Site of Mason & Dixon's "Stargazing" Observatory

Site of Mason & Dixon's "Stargazing" Observatory (HM1S6F)

Location: Coatesville, PA 19320 Chester County
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Country: United States of America
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N 39° 56.229', W 75° 43.944'

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— 1764 —

Site of
Mason & Dixon's
"Stargazing" Observatory

In the roadbed near this stone, a square iron spike marks the original location of the astronomical observatory used by surveyor-astronomers Charles Mason and Jeremiah Dixon in the year 1764 to determine Latitude from the stars.

It was from here they began measuring 15 miles due south, to lay out the boundary between Maryland and Pennsylvania - Which came to be known as Mason and Dixon's Line.

This plaque dedicated August 29, 2013, by Surveyors Historical Society and the Mason-Dixon Line Preservation Partnership.
HM NumberHM1S6F
Year Placed2013
Placed BySurveyors Historical Society and the Mason-Dixon Line Preservation Partnership
Marker ConditionNo reports yet
Date Added Thursday, May 12th, 2016 at 9:04am PDT -07:00
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Locationbig map
UTM (WGS84 Datum)18S E 437424 N 4421038
Decimal Degrees39.93715000, -75.73240000
Degrees and Decimal MinutesN 39° 56.229', W 75° 43.944'
Degrees, Minutes and Seconds39° 56' 13.74" N, 75° 43' 56.64" W
Driving DirectionsGoogle Maps
Area Code(s)610, 484
Closest Postal AddressAt or near 901-905 Stargazer Rd, Coatesville PA 19320, US
Alternative Maps Google Maps, MapQuest, Bing Maps, Yahoo Maps, MSR Maps, OpenCycleMap, MyTopo Maps, OpenStreetMap

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