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Orion Dew Control
 
Orion Dew Zapper for 153mm (6") Cassegrains
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Orion Dew Zapper for 153mm (6") Cassegrains
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  • Electronic dew elimination system keeps dew from forming on the corrector lens
  • Keep dew from accumulating on optical surfaces and ruinign the quality of your views and astrophotos
  • Plugs into a car cigarette lighter or a field battery (sold separately)
  • Fits 6"/150mm Maksutov-and Schmidt-Cassegrains
  • Runs on 12-volt DC power


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Item #  03513
Mfg Model #  03513
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With the 153mm (6") OTA Orion Dew Zapper, you'll never have to stop observing to remove condensation from the front plate of your Schmidt-Cassegrain or Maksutov-Cassegrain. An unprotected corrector lens will radiate heat, quickly cooling to below ambient air temperature, allowing dew to form. Dew Zapper gently replaces lost heat, bringing the temperature of the corrector lens back above the dew point. Dew can't form, and you never get "heat wave" disturbances like those caused by warm-air blowers and heated dew caps. The flexible, fiberglass-reinforced heating element straps securely in place with a Velcro fastener. Runs on 12-volt DC power. Plugs into a car cigarette-lighter receptacle or a "field battery," delivering up to 20 watts, 2 amps. All models include a 10' cable.

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Orders received by noon Pacific Time for in-stock items ship the same business day. Orders received after noon will ship the next business day. When an item is not in-stock we will ship it as soon as it becomes available. Typically in-stock items will ship first and backordered items will follow as soon as they are available. You have the option in check out to request that your order ship complete, if you'd prefer.

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Orion Dew Zapper for 153mm (6") Cassegrains
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1 With the Orion 6" Dew Zapper, you'll never have to stop observing to remove condensation from the front lens of your Schmidt-Cassegrain or Maksutov-Cassegrain. Runs on 12-volt DC power from a car cigarette-lighter receptacle or a field battery.
Rating??
4 / 5
4 / 5
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4 / 5
4 / 5
Works every time, but beware of velcro
PostedJanuary 9, 2011
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Andrew
 
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This is basically a piece of rubber with a resistive element around its length. It heats quickly (under 15 seconds to max temperature) and I have never had dew form on my SCT. It consumes 1.7 amps at 12 volts if you are battery-conscious. The only downside is the velcro that closes the loop and allows you to adjust tightness uses an adhesive which is not temperature resistant. After just three sessions at 10 deg F, the velcro fell off. I remedied this by using packaging tape to permanently fix the rubber to a loop size that is taut for my telescope. I give it four stars despite this design flaw because I was able to fix it in the field before dew formed on my telescope :)
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