Do you debayer Darks, Flats and Bias Frames?

[pgottstein]

Just learning. I know I am suppose to Debayer Lights from my OSC camera. But What about Darks, Flats and Bias frames?

Thanks

Peetyg

[pfile]

hi - you should apply the darks, flats and bias frames in undebayered format to the undebayered lights. after calibration you debayer the calibrated lights, then register them.

so unless you are analyzing your flats/darks/bias frames there's no need to debayer them.

rob

[pgottstein]

rob still a little confused. If I use Batch Preprocessing script. I have a One shot Color camera.  Should I check CFA box so I can debayer the lights at the same time. I thought that was the whole idea of Batch Prerocessing.

Thanks


Peety

[pfile]

the idea of BPP is to handle the drudgery of matching your darks with your lights, and for mono cameras, matching all your flats with your lights... as well as automatically building the calibration master frames from the calibration subs. also BPP does the alignment step as well, and performs a "trial" integration of the aligned, calibrated lights.

yes you should always use the CFA check box if you are using an OSC or DSLR. this is because the alignment step performed by BPP needs to be performed on debayered images if the input images were from OSC or DSLR.

for a mono camera you would leave CFA unchecked. CFA means "color filter array" - the bayer matrix.

rob

[Warhen]

And just to add to Rob's reply Peety, the script won't debayer the calibration frames, just the lights- exactly what you want done. :>)