Quote:
Originally Posted by Lumen Miner
If I was to take say 100 20 second shots, would I therefore need to take 100 20 second dark frames to be successful?
|
I think there is not much benefit in taking that many shots.. from my experience, 10-20 is more than enough to (almost) remove the sensor noise. Especially if you are close to the city. The same number of darks should be adequate.
The real improvement (in terms of the number of objects recorded) will be imaging from the dark site and with longer exposures (and this will depend on the tracking performance of your mount).
EDIT:
Keep in mind that the shutter has a finite life time, ~30-50.000 shots.. Mine went faulty after 3500 only and that set me back by $250 (normally this is $500, I was lucky because people from Canon service were very kind to me !!)
EDIT2:
I am using Digital Photo Professional for curves and background light pollution removal (this came with my Canon) and it is more than adequate.