Quote:
Originally Posted by Atmos
Using the graph that Shiraz posted.
http://www.iceinspace.com.au/forum/s...&postcount=157
It should still take about 6 minutes to become read noise limited, even at ~1.6e-. I based the calculations off of my previous setup was at F/5.7 and a KAF-8300 with a read noise of 8.5e-. It needed 90-120 minutes to reach that point! |
this is one of the two areas of great interest with this camera - if you accept that most NB imagers under reasonable sky will not be sky-limited, the one with lowest read noise will have the deepest images (dark noise and QE being equal)
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edit: and the other area of interest is the ability to use short subs with broadband and still get comparable SNR results to those from conventional cameras with long subs (sky noise and dark current will still dominate, so there are no SNR advantages, but there are possibly major ancillary advantages from short subs)