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I think this may be the winning suggestion! Especially since I don't have
to paint the resisiters black, and they do get warm. And the supply room
is full of them! The FLIR cam is here already and is so cool that I
really want to use it.
thanks everybody!
Sue Ann
> ISEN-ASTC-L is a service of the Association of Science-Technology Centers
> Incorporated, a worldwide network of science museums and related
> institutions.
> *****************************************************************************
>
> You could save even more money and just use a cheap web camera, ( or
> cheap video camera) as these ARE sensitive to near IR from cheap LED's.
>
> your other option if your have the thermal IR camera (FLIR) on hand
> already would be to get a few small 1 or 6 watt ceramic resisters and
> hook them up to a small dc power supply.. these are designed to get hot,
> stay hot, and are dirt cheap.
>
>
> hope this helps
>
> Stuart Kohlhagen
> Manager Research and Development
> Questacon
>
>
> -----Original Message-----
> From: Informal Science Education Network
> [mailto:[log in to unmask]] On Behalf Of Sue Ann Heatherly
> Sent: Friday, 15 October 2010 7:35 AM
> To: [log in to unmask]
> Subject: hidden IR sources for a FLIR camera
>
> ISEN-ASTC-L is a service of the Association of Science-Technology
> Centers Incorporated, a worldwide network of science museums and related
> institutions.
> ************************************************************************
> *****
>
> Hi All,
>
>
> I'm working on a low cost "exhibit" (too strong a word) made of vinyl
> posters that show images of astronomical objects. I want to hide small
> point sources of IR behind the posters so that people could detect them
> with an IR camera.
> (I work at a radio astronomy observatory -- we're trying to draw some
> analogies to radio astronomy)
>
> Have played with christmas lights (painted black), and they work but I'm
> afraid of the heat. Would they damage the vinyl over an 8 hour day?
>
> IR LEDs operate at near IR wavelengths and I doubt they'll show up.
> These FLIR thermacams work in the mid IR range.
>
> Any ideas?
>
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For information about the Association of Science-Technology Centers and the Informal Science Education Network please visit www.astc.org.
Check out the latest case studies and reviews on ExhibitFiles at www.exhibitfiles.org.
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