Date: April 15-16, 1972
Attendance: 240
The San Francisco Sidewalk Astronomers again made their appearance. In keeping with the times, they were painted up their telescopes in "flower power" colors with large astronomical symbols on the side of the tubes. I am sure that the conservative amateur astronomy crowd was befuddled by this new development.
Speakers
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John Dobson, "Grinding Large Off-axis Paraboloidal Mirrors" |
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Raymond G. Coutchie, "Marriage and Astrophotography" |
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John Laborde, "Construction of a Mirror Grinding Machine" |
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Arthur DeVany, "Using a Double-Wire Test and Laser Interferometer in Figuring Optical Elements" |
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Maurice V. King, "Using Grooved Tools to Give a High Quality Finish" |
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George Carroll, "Using a Birefringent Filter to Observe the Sun" |
Merit Awards (partial list)
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Norman James, 1st Place for Optical Design - 12-1/2" f/5 |
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Norman James, 1st Place for Mechanical Design - 12-1/2" f/5 |
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John Dobson and Brian Rhodes |
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George McArthur, 8" f/7 Newtonian |
