EGAIN in fits header

phenrotay

I am using the ASCOM driver with MaxIm.

I notice that EGAIN in the fits header is set by the driver.

However the value is apparently based on 12 bits native.

As the driver software scales the data by a factor of 16 to map ADU from 12 bits to 16 bits, the EGAIN should be scaled accordingly by dividing the value by 16.

P. Henrotay

Support@ZWO

Hi Henrotay

That's a good question. We think egain base on 12bit is show the real satuation of e- and ADU, and match our graph in description.