[alistairsam]

Hi,

I'm new to LRGB imaging and wanted to know how you calculate exposure lengths for each of the channels.

I do know binning RGB 2x2 is fairly common and the exposure would be 1/4th of L as 4 pixels are used instead of 1, but is there variation between R,G,B depending on the object?

I had a read of excalibrator and how it uses measurements from known databases. but is this for the final processing part?
any good sources / guides on the basics?

Thanks
Alistair