Would wrapping dew heaters around the tube then putting on the insulation and running at very low power to just maintain a constant temperature also work? This would keep the entire tube and corrector at a nice constant temperature no matter what the outside temperature was, especially if a thermostat was rigged into the system.
This might just be the next aftermarket accessory to sell like crazy
And that is exactly the idea that I'm working on already for a year or so!! I didn't mention it earlier because I mostly want to be fully sure, and have a good image within myself on the advantages and disadvantages, before I post about it.
But its a big yes ! Up till this moment, I didn't find any good reason against it!
The thought behind it is quite simple:
With proper insulation, you can immediately use your scope after puting it out in a colder environment.
During that situation, the temperature of the inside of the scope definitely is higher than ambient, for a very long time. So already that fact, tells me that it should not give any problems to keep the inside of that scope warmer than ambient permanently.
And indeed, with proper insulation, the energy you'll need to put in to keep that inside temperature higher, will be not much.
But I would choose for putting an evenly heated blanket directly on the tube, under the insulation.
That way, even less energy is needed, as lots of energy is not radiated in the coldness of ambient. Which of course would be the case when putting the heater on top of the insulation.
Edited by yellobeard, 20 January 2018 - 07:19 AM.