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David's Astronomy Pages
Notes - Session 296 (2008-07-23)
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Notes
(S285)
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Notes
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Goto Images from 2008-07-23
Based on focus measurements from sessions S267 to
S296, a revised temperature
coefficient of -143.1 steps per deg C has been estimated for my LX200 telescope
normal setup (LX200 8", f/10 - operating at f7.4 , focal length
1498mm) . This is equivalent to a focus change of 0.0122"/degC
(based on TCF-S step size of 0.000085")
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Notes - Session 286 (2008-07-23) |
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2015-05-16
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