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What are these stains?
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22-02-2011, 06:12 PM
jjjnettie
(Jeanette)
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Join Date: Feb 2005
Location: Monto
Posts: 16,741
It could be marks left from cleaning the sensor.
Taking flats should clear it up.
But I wonder if you've captured some very faint Northern Lights?
jjjnettie
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