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Old 03-08-2017, 10:09 AM
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Allan_L (Allan)
Member > 10year club

Allan_L is offline
Join Date: Mar 2008
Location: Central Coast NSW
Posts: 3,162
To cool a DOB without using a fan, take the end cap off and wait.
Time depends on temperature differential between where the scope has been and where it will be operating.
The open design makes DOBs pretty easy to cool, especially less than say 14".

But with your tube caps off, placing the DOB in a horizontal position will help prevent anything from landing on the mirror. Likewise, if any wind is blowing, face away from wind to prevent anything blowing into the tube.

No its not a stupid question, but you may get more responses if you create your own thread, instead of post 1796 of a 13 year old thread that not everybody reads.

The forum Beginners Equipment discussions is possibly a better choice for a topic like this. maybe?
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