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7th of October 2008 (Tue)
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#1 |
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Senior Member
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Question for astronomers/astrophysicists
Can a "noon" clock such as the one pictured be used for anything else? Full moons on specific dates for example? A hole in the slot provides for a beam of light at noon to strike the indicator dots on the stone.
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Mike Ault Have 20D will travel (20D 17x85 IS USM, 90x300 EF,70x200 IS USM L2.8, 50mm mac, 100mm mac, 16x55 EF all Canon) http://www.scubamage.com |
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