Quote:
Originally Posted by skwinty
Hi All
If you dont have the expensive and quality mount with guiding then track and stack. The photons dont care if they are collected in one exposure or one thousand exposures. The stamina of the observer will determine the length of the total exposure.
Steve
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The photons don't care, but the camera does. You get read-out noise for every sub, so with 1000 tracked and stacked you get about 32 [sqrt(1000)] times as much read-out noise as with a single exposure. Also, if the initial exposure is too short to trigger a signal in the camera, then adding a thousand zeros still gives you zero.
Geoff