This is a detail of my pushpin analemma (in progress).

The gnomon’s shadow only shows up for about 30 minutes each day, and during late spring and early summer, its shadow was obscured by the shadow of The Offending Column.

August 10, 2006 at my desk at work in Oakland, CA.

This is an overview of my pushpin analemma (in progress).
You can see the gnomon, the shadow of The Offending Column, the 4 points on the analemma (with date/timestamps), and the extra pins.

August 10, 2006 at my desk at work in Oakland, CA.

This is a shot out the window that I use to make my analemma.

Note “the offending column”, which cast its shadow over my pushpin analemma from Memorial Day through Independence Day.

I had to start my desktop analemma in response. I’ve put a dot at the “point” of the gnomon for the desktop analemma.

August 10, 2006 at my desk at work in Oakland, CA.

This is a detail of my desktop analemma (in progress).
The tape marks along the right were made once I realized how fast the gnomon’s shadow moves and therefore how accurate the timing of the dot must be. The ones on the left side were a little more haphazard. I guess I’ll fix those next year…

August 10, 2006 at my desk at work in Oakland, CA.

This is an overview of my desktop analemma (in progress).
The pushpins in the wall are just what I do with extra pins when I’m bored. (: (I used a red one for Antares…)
August 10, 2006 at my desk at work in Oakland, CA.

This is a detail of how quickly the shadow of the gnomon moves.

The lens cap was not moved. The rightmost piece of tape in the upper images is the one detailed in the lower images. Note how far off the gnomon’s “point” moves in 1 minute, between 9:00 and 9:01.

August 10, 2006 at my desk at work in Oakland, CA.

You should make an analema on your desk…

—–Original Message—–
From: Jimbo S. Harris [mailto:jimbo@jimbo.net]
Sent: Wednesday, April 19, 2006 9:34 AM

To: Harris, Kristi
Subject: morning

Hi,

Thanks for waking me up this morning; I’d *still* be snoozing. whew.

Work is going OK.

I get a lot of sunshine in my cube in the morning. I’ve been tracking

when
it appears from behind this one building and when it goes behind the
other.
The times change a little every day.

Love,
J

Sun, Feb. 12, 2005. NexImage camera first light.