franco Any idea how to enable the high res mode for the colour camera?
No idea if you actually could in ASIAIR (seeing that this thread is under ASIAIR), if that is your question. I do know that you cannot do it in ASICAP with a non-pro ASI294MC. I haven't tried it with the driver in INDIGO -- I suspect you that could.
Take a look at the ZWO document that I linked to -- there is no advantage in color anyway for a normal user, since the traditional deBayer filter for the Red component, for example, will still have the original lower cutoff frequency. (On macOS, for example, deBayering uses a Lanczos filter, and the Lanczos filter for the "Unlocked Bin1 mode" will still need to have the same resolution in microns.)
Each Red superpixel is still as large as the original binned red pixel, and the separation between the red superpixels has the same spatial resolution (in microns) as the orginal separation. That will determine the result resolution.
The only thing I can think of to pull better resolution from the "Unlocked Bin1 Mode" for color is to use a Drizzle algorithm when performing deBayering. (Check Wikipedia on "Drizzle" if you are not familiar with the technique that was originally created for the Hubble space telescope.) But it also involves lots more subframes to recover the underlying resolution.
But remember, even if you write a program to deBayer the weird configuration yourself, you still don't get something for nothing. Huge loss of well depth, and thus dynamic range. I won't try to use for anything but solar system work, and even there only if the Airy disk of your optics is smaller than the orginal pixel size (i.e., very undersampled originally). You might be able to find a use for it; I can't.
If you need higher resolution, just buy a mono camera and slap a color filter in front of it. You automatically get 2x resolution improvement for Red and Blue, and 1.4x resolution improvement for green. And with the "Unlocked Bin1 Mode," yet another factor of 2 in resolution.
Chen
