Re: [APML] Dynamic Range of CCD

[Chuck Vaughn <aa6g@aa6g.org>]

Dave,

> On the upper end, negative film turns black and the CCD's well fills up.
> These are roughly equivalent effects.  The ST-10E has a well depth of 77,000
> electons.  I take, as the dynamic range of the CCD, the ratio of the well
> depth to the minimum detectable signal, i.e., 77,000/33 = 2300.  This is about
> 11 stops.  In practice, one should stay about a 1/2 stop away from the full
> well capacity to prevent blooming, so it's fair to say that CCD's have at
> least 10.5 stops of usable dynamic range in the short exposure limit.

How did you calculate this?

It looks like you took LOG(2300)/3dB per f stop which = 11.21.

Correct or not?

Chuck <aa6g@aa6g.org>


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