Dew shield: Difference between revisions
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A '''dew shield''' is a device used to prevent [[moisture]] or [[condensation]] buildup on the [[Photographic lens|lens]] of a [[camera]] or [[telescope]] collector during |
A '''dew shield''' is a device used to prevent [[moisture]] or [[condensation]] buildup on the [[Photographic lens|lens]] of a [[camera]] or [[telescope]] collector during night observations.<ref>{{cite web|url=http://www.skyandtelescope.com/astronomy-resources/dealing-with-dew/|title=Dew Shields|publisher=skyandtelescope.com|accessdate=November 20, 2017}}</ref> The dew shield either shades the lens or provides a small amount of warm air directly in front of the lens or collector to prevent [[dew]] from collecting on the element. Some dew shields work by using a heating element that keeps the objective lens warm enough to keep the dew from collecting.<ref>{{cite web|url=https://www.astronomics.com/heated-dew-shields-lens-shades-celestron-telescopes_c393.aspx|title=Heating element|publisher=astronomics.com|accessdate=November 20, 2017}}</ref> |
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Latest revision as of 10:22, 21 November 2017
A dew shield is a device used to prevent moisture or condensation buildup on the lens of a camera or telescope collector during night observations.[1] The dew shield either shades the lens or provides a small amount of warm air directly in front of the lens or collector to prevent dew from collecting on the element. Some dew shields work by using a heating element that keeps the objective lens warm enough to keep the dew from collecting.[2]
References
[edit]- ^ "Dew Shields". skyandtelescope.com. Retrieved November 20, 2017.
- ^ "Heating element". astronomics.com. Retrieved November 20, 2017.
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