Visualization of the Cislunar Potential
In the past few days I’ve been following the playback of the Apollo 11 mission in “real time” (delayed exactly 50 years) at https://apolloinrealtime.org/11/. Among all the news related to the 50th anniversary of the Apollo 11 moon landing I…
Summer Solstice 2019 in Wooster Hall
As we have done in past years, a small group of those interested came to Wooster Hall to observe the skylight lights cross over the staircase at Solar Noon (at 12:58:16 EDT). This year the actual Solstice (at 11:54 EDT)…
Vernal Equinox 2019
What a difference a year makes. Last year I made a time-lapse video of the Vernal equinox in Wooster Hall by standing next to a wall and taking a photo about once a minute for an hour. This year I…
Wooster Hall Rooftop Mystery
A few weeks ago I visited Wooster Hall with a time-lapse camera to try to see what happens to the light from the skylight over the main staircase at solar noon on the Winter Solstice. I was a few days…
Winter Solstice in Wooster Hall
Wooster Hall at SUNY New Paltz has a neat feature: the main staircase is aligned directly North/South, and skylights are positioned above it so that at solar noon on the equinoxes the bottom of the staircase is illuminated by four…
Running a task at a specified time on a Mac
Unix computers have a simple command-line feature called “at” which lets you schedule a command, or a series of commands, to be run at a specific time. For example, if you want to download a large file in the…
Summer Solstice in Wooster Hall
Wooster Hall at SUNY New Paltz has a neat feature. The main staircase is exactly aligned along a north-south line, and skylight windows in the ceiling were placed so that light from those windows lines up at the bottom of…
Vernal Equinox in Wooster Hall: Irregular Interval Time-Lapse Animation
Wooster Hall on the SUNY New Paltz campus was completely remodeled recently, and a neat new feature is an alignment of the skylight over the main stairway such that the bottom of the stairs is lit up at exactly solar…
Vernal Equinox in Wooster Hall
The newly updated Wooster Hall has a neat feature at the bottom of the staircase between the first and second floors. Above that stair there is a large skylight with 4 windows, and at the bottom of the stairs there…
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