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Eratosthenes closeup
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25-06-2007, 08:52 PM
2020BC
(Bill Christie)
Bill Christie
Join Date: Dec 2005
Location: Canberra
Posts: 472
Eratosthenes closeup
Closeup with the Meade SN-8; x4 Powermate and x2 Shorty-Plus Barlow.
f/32 or about 6.4 metres focal length.
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