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read noise adds in quadrature, so 2x2 binning in software only results in 2x the read noise, not 4x. In addition, the 8300 produces significantly more read noise in hardware binning mode than in 1x1 mode so there is actually not a lot of read noise advantage from on-chip binning.
However, if you take 1x1 subs that are long enough that the read noise is insignificant cf the shot noise, read noise is not an issue at all with software binning and there really is is no advantage to on-chip binning, only disadvantages.
Last edited by Shiraz; 10-07-2014 at 11:30 PM.
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