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ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

Swaro 12x50 v Leica Noc 10x42 - Leica Brighter during the day? (1 Viewer)

Chuck,

It's over 25 years since I was last involved in buying a decent spectrometer. Back then, the kind of components and lab set-up required to produce top quality transmission scans would have cost tens of thousands of dollars. There are a lot more far Eastern manufacturers in the market these days, so you could probably do a pretty decent job for a lot less, but on my pension, not something I could contemplate. :-C

While not at all suitable for a binocular scan, it seems reasonably straight forward to build a very basic spectrometer with a simple grating and CCD or CMOS array. I toyed with the idea of having a go, mostly to satisfy my own curiosity about ambient light shifts. Fortunately, the following Nature paper from 2016 did a much better job than I could possibly hope to. It shows very clearly why the full spectrum is required.
https://www.nature.com/articles/srep26756#Fig1

David
 
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