Ken,
yes, this is it:
http://gemologyonline.com/Forum/phpB...hp?f=58&t=4027
http://www.worthpoint.com/worthopedi...n-spectroscope
http://www.dhub.org/object/371498,Professor
On the paper that came with it is seems that it was meant to be used for determining CO in blood (accessories that came with it suggests the kit was supposed to be used for analysis of liquid specimens) .
I tried to google a bit, what I 've got are mostly the articles describing various applications of this instrument (medical, gemology).
What I am interested in is its optical layout.
I am guessing, it uses Amici prism and on the the moving part there must be a mirror (to reverse the spectrum). But, how exactly the second spectrum is reversed? It must be more than just one mirror involved, because the spectrum is actually rotated, and the overlap between two images is controlled by the width of the spectrum band. The spectroscope part is not very big, measuring 170mm in length.
Last night I tried it on street lights, and the plan is to mount it on my MTO-1100A... but it would be nice to know more details of it's optical layout before mechanical details (adapters and so on) could be designed and made...
On the other thought, if this is a collectable of some sort (as suggested by some websites) the better approach would be to sell it to someone who values those historical things (the whole kit is in very good condition - some parts (like optical wedge, I assume it should've been be there) are missing - but my overall impression is it wasn't used much) and then spend the money for less valuable, but more appropriate for astro-work gadget? I hate the idea of destroying something that works - those mods are always risky to some degree.
Attached below is a spectrum from 20W white lamp (4100°K), on my workbench. Focus is obviously not good, and camera was moving as I was holding it in hand trying to keep it aligned with the eyepiece (exposure was automatic, couple of seconds)