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Article #131

Re: nasa-celebrates-successful-mars-landing

#131
From: dp
Date: Tue, 07 Aug 2012 12:23
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On Aug 7, 5:11 am, Jon Kirwan <j...@infinitefactors.org> wrote:
> ...(Most of my work was in the
> visible, near UV, and near IR -- but for very different
> applications.) I still have some decent setups here and I've
> designed some devices that can be made for only a few
> dollars, and wavelength calibrated for $8 more, so that high
> school students could actually built their own real-world
> equipment that could genuinely "do science" and meet
> calibration standards. No intensity calibration, though,
> sadly. That costs money to do. (Unless you have a suggestion
> about how to do it on the cheap?)

Oh no, I could not possibly have a suggestion. My spectrometers
don't seem to have an overlapping wavelength range with yours,
mine are xray/gamma. I am practically clueless when it comes to
those in the UV and below range, mine generally count single
photons.
Efficiency calibration is costly on those for gamma, too,
though - the calibration source costs thousands. The rest, hm,
has become much less expensive since the release of the
netmca-3 (one can still spend tens of thousands on it but
does not have to any longer).
I would be curious what gamma spectrometry the thing is
carrying on board, too (if any, but likely so). Unlikely
HPGe, but then who knows, Mars is a cold place, they may
have figured some practical way to cool things down to
about liquid nitrogen.

Dimiter

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Dimiter Popoff               Transgalactic Instruments

http://www.tgi-sci.com
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From: dp <dp@tgi-sci.com>
Newsgroups: sci.electronics.design,aus.electronics,comp.arch.embedded
Subject: Re: nasa-celebrates-successful-mars-landing
Date: Tue, 7 Aug 2012 05:23:52 -0700 (PDT)
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