Posted on 09/18/2022 5:04:31 PM PDT by MtnClimber
Explanation: If you went outside at the same time every day and took a picture that included the Sun, how would the Sun's position change? A more visual answer to that question is an analemma, a composite image taken from the same spot at the same time over the course of a year. The featured analemma was composed from images taken every few days at noon near the village of Callanish in the Outer Hebrides in Scotland, UK. In the foreground are the Callanish Stones, a stone circle built around 2700 BC during humanity's Bronze Age. It is not known if the placement of the Callanish Stones has or had astronomical significance. The ultimate causes for the figure-8 shape of this and all analemmas are the tilt of the Earth axis and the ellipticity of the Earth's orbit around the Sun. At the solstices, the Sun will appear at the top or bottom of an analemma. The featured image was taken near the December solstice and so the Sun appears near the bottom. Equinoxes, however, correspond to analemma middle points -- not the intersection point. This coming Friday at 1:04 am (UT) -- Thursday in the Americas -- is the equinox ("equal night"), when day and night are equal over all of planet Earth. Many cultures celebrate a change of season at an equinox.
For more detail go to the link and click on the image for a high definition image. You can then move the magnifying glass cursor then click to zoom in and click again to zoom out. When zoomed in you can scan by moving the side bars on the bottom and right side of the image.
THAT is a cool picture!
A year in the making!
Wow! That is really neat!
The Standing Stones of Callanish
by Jon Mark
https://www.youtube.com/watch?v=gWI-4bAZfyE&ab_channel=Charlie%22Lev%22Reefback
58.2 N, 15.7 W.
The pictures were taken at local civil noon? They’ve got Daylight Savings Time and then the mean sun is just over an hour to the west.
Solar noon would be more like 1:20 p.m. this time of year. Would that make a difference in the size of the loops?
And those Callanish sure had big stones.
Wish I had the patience to do an analemma
Cool! :-)
Anna Lemma?...I think I dated her sister in High School.................😁
And not only that, the location of the stones on the latitude wouldnt allow for that perfect vertical above them. Just another bs Photoshop gimmick to impress low IQ people...
I would have thought 15 degrees of longitude would result in an hour difference - but it’s only 20-30 minutes? Solar noon at London is still 13:00.
I guess because it’s so far north.
Analemmas have never been perfectly horizontal. Always at least leaning 20 degrees to the south...
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