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DEW FAN KILLER on 12" inch GSO dobsonian telescope primary mirror

Tiago Ferreira
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Tiago Ferreira

Tiago Ferreira

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This short video shows how fast and efficient a mirror cell fan can be getting rid of the dew. After a session i forgot to leave the fan turned on and the dew quickly assault my primary mirror because of the temperature difference inside. So i decided to record the important fan job.

 

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