said, that I cannot calibrate these out properly, but I doubt they will have a different answer for me.. Will give it a try, as well as adding CC to my wo…
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Finally got an answer from ZWO, they say this is within normal range.. Hi Shlomi,Sorry for the delay.Our tech analyzed this, you mean that when the camera with a long exposure time, the value of hot pixels has a fluctuation, right?The hot pixels are…
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Yes, I assumed a normal "sqrt(mean)" to be an acceptable noise level, which should be ~142(16bit) for the hot pixel, and ~37(16bit) on a standard pixel, surely not ~4000 and ~240 respectively.. In any case, I sent an email to zwo with all these deta…
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I took a closer look at the data, this time using python and google sheets. I ran the following code to closely examine the dark stack: from astropy.io import fitsimport glob for dark in glob.glob('E:/Astrophotography/ASI1600/2021-11-24 - New Darks…
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I see.. Absolutely no rotation or any camera movement between the lights, flats and even darks, all were taken in one go without a meridian flip (I started imaging when the object was already in the west), and I checked the FITS headers, all gain, o…
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Thanks for answering so quickly! I didn't mean that I have a problem with dark spots, I don't, I was just inspired by that episode to examine my own calibrated frames, so thanks for that! I also should have mentioned that I took all shots yesterday,…