Robert Goff, Norman James, John Dobson, Biran Rhodes, and George McArthur

Norman James with his 12-1/2" F/5 'Sphere Mount'

Jim Shreckengosh with his 14-1/2" Newtonian

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:

• John Dobson, "Grinding Large Off-axis Paraboloidal Mirrors"
• Raymond G. Coutchie, "Marriage and Astrophotography"
• John Laborde, "Construction of a Mirror Grinding Machine"
• Arthur DeVany, "Using a Double-wire Test and Laser Interferometer in Figuing Optical Elements"
• Maurcie V. King, "Using Groved Tools to Give a High Quailty Finish"
• George Carroll, "Using a Birefringent Filter to Observe the Sun"

Merit Awards (partial):

• Norman James, 1st Place for Optical Design - 12-1/2" F/5
• Norman James, 1st Place for Mechanical Design - 12-1/2" F/5
• John Dobson and Brian Rhodes
• George McArthur, 8" F/7 Newtonian

The San Francisco Sidewalk Astronomers' telescopes (too bad we don't have a color photograph)