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**General / Averaging integration doesn't...uh, average**

« **on:**2018 December 02 02:27:55 »

Take 4 dark frames.

12 bit mean values as follows;

51.47

51.47

51.47

51.46

Average them and you get 51.4675, right?

But, if you take those frames and integrate them using averaging, no noise evaluation, no weighting and no pixel rejection, you get;

Average 51.4682 (and Median gives you 51.4353).

Which is 0.007 higher than a straight up mathematical averaging.

I wonder what's going on?

Is the 'statistics' proccess limited in it's reporting, or is something funky happening during integration?

Anyone know?

Cheers

Markus

12 bit mean values as follows;

51.47

51.47

51.47

51.46

Average them and you get 51.4675, right?

But, if you take those frames and integrate them using averaging, no noise evaluation, no weighting and no pixel rejection, you get;

Average 51.4682 (and Median gives you 51.4353).

Which is 0.007 higher than a straight up mathematical averaging.

I wonder what's going on?

Is the 'statistics' proccess limited in it's reporting, or is something funky happening during integration?

Anyone know?

Cheers

Markus