mirror-frost

Frost on a primary mirror? outside temp 1.5 deg Celsius, RH 93%, cooling of mirror ON might mean <0deg C temp

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  • Title: mirror-frost
  • Description: Frost on a primary mirror? outside temp 1.5 deg Celsius, RH 93%, cooling of mirror ON might mean <0deg C temp
  • File name: mirror-frost.jpg
  • Captured: 2013-Sep-09 23:15:30
  • Owner: Pavel Pech
  • Dimensions: 1400 x 1276 px

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