[Source: NASA/GISS, http://data.giss.nasa.gov/rsp_air/ ]
The NASA Goddard Institute for Space Studies (NASA/GISS) offers
Photopolarimetry Measurements of Aerosols data taken by the Research
The data from the Coronagraph/Polarimeter consist of digital images of the
solar corona taken through various filters at visible wavelengths.
The scientific objectives of the Coronagraph/Polarimeter ...