'Show and Tell' Demo Talks
Building a Tellurion
A tellurion is a model of the Earth-Moon-Sun system that demonstrates the changing seasons, the phases of the Moon, and predicts eclipses.
The iOptron SkyTracker is a motor-driven camera mount that allows long-exposure photographs of the night sky to be taken without the stars trailing.
K2 Star Tracker
K2 is a low-cost star tracker that I designed, built, tested and then used to photograph the night sky.
A description of the components and the construction is here:
Demonstrations are nominally 20 minutes in length
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