Quote:
Originally Posted by strongmanmike
...under what conditions and with what sort of equipment is doing a single 30min sub a significantly better option than doing 6 X 5min subs?
 |
A good example would be a narrowband sub with a sensor like the KAF-16803. The signal (including sky glow) will be relatively small and in a 5 minute sub the read noise from the camera will swamp the shot noise from the target (and you'll incur that read noise 6 times.) A 30 minute sub will have much better SNR than a stack of 6 x 5 mins.