2.2.0 spase://SMWG/Observatory/EvansSolarFacility Evans Solar Facility ESF John W. Evans Solar Facility 2019-05-05T12:34:56Z The John W. Evans Solar Facility (ESF) is two telescopes in one, both tracking the solar cycle. A 16" coronagraphic telescope maps magnetic changes in the Sun's outer atmosphere. A special set of 12" coelostat optics "squints" so the Sun appears as a pinpoint, allowing an "apples and apples" comparison with the cycles of distant stars. spase://SMWG/Person/UNKNOWN GeneralContact John W. Evans Solar Facility Homepage https://nsosp.nso.edu/telescopes/john-w-evans-solar-facility/ Detailed information about the Evans Solar Facility including instruments and data. spase://SMWG/Observatory/NSO Earth.Surface