Analemma of the sun
Taken by Steven Riegel on December 31, 2016 @
Colorado Springs, CO
Click photo for larger image
| |
Camera Used: Unavailable Unavailable
Exposure Time: Unavailable
Aperture: Unavailable
ISO: Unavailable
Date Taken: Unavailable
|
|
| More images
Details:
I opened up a year-long (1 Jan - 31 Dec 2016) analemma exposure today. The result is a record of the position of the sun on the hour between 7:00 am and 3:00 pm every day for a full year.
The camera is just a light-tight box with a pinhole in the side. I put an 8x10" piece of B/W photo paper inside. The pinhole was uncovered for two minutes each hour by a rotating paper mask attached to a cheap electric clock. The image is "burned" into the photo paper by the bright sunlight. "Developing" the image simply requires scanning it, inverting the colors, performing some contrast stretch and flipping the image left-right.
I had a technical glitch this fall where the clockwork got misaligned (the jagged patches). The solid line through all the figures marks the equinox.
Photographer's website:
No URL provided.
|
|
|
