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Tom and Jennifer Polakis | profile | all galleries >> 2019 >> Washington DC -- October 2019 >> U.S. Naval Observatory tree view | thumbnails | slideshow

U.S. Naval Observatory

26 Dome
26" Dome		 With Geoff Chester
With Geoff Chester		 USNO 26 Observatory Floor Elevation
USNO 26" Observatory Floor Elevation		 With Geoff Chester and Dan Ward
With Geoff Chester and Dan Ward
Geoff Chester and 12
Geoff Chester and 12"		 12
12"		 12
12"		 Library
Library
Copernicus book
Copernicus book		 Asaph Hall's original Mars moons notes
Asaph Hall's original Mars moons notes

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