
HERE IS THE contribution of James T Barkelew, an engineer and patent attorney of Los Angeles (Great Republic Life Building), which we promised last month as a continuation of an article on photo-electric guiding of telescopes, written by Wilbur Silvertooth. It indicates how far he has progressed. Other amateurs are invited to take up the same problem and work on it. If a few amateurs will pound it hard enough, amateurdom may, as a result have something to contribute to professional astronomy. Sic 'em, Tige.
SOME time ago. George Mitchell and I did a little arm-chair work on automatic telescope guiding. George is a telescope nut. In his spare moments he is the guiding genius of the Mitchell Camera Corporation. In the course of evolving several different physical schemes for automatic guiding of telescopes, some shown in the sketches, we have found several difficulties that any successful automatic guide apparently must overcome.
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