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Miniature Differential Optical Absorption Spectrometer

(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.

More equipment pictures

Educational Use

Field Research

 

 

 


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http://www.geo.mtu.edu/volcanoes/vc_web/tools/index.html -- Revised: 10 April 2003
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