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G'day Slice..Oh yes, with a fan on it takes less time, agreed. I've been experimenting with fans for a couple of years. On John's 12" I dont think he's using a fan...or is he? If he's not, an hour is not enough time....not in my experience anyhow. Of course, that would depend on how far in temp the mirror has to drop to reach ambient. I cheat these days & bung the OTA in the lounge room & put the air conditioner on, taking temp readings of the mirror compared to the temp outside. when the mirror is 2 degrees below ambient, in the saddle the OTA goes.
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