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Originally Posted by h0ughy
Would 100 1 minute shots work, for those who cant get polar alignment spot on for a 10 minute shot?  |
Interesting question Houghy.
Paul is correct in that longer shots do result in improved signal to noise ratio. However, stacking 100 shots would improve the signal to noise ratio by a factor of 10 (square root of the number of shots). Stacking 10 shots only improves the S/N ratio by 3.16. Of course, the S/N ratio is much better to start with. There is some loss using the many shots idea though. Other calculations and my own experience suggests the 100 x 1min shots would be the equivalent of about 70-80 min of longer exposures.
Cheers