From 80° the aperture is shaped like a human eye.
The far upper edge and near lower edge have very similar, but inverted, eliptical profiles.
Image credit: © Royston E Naylor
stonefree
As one moves further away from the Quoit along the 80° line, the ‘eye’ becomes narrower.
Image credit: © Royston E Naylor
The ‘eye’ continues to narrow, even as you approach the entrance stile.
Image credit: © Royston E Naylor
Even beyond the field and into the road, one can still clearly see daylight through the ‘eye’.
Image credit: © Royston E Naylor
Taken by lying flat on the road below the car park. The aperture is now so tiny that this is almost the extinction angle. However, the original level of the hill may have been lower than the road surface!
Image credit: © Royston E Naylor
Part 1 of sequence – from approx E of SE
Image credit: © Royston E Naylor
Part 2 of sequence – from approx East
Image credit: © Royston E Naylor
Part 3 of sequence – from approx E of NE
Image credit: © Royston E Naylor
Part 4 of sequence – approx NE
Image credit: © Royston E Naylor
Part 5 of sequence – from approx N of NE
Image credit: © Royston E Naylor
From directly below, the capstone aperture looks to be a round-cornered square (squircle)
Image credit: © Royston E Naylor
Summer Solstice Sunrise 2010
This is an actual photograph except that the nearby Cottage has been cloned out
Image credit: Photos © [email protected]
Detail of Foggy sighted on TQ
Image credit: horsedrawn pictures
Close-up of Foggy & Compo
Image credit: horsedrawn pictures
Foggy & Compo – aligned with Trethevy Quoit?
Image credit: horsedrawn pictures
Externally ‘worked’ quadrant on stone 5 becomes very noticeable when obliquely lit from late p.m. until sunset. The triangular ‘pointer’ moves up the curved quadrant as the sun goes down.
Image credit: © Royston E Naylor
Remnant ‘carving’ on the inside of stone 4, only visible when obliquely lit.
Image credit: © Royston E Naylor
Remnant ‘carvings’ on the inside of stone 6, only visible when obliquely lit.
Image credit: © Royston E Naylor
Circumpolar stars 4 min exposure
Image credit: © Royston E Naylor
Stone 6 notch shadow 10 mins before local noon (for comparison with next image)
Image credit: © Royston E Naylor
Stone 6 notch shadow at local noon exactly (for comparison with previous image)
Image credit: © Royston E Naylor
Sunrise, stormy sky & Raven
Image credit: © Royston E Naylor
Capstone underside lit by sunrise
Image credit: © Royston E Naylor
Sunburst through capstone aperture
Image credit: © Royston E Naylor