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Main Topics Tools
Subtopics Tools Miniature DOAS |
(mini-DOAS) One of the most recent endeavors
within the Volcanic Clouds group here at MTU is the development of our own
mini-DOAS system, based on work done by scientists at Montserrat Volcano
Observatory (MVO), Cambridge University and ??. This piece of equipment is fast becoming an
important addition to volcano monitoring tools at many observatories
world-wide. With intentions of
improving upon the original COSPEC design, this equipment is currently being
used to monitor volcanic SO2. Equipment Details The essential component of
the mini-DOAS system is the spectrometer, a USB2000 Plug-and-Play
Spectrometer from Ocean Optics,
Inc. It accepts light energy
transmitted through a single-strand optical fiber and disperses it via a
fixed grating (special-ordered at a range of 200-850 nm) across the linear
CCD array detector. This spectrometer,
about the size of a deck of cards, has both USB and serial ports, and is
powered entirely by the connected computer.
A telescope, with a field of view of approximately 1 degree, was
designed to channel the incoming light onto the fiber optic cable end. The entire setup is enclosed in a Pelican
Case and mounted on a tripod to make measurements. |
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