Posted by
David Baddeley on
URL: http://confocal-microscopy-list.275.s1.nabble.com/Cooling-time-for-CCD-cameras-tp7554139p7554146.html
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Most modern cameras reach their temperature setpoint within about 5 mins (some are considerably faster). You can generally read the temperature out through software, and don't need to rely on measuring the noise. If you do measure noise, keep in mind that the baseline also tends to change with temperature.
Cheers,
David
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On Sun, May 13, 2012 9:28 AM NZST G. Esteban Fernandez wrote:
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>Hi all,
>
>1) I'm curious how much time, roughly, it takes for a Peltier-cooled
>CCD camera to reach the lowest temperature. Are we talking a few
>minutes or closer to an hour or more? I have several brands of cooled
>CCDs of different vintages and I'm just looking for a "rule of thumb",
>if possible.
>
>2) I do plan to test my cameras myself: I was thinking of imaging a
>timelapse of a dim & stable specimen (requiring something like 30-60
>sec. exposure) after turning cooling on to see at what time noise
>reaches a minimum. Any suggestions for other ways to test this are
>welcome.
>
>Thanks,
>Esteban