In article <871pgo$rkr$1 at agate.berkeley.edu>, Louis Hom
<lhom at OCF.Berkeley.EDU> writes
>In article <YJ04HtAaFGl4EACS at genesys.demon.co.uk>,
>Dr. Duncan Clark <Duncan at genesys.demon.co.uk> wrote:
>>>>2. Cheap ccd camera and lens (~ UKP400) outputted to monitor and
>>digital printer (this is much more sensitive than option (1) but also
>>way behind option (3).
>> Do you have an idea of the sensitivity for this group of
>cameras? The reason I ask is that I've seen a lot of very inexpensive
>(about US$50) but very sensitive (0.1 lux) black and white ccd cameras
>(about 500x500 pixels, so not great resolution either) in some electronics
I'm not sure offhand what the sensitivity of the camera we are using is,
a Watec Model A39,244 from Edmund Scientific, Barrington NJ. The camera,
lens and printer is as per Biotechniques, vol 14, no. 6 pp 902-904. The
professional monitor we use cost me UKP10 at a ham radio show. We can
also capture the output onto computer via an appropriate capture card
although I must admit ours is ancient and will not allow integration
etc. which I think would substantially increase sensitivity.
However you want as many pixels as possible. 500x500 will not really be
enough. Aim for 800x600.
The problem with being on the cutting edge is that you occasionally get
sliced from time to time....