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| 02:34 | Bertl_oO | off to bed now ... have a good one everyone!
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| 14:51 | vup | se6astian: nice
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| 14:51 | vup | whoops: MemoryError: Unable to allocate 63.2 GiB for an array with shape (1023, 3840, 2160) and data type float64
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| 14:58 | anuejn | :see_no_evil:
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| 14:59 | vup | the one numpy improvement I need is actually already implemented, but for some reason it stalled in 2019: https://github.com/numpy/numpy/pull/13263 :(
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| 15:04 | anuejn | sad :(
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| 16:20 | vup | well adhoc numba snippts will need to do the job for now
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| 16:32 | se6astian | oh no :P
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| 16:42 | vup | ok
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| 16:42 | vup | so this is a per pixel mean over the 1023 darkframes se6astian captured, with the mean on the red channel and the standard deviation on the blue channel: https://files.niemo.de/darkframe_pdfs/per_pixel_mean_std.png
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| 16:43 | vup | and this is that image with every two consecutive rows side by side: https://files.niemo.de/darkframe_pdfs/per_pixel_mean_std_wide.png
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| 16:44 | vup | (the colors are normalized such that the mean over the whole image minus 3 times the standard deviation is zero, and the mean plus thre times the standard deviation is one)
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| 16:45 | vup | also when looking at the column wise means again with the two rows side by side, it seems like the pattern i observed in steps of 32 columns is actually a pattern in steps of 128
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| 16:45 | vup | which would matchup exactly with the readout sequence
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| 16:45 | vup | https://files.niemo.de/darkframe_pdfs/column_wise_averages.png
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| 16:46 | se6astian | very interesting!
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| 16:46 | vup | Bertl_oO: ^
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| 16:55 | vup | also the fft of the residual column averages (substracting the per pixel mean from each darkframe, then averaging over the columns, then fft, then average over all darkframes) is pretty interesting: https://files.niemo.de/darkframe_pdfs/column_residual_noise_fft.pdf
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| 16:55 | vup | (again putting two consecutive rows side by side)
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| 16:57 | vup | compare this to the same, but doing rows instead of columns: https://files.niemo.de/darkframe_pdfs/row_residual_noise_fft.pdf
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| 17:01 | vup | se6astian: how hard would it be to capture a full width sequence ie 2048, again maybe a stack of 1024?
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| 17:01 | se6astian | not hard at all, just requires different configuration
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| 17:01 | vup | nice, I think that wolud be pretty interesting
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| 17:01 | vup | especially with enabled dark columns
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| 17:01 | se6astian | I am in linz currently though on mobile internet, but will do on Monday
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| 17:02 | vup | sure no hurry
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| 17:02 | se6astian | noted in calendar
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| 17:03 | vup | also from what I can tell, the new settings did not really make any difference in the column noise
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| 17:03 | vup | nice
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| 17:03 | se6astian | right
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| 18:41 | Bertl_oO | vup: yeah, I suspected that there is some read out effect ... glad that we could link this
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