Dew Heaters

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Accessories / Visual and Everything Else / Dew Heaters
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Dew Heaters
Moisture condensing on the eye lens of your eyepiece or on the front lens of your telescope (in other words, dew) can cut short an evening's observing or ruin a long exposure deep space photograph if it forms during the exposure. If enough moisture condenses, it also has the potential of getting into the optical tube or eyepiece and causing damage.

Dew heaters are low wattage 12 Volt DC electrical heater strips that wrap around the objective lens of the telescope (as well as the finderscope and eyepieces, if desired). These warm the optics above the dew point to prevent the formation of dew. Unlike dew shields, dew heaters don’t merely slow the formation of dew, they prevent its formation entirely.

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Digital Dew Heater strip for Telrad finder
 
Thousand Oaks - Digital Dew Heater strip for Telrad finder 
Our Product #:  DHT

Back-Ordered: Temporarily out of stock; will charge and ship when available.
This 2” x 2” dew heater strip fits the Telrad finder to keep the Telrad’s exposed slanted observing window and projection lens free of dew. It is held in place by rubber bands. It draws 0.25 amps at full power (power consumption at normal operating levels will generally be much less) . . .

[ More details . . . ] 
$25.00



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heater strap for 0.965' eyepieces and finderscope eyepieces
 
Astrozap - heater strap for 0.965" eyepieces and finderscope eyepieces 
Our Product #:  DHEP9AZ
Astrozap #: AZ 700

In Stock: Usually ships within one business day.
This 1.25” x 4.5” dew heater strip fits 0.965” eyepieces and finderscope eyepieces . . .

[ More details . . . ] 
$25.00



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heater for Telrad finders
 
Astrozap - heater for Telrad finders 
Our Product #:  DHTAZ
Astrozap #: AZ 721

Back-Ordered: Temporarily out of stock; will charge and ship when available.
This Astrozap dew heater fits the Telrad non-magnifying reflex finder . . .

[ More details . . . ] 
$28.00



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heater strap for 1.25' eyepieces and 50mm finders
 
Astrozap - heater strap for 1.25" eyepieces and 50mm finders 
Our Product #:  DHEP1AZ
Astrozap #: AZ 701

Back-Ordered: Temporarily out of stock; will charge and ship when available.
This 1.25” x 6.5” dew heater strip fits 1.25” eyepieces and 50mm finderscope objectives . . .

[ More details . . . ] 
$30.00



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heater for 1.83' to 2.14' m.a. Newtonian diagonal mirrors
 
Kendrick - heater for 1.83" to 2.14" m.a. Newtonian diagonal mirrors 
Our Product #:  KDS2
Kendrick #: 2016

In Stock: Usually ships within one business day.
This elliptical dew heater pad will keep dew from forming on a Newtonian diagonal mirror with a minor axis between 1.83” and 2.14” . . .

[ More details . . . ] 
$34.95
List Price: $37.00



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heater strap for 2' eyepieces and small scopes
 
Astrozap - heater strap for 2" eyepieces and small scopes 
Our Product #:  DHEP2AZ
Astrozap #: AZ 702

Back-Ordered: Temporarily out of stock; will charge and ship when available.
This 1.75” x 9” dew heater strip fits 2” eyepieces, 80mm finders, and small refractors and photoguide scopes . . .

[ More details . . . ] 
$35.00



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heater for Rigel Quickfinders
 
Kendrick - heater for Rigel Quickfinders 
Our Product #:  KDRQF
Kendrick #: 2022

In Stock: Usually ships within one business day.
This rectangular dew heater pad fits the Rigel QuikFinder non-magnifying reflex finder . . .

[ More details . . . ] 
$36.95
List Price: $39.00



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heater for Telrad finders
 
Kendrick - heater for Telrad finders 
Our Product #:  KDT
Kendrick #: 2003

Back-Ordered: Temporarily out of stock; will charge and ship when available.
This dew heater pad fits the Telrad non-magnifying reflex finder . . .

[ More details . . . ] 
$38.95
List Price: $39.00



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heater for 2.60' to 3.50' m.a. Newtonian secondaries
 
Kendrick - heater for 2.60" to 3.50" m.a. Newtonian secondaries 
Our Product #:  KDS3
Kendrick #: 2017

Back-Ordered: Temporarily out of stock; will charge and ship when available.
Product description coming soon....

[ More details . . . ] 
$38.95
List Price: $42.00



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Digital Dew Heater strip for 1.25' eyepieces and small finderscopes
 
Thousand Oaks - Digital Dew Heater strip for 1.25" eyepieces and small finderscopes 
Our Product #:  DHEP1
Thousand Oaks #: HB-4

This product is available used for $32.95 List Price: $39.00. Click here.

In Stock: Usually ships within one business day.
This 1” x 4” dew heater strip fits 1.25” eyepieces and most finderscopes up to 50mm aperture. The entire back of the heater strip is Velcro. There is a Velcro tab on an elastic strap on one end of the heater strip. When the Velcro tab on its strap is pressed onto the Velcro back of the heater, the elasticity of the strap holds the heater in place on eyepiece or finder . . .

[ More details . . . ] 
$39.00



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