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Optec Pyxis Camera Field Rotator
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13-12-2018, 04:19 PM
gerry aarts
(Gerry)
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Join Date: Dec 2005
Location: Penrith, Sydney, Australia
Posts: 73
The field derotator compensates for field rotation in AltAz scopes.
Exposures up to 5 minutes are possible.
Having said that, there is no substitute for a well aligned EQ mount for Astro photography where you can do much longer exposures.
gerry aarts
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