thu8an.blogspot.com
Sun, moon and stars.: Uriel's machine.
http://thu8an.blogspot.com/2014/10/uriels-machine.html
Sun, moon and stars. Exploring archaeoastronomy from 52.4502° N, 2.0509° W. Friday, 17 October 2014. Should you wish to build the one described in the book, here's how. The Book of Enoch begins with the fourth portal, which contains the Vernal equinox. And the sun rises from that portal and sets in the west, and returns to the east and rises thirty mornings in the third portal and sets in the west in the third porta. Mark the end of the shadow with a pebble. Repeat throughout the day. Declination is the ...
thu8an.blogspot.com
Sun, moon and stars.: The Sanctuary. Day before the Summer Solstice 2015.
http://thu8an.blogspot.com/2015/06/the-sanctuary-day-before-summer.html
Sun, moon and stars. Exploring archaeoastronomy from 52.4502° N, 2.0509° W. Tuesday, 23 June 2015. The Sanctuary. Day before the Summer Solstice 2015. This photo makes it look worse than it was. I laid out the string. The burial stone '1' is marked by my bag in this photo. If you put 'posts' in the plan and rotate it to look through, you will see that there is a gap in the posts that would allow you to have walked through the monument south-west to north-east. But we were off to Swindon to meet my son, a...
thu8an.blogspot.com
Sun, moon and stars.: Vitruvious's analemma (part 2).
http://thu8an.blogspot.com/2014/10/vitruviouss-analemma-part-2.html
Sun, moon and stars. Exploring archaeoastronomy from 52.4502° N, 2.0509° W. Thursday, 2 October 2014. Vitruvious's analemma (part 2). Line EI is the horizon. Line NC is at the angle of the equator, therefore 90 degrees to line QP. QP is at the angle of latitude for your location, measured from the horizon line EI. AGD and ADH are at an angle equal to the obliquity of the ecliptic, drawn either side of the equator line NC. Points S and V:. Are where the lines LG (summer) and KH (winter) cross the horizon.
thu8an.blogspot.com
Sun, moon and stars.: The angles of the Sun.
http://thu8an.blogspot.com/2013/09/the-angles-of-sun.html
Sun, moon and stars. Exploring archaeoastronomy from 52.4502° N, 2.0509° W. Friday, 20 September 2013. The angles of the Sun. To read a more simple version and to see how to use shadows to find solar elevation continue. If you wish to work out where the Sun could appear in the sky when the tilt of the Earth was a slightly different angle, you will need to know the angle of the ecliptic (angle of Earth's tilt) for the time frame you are interested in, and the latitude of the site. One other thing though.