BadPixelMap

@digitaliz-se Stefan, with this camera there is no need to go to -15°. The dark noise is so low that 0° or -5° is cold enough. Several users have indicated on the ZWO forum that cooling so deeply heats up the peltier cooling element so much that the glue of the sensor melts so be very careful there!

Having said that, yes room temperature if great. Bad pixel maps are temperature independent. Just make sure to not use those hot darks and bias for actual image processing and only for creating the bad pixel map. 

Thanks, then I'll use -10°C just to be safe. I can use that temperature the entire season then.

What am I going to do with the BPM if I am not going to use it when stacking?

Ahh you meant darks and bias from making the BPM when stacking my real images? Nah, Im gonna use the -10°C bias and darks 🙂

/stefan

I do BPM for each set of darks: so for each master dark I have its own BPM matching exactly the entire set of darks from which it has been created...

@ippiu That is not needed a BPM is never hurting the data, so what you want is a BPM made of a very noisy dark. Like one made with no cooling and a long exposure. You can then use that for all data.

But I think that too noisy BPM can affect my data and correct them too much.

Indeed, if I load exactly a BPM with the same settings as darks and lights, maybe the correction and calibration of all my lights occur really in an accurate way...

Am I wrong? Am I misunderstanding anything? 

Partly yes, a BPM will not overcorrect your data, this is the strength of it. You can use a BPM, created from a noisy dark, for your sensor for a long time. And for all data.