Quote:
Originally Posted by rogerco
Beginners question -
Why take multiple sub frames, why not just take one and duplicate it and then stack the copies ?
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Hi rogerco,
This doesn't work as the noise produced by the camera sensor is random and shows up at different places/intensities on each image.
By stacking individual shots you smooth out that noise over the background of the image and boost the signal (stars and other stuff!)
Hope I've explained it well enough - it's just the law!!!!
Cheers
Doug
