These include cameras for fast photography, photoelectric photometers, a single-channel photoelectric spectrum scanner, a medium resolution spectrograph, a quartz-prism calibration spectrograph, infrared photometer, image tube spectrograph, a Universal Astronomical Grating Spectrograph ( UAGS from Zeiss ), high-resolution echelle spectrograph and a polarimeter.
42.
The "'Zurich Imaging Polarimeter "'( "'ZIMPOL "') provides diffraction limited classical imaging and differential polarimetric imaging ( DPI ) at 15 mas resolution in the visible spectrum and is one of three scientific subsystem integrated into the VLT-SPHERE instrument used at VLT's Unit Telescope 3, Melipal.
43.
If the CO detector captures and displays gas measurements, then it is properly classified under subheading 9027.10, which provides for " Instruments and apparatus for physical or chemical analysis ( for example, polarimeters, refractometers, spectrometers, gas or smoke analysis apparatus; instruments and apparatus for measuring or checking viscosity, porosity, expansion, surface tension or the like; instruments and apparatus for measuring or checking quantities of heat, sound or light ( including exposure meters ); microtomes.
44.
He later served as principal investigator for several research projects, including HAO s Coronagraph / Polarimeter Experiment that was launched aboard NASA s Solar Maximum Mission spacecraft ( 1975 1979; 1984 1986 ), the Rocket Coronagraph Experiment ( 1975 1979 ), and the Coronagraph / X Ray / XUV experiment as part of the Solar Polar Mission ( 1978-1983 ) . In a joint project with the Harvard / Smithsonian Center for Astrophysics, he was one of the principal investigators for a series of solar observing rocket flights.
