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How about an FT-IR microscope? Run the light source through a Nipkow
disc and hope to find a sensitive enough camera to detect the IR.

Phil

>>  I doubt that anyone has tried confocal imaging in the 3-5 and 8-12 micron
>>  range.  This is typically the range used for infrared heat calculation.  I
>>  understand that it would be possible, but that you would have to replace all
>>  of the optics of the microscope since glass does not transmit these long
>>  wavelengths well.  Also your image resolution would be severely diminished.
>>  However infrared microscopes have been made for looking at integrated
>>  circuits and their sources of heat.  As far as using these wavelengths for
>>  FRET or lifetime analysis has not be done.
>>
>
>I did not expect that any confocal systems would be adapted to mid and far IR.
>So I realize that it is a bit off-topic, for which I apologize.
>However, I have
>found that this group seems to carry a lot of wisdom in areas related to
>non-confocal microscopy and biological imaging in general, so I
>posted the inquiry.
>
>--aryeh
>--
>Aryeh Weiss
>School of Engineering
>Bar Ilan University
>Ramat Gan 52900 Israel
>
>Ph:  972-3-5317638
>FAX: 972-3-5340697

--
Philip Oshel
Supervisor, BBPIC microscopy facility
Department of Animal Sciences
University of Wisconsin
1675 Observatory Drive
Madison,  WI  53706 - 1284
voice: (608) 263-4162
fax: (608) 262-5157 (dept. fax)