Trying to get some sort of consensus here or advice from anyone with experience of this. I live in Puerto Rico about a mile or so from the sea. I'll be getting a C14 for planetary imaging and I'm wondering about the use of tempest fans on a new C14 (not the edge version) when there is salt in the air.
The OTA has the vents so it's not a completely closed system anyway but I've the following questions:
1. Would the salt in the air damage the inside of the OTA over time? The outside I can wipe off with a damp towel - doing that to the inside, not so easy. We have high humidity here on the island but there will be some nights I can image with no dew forming.
2. Would tempest fans blowing air into the OTA introduce anymore salt (to stay) than what would come in through the vents anyway? Meaning - what would have to happen for salt to be deposited inside, rather than just getting sucked back out again in the air.
3.Would bringing the OTA down to equilibrium using a fan blowing on it from the outside be a better option given that we don't have large temperature swings during the night here?
I've already had one conversation with an imager close to the sea who doesn't use them.
Edited by dhammy, 01 August 2020 - 06:26 PM.