QHY268C Binning

[cairomike]

Hi Robin

SharpCap V4 32bit and 64bit
There appears to be a bug in binning with the QHY268C camera, images captured in RAW8 or RAW16 at all except 1x1 binninig are monchrome. Images captured in RGB24 at 1x1 and 2x2 are in colour, but 3x3 and 4x4 don't work.

In SharpCap V3 32bit it is the same except that only 2x2 binning is available, but it only captures monochrome images.

Regards
Mike Cuffe

[admin]

Hi Mike,

this is just the way binning works on QHY cameras (in spite of being a bit unintuitive). On some other brands, you keep colour in binning modes, since the binning chooses 4 (or more) nearby pixels of the same colour filter to add together. On QHY the binning routing chooses 4 adjacent pixels and therefore throws away the colour signal.

Fairly recently, QHY introduced a colour binning option, but that only works (as you have found) in RGB mode.

Fortunately, the effects of binning on CMOS cameras are much less significant than on CCD cameras, so there is no great loss in capturing at full resolution and then reducing the image size after processing (at least in terms of final image noise, etc - obviously you have to store, transfer and process more data).

cheers,

Robin

[cairomike]

Hi Robin

Okay understood, many thanks for the explanation.

Have a good Christmas.

Mike