I read the tutorial on how to use synthetic bias as carefully as I could. I took a series of very short exposures and converted those to a sequence and ran the command to spit out the stats. When I paste the results into a spreadsheet this is what I see:
The last two columns I added to record the offset of each shot and then, since the spreadsheet showed me FP values the very last column is the median times 65535 – this set of values looks like nonsense in context.
My question though is this: the median numbers are almost exactly the same as the bias values that I set for each shot (using native camera control driver values through NINA to capture). Is it really plausible that what I should use is offset of “=$offset”??
I’m a bit confused by the last bullet paragraph in the tutorial about determining offset for imaging cameras right before the DSLR section. That seems to imply that you just have to know what the multiplier number is for a 16-bit camera. I have an OGMA AP26CC that I’m working with that has the same sensor as the camera mentioned in that paragraph (ZWO 2600MC, which I think also has the Sony IMX571). Does that mean I should actually use offset of “=10*$offset”??
Thanks for any advice!