Hello,
M13 globular cluster with ASI224MC, gain 250 / 600, 254mm Newton F/4.7.
A bright sky with an estimated zenithal visual magnitude of 3.5 - 4... and a very short night. Not worth the sensor!
I'm not used at all with colour balance.
Sensor temp was 20.1°C (uncooled).
Auto dark subtraction and SER recording.
Nicolas.
