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Focal lenth
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11-02-2014, 11:58 AM
cometcatcher
(Kevin)
<--- Comet Hale-Bopp
Join Date: Jan 2005
Location: Cloudy Mackay
Posts: 6,542
Cheaper optics don't barlow well. Neither do fast achro refractors. Under those conditions it's better to use something at native focal length.
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