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[c2pu] The E-Telescope
The E-Telescope
 
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Thursday 27 September 2012
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The E-Telescope
The E-Tel will have an F/12.5 focus, quite similarly to W-Tel, plus an F/35 “coudé” focus and should be available early 2014. The F/12.5 focus of E-Tel will be either a Cassegrain or (...) Read the whole article