Quote:
Originally Posted by Shiraz
If it is this easy to decrease the effective seeing from 2.6 to 2.1 arcseconds, why haven't I been doing it??
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One issue with short subs is the read noise for each sub you download to your PC depending on your camera. The process that empties the CCD buffer, the quality of the USB cables, how fast your PC/notebook CPU is, time lag, background processes, write speed of your HD, quality of the capture software and drivers, etc... So in the end it's always a compromise.
Another thing to consider is that for very faint extended object with a low surface brightness unless you have a perfectly collimated light bucket you'll be stuck with fewer long subs rather than many short ones.