Using the figures and specifications Fred and Eric have used here seem to suggest that using a OSC camera for RGB or NB imaging should incur a huge time penalty imaging in light poluted areas or dark sites but in practice this doesn't seem to be the case. In fact the opposite seems to be the case. An image taken with a OSC camera seems to be able to produce very similar results at about 1/3 of the total exposure time of the mono. The only explanation seems to be the incredible interpolation algorithm used to calculate the different colours into the different pixels. On a scientific note the OSC cannot compete but for general pretty picture imaging they seem to cut the mustard pretty well.
I agree the spec sheet for the two sensors do indicate the figures you mention but in reality something happens to render this difference a non event or at least reduce it to very acceptable levels.
Clear as mud Fred
