ULTRAVIOLET SPECTROMETER

SCIENCE OBJECTIVE:

INSTRUMENT DESCRIPTION: This instrument will provide the UV-A and UV-B spectrum
of the sun over the course of a day.  It will be mounted to a sun tracker via a fiber optic cable which
transmits the sunlight to a grating which spreads the sunlight across the ultraviolet spectrum onto
an optical linear array of photodiodes that are sensitive to ultraviolet light.  The range is approximately
280 to 400 nm using a 32 element linear array giving a resolution of about 4 nm.  Theoretically, UV-C
below 280 nm is filtered out by atmospheric ozone and shouldn’t contribute to the sensor’s readings. 
This project involves the selection of the fiber optics cable and receiving optics including slit size
and interference filter wavelength, the layout of the optical path to make use of a 600 line, blaze 300
grating and the linear array, and the electronics to read out the information from the array.

This is the 32 element ultraviolet sensitive linear array for use in the

spectrometer.

SPECIFICATIONS:

PROJECT STATUS:

INSTRUMENT COSTS:

APPLICABLE WEB SITES:

DATE: