'Show and Tell' Demonstration Talks








Ancient Light

The Universe is vast and ancient. Large telescopes have imaged galaxies that are billions of light-years distant. Is it possible to capture an image of one of these very remote objects without a telescope?


  Recording   Handout







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.


  Recording   Handout







iOptron SkyTracker

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.


  Recording   Handout







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: https://www.liv.ac.uk/~sdb/Astro/K2.pdf


  Recording   Handout



Steve Barrett       February 2021

S.D.Barrett@liv.ac.uk
Demonstrations are nominally 20 minutes in length

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