Quote:
Originally Posted by peter_4059
That's what I suspected. I guess the trade off then is in image processing time?
Is it possible to get the same depth in an image with many short exposures vs fewer longer ones?
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1) processing time - depends on the capabilities of your computer. Registration and Integration is multithreaded in PixInsight now, so a modest quad core and a solid state drive works wonders
2) depth - so long as your images are sky limited, stacking many short images should still amount to a similar numerical result. If a photon arrives from a faint part of an object every 10 minutes and you take 10 minute subs, over the course of an hour you collect 6 photons. With 1 minute subs you still collect 6 photons in the same time...