In 1922 Carleton professor Edward Fath constructed one of the nation's first photoelectric photometers in Goodsell.
2.
The photoelectric photometer and the Boller and Chivens spectrograph have not been in use for more than a decade.
3.
For example, there was a photoelectric photometer fed by a 16 inch telescope with a six-position filter wheel.
4.
For data acquisition, students can use a research-grade SBIG STL-1001E CCD imaging system, a high-resolution SBIG spectrograph, and a photoelectric photometer.
5.
These have largely been replaced with CCD cameras that can simultaneously image multiple objects, although photoelectric photometers are still used in special situations, such as where fine time resolution is required.
6.
BMO's main telescope was a Cassegrain reflector built by Astro Mechanics and installed in 1969 . It was equipped with a Boller and Chivens spectrograph, a spectrophotometer, and a photoelectric photometer.
7.
Historically, photometry in the near-infrared through long-wavelength ultra-violet was done with a photoelectric photometer, an instrument that measured the light intensity of a single object by directing its light onto a photosensitive cell.
8.
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.
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