MAKE A MEME View Large Image Blink comparator 2.JPG en Blink comparator in the Meridian hall of the Helsinki observatory Made by Carl Zeiss in early 20th century fi Stereokomparaattori Helsingin observatorion Meridiaanisalissa Valmistanut Carl Zeiss 1900-luvun alussa ...
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Keywords: Blink comparator 2.JPG en Blink comparator in the Meridian hall of the Helsinki observatory Made by Carl Zeiss in early 20th century fi Stereokomparaattori Helsingin observatorion Meridiaanisalissa Valmistanut Carl Zeiss 1900-luvun alussa own MKFI 2012-12-01 Collections of the Helsinki Observatory Blink comparators 2012 in Helsinki December 2012 in Finland Taken with Canon EOS 60D Taken with Canon EF-S 15-85mm F3 5-5 6 IS USM Carl Zeiss company Files by User MKFI
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