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The New Mexico Sundial

The New Mexico SundialThe New Mexico SundialThe New Mexico Sundial

35° 4.67' N, 106° 36.71' W

35° 4.67' N, 106° 36.71' W 35° 4.67' N, 106° 36.71' W

Equinox, 2018

A time lapse video of March 20, 2018 - the shadow mark travels along a straight line, right down Route 66. Shot frames every 30 seconds for the whole day.


  Audio, with full respect, by Pink Floyd, The Dark Side of the Moon, 1973 

Solar Eclipse workday

A fairly typical data collection day, August 21, 2017. This was the day of the major US Solar eclipse, but unfortunately the morning was quite cloudy in Albuquerque. I chose to record each 15 minutes on the 21st of each month. 

Lunar Time

A full Moon gives the same effect as the Sun, only fainter. If the moment of full Moon happens during the night the time readings are actually very close to accurate! I shot a frame every 30 seconds, at ISO 800 and f = 3.1 with shutter open for 13 seconds to capture enough light. This was taken the night of August 25-26, 2018, when the Moon reached full at 4:56 am. If done in winter the shadow length will be much longer. 

Audio by Cat Stevens, Moonshadow from 'Teaser and the Firecat', 1971. 

Polar Alignment

     This still shot taken under a full Moon shows the gnomon pointing to Polaris - the bright star just above the roofline. Its top edge needs to point towards your celestial pole so that it is parallel to the axis of the Earth. The angle of the gnomon is just your latitude, in this case 35 degrees and a bit. 

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May a Thousand Sundials Bloom!


Copyright © 2018 Jay Campbell  - All Rights Reserved.

 Audio, with full respect, by Pink Floyd, Time from 'The Dark Side of the Moon', 1973 and  Cat Stevens, Moonshadow from 'Teaser and the Firecat', 1971. 


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