Astro DIY

Dew Heater for 8in OTA

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Dew Heater for 8in OTA
Made from modelling plastic, 30m of 32swg enamelled copper wire, takes approx 2A @12V. Elasticated strap with velcro fittings - heat is applied to approx 40% of the circumference of the tube between focusser and Maksutov corrector plate - seems to work. I run it at about 15W using a variable power supply.
Posted by Doug on April 18, 2010 Full Size|

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