Does anyone else with a recent ASI2600 MC camera see pronounced colour-banding on (stretched) dark and bias frames? I'm assuming that the actual effect is small (since it is only visible on the stretched file) - and thus not of concern - but it is curious that my much older 2600MC shows none of these colour gradations - see comparison below (older model on the left, new one on the right, both are Master darks at -10 temp and gain 100).
