Reply To: Suck or blow

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Grant Privett

In the spirit of full disclosure…. 🙂

Was -7.2C here last night (still -3.2C by 9:15) with a very heavy hoarfrost/fog in the early hours.

Looked in dome at 11:00 – by which time the air was registering as +5C – and found some condensation on the mirror.

Well , there goes my theory….

So, henceforth will also use a dew heater band near the secondary plus the fan. Can’t help matters having frost on the inside of the tube some nights. Don’t want to use too much power though.