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Old 01-09-2007, 03:37 AM
Ingo
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Ingo is offline
 
Join Date: Apr 2007
Location: Albany, NY
Posts: 559
F Number in lenses will limit light also? If you're imaging Jupiter widefield with Antares with F1.8...you'll get a ton of light. If you then bring it down to F16, you might only get a faint jupiter & a non-visible antares.

F Number effects the amount of light that hits the sensor.
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