Good to see you are enjoying your dob. The OTA can handle a bit of moisture. I just keep it horizontal when not in use and left out for a while. The mount is another story. Apparently the finish is one of the areas where GSO had to cut some corners to achieve the competitive price. The MDF of the mount will not respond well once water does get to it. I haven't sealed mine yet, but it's on my to-do list. I'm thinking something silicone based.
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