Dew Heater

$35.75 ~~$55~~ In stock

Description

The dew heater is placed on the optical tube to prevent optics dewing. A very common problem especially in winter and in sealed optical tubes, such as refractors or Schmidt-Cassegrain. These dew heaters, 12V powered, heat the telescope preventing the formation of condensation on the optics.

Specifications

Size	SKU	Description
50mm Diameter Telescope	PLLFAS50	This dew heater for 50mm diameter telescopes can be easily installed thanks to Velcro which ensures a strong and uniform fixing. Thanks to elastic fix, it can be installed on tubes from 40mm to 60mm diameter. This dew heater is designed to be powered and controlled directly from the EAGLE but it can also be connected to any 12V external power source with RCA connector. Power consumption is 330mA.
60mm Diameter Telescope	PLLFAS60	This dew heater for 60mm diameter telescopes can be easily installed thanks to Velcro which ensures a strong and uniform fixing. Thanks to elastic fix, it can be installed on tubes from 50mm to 70mm diameter. This dew heater is designed to be powered and controlled directly from the EAGLE but it can also be connected to any 12V external power source with RCA connector. Power consumption is 500mA.
80mm Diameter Telescope	PLLFAS80	This dew heater for 80mm diameter telescopes can be easily installed thanks to Velcro which ensures a strong and uniform fixing. Thanks to elastic fix, it can be installed on tubes from 70mm to 90mm diameter. This dew heater is designed to be powered and controlled directly from the EAGLE but it can also be connected to any 12V external power source with RCA connector. Power consumption is 670mA.
100mm Diameter Telescope	PLLFAS100	This dew heater for 100mm diameter telescopes can be easily installed thanks to Velcro which ensures a strong and uniform fixing. Thanks to elastic fix, it can be installed on tubes from 100mm to 120mm diameter. This dew heater is designed to be powered and controlled directly from the EAGLE but it can also be connected to any 12V external power source with RCA connector. Power consumption is 500mA.
120mm Diameter Telescope	PLLFAS120	This dew heater for 120mm diameter telescopes can be easily installed thanks to Velcro which ensures a strong and uniform fixing. Thanks to elastic fix, it can be installed on tubes from 120mm to 130mm diameter. This dew heater is designed to be powered and controlled directly from the EAGLE but it can also be connected to any 12V external power source with RCA connector. Power consumption is 480mA.
150mm Diameter Telescope	PLLFAS150	This dew heater for 150mm diameter telescopes can be easily installed thanks to Velcro which ensures a strong and uniform fixing. Thanks to elastic fix, it can be installed on tubes from 140mm to 160mm diameter. This dew heater is designed to be powered and controlled directly from the EAGLE but it can also be connected to any 12V external power source with RCA connector. Power consumption is 1000mA.
180mm Diameter Telescope	PLLFAS180	This dew heater for 180mm diameter telescopes can be easily installed thanks to Velcro which ensures a strong and uniform fixing. Thanks to elastic fix, it can be installed on tubes from 160mm to 200mm diameter. This dew heater is designed to be powered and controlled directly from the EAGLE but it can also be connected to any 12V external power source with RCA connector. Power consumption is 1170mA.
200mm Diameter Telescope	PLLFAS200	This dew heater for 200mm diameter telescopes can be easily installed thanks to Velcro which ensures a strong and uniform fixing. Thanks to elastic fix, it can be installed on tubes from 180mm to 200mm diameter. This dew heater is designed to be powered and controlled directly from the EAGLE but it can also be connected to any 12V external power source with RCA connector. Power consumption is 810mA.
250mm Diameter Telescope	PLLFAS250	This dew heater for 250mm diameter telescopes can be easily installed thanks to Velcro which ensures a strong and uniform fixing. Thanks to elastic fix, it can be installed on tubes from 250mm to 300mm diameter. This dew heater is designed to be powered and controlled directly from the EAGLE but it can also be connected to any 12V external power source with RCA connector. Power consumption is 630mA.
280mm Diameter Telescope	PLLFAS280	This dew heater for 280mm diameter telescopes can be easily installed thanks to Velcro which ensures a strong and uniform fixing. Thanks to elastic fix, it can be installed on tubes from 250mm to 300mm diameter. This dew heater is designed to be powered and controlled directly from the EAGLE but it can also be connected to any 12V external power source with RCA connector. Power consumption is 630mA.
300mm Diameter Telescope	PLLFAS300	This dew heater for 300mm diameter telescopes can be easily installed thanks to Velcro which ensures a strong and uniform fixing. Thanks to elastic fix, it can be installed on tubes from 300mm to 350mm diameter. This dew heater is designed to be powered and controlled directly from the EAGLE but it can also be connected to any 12V external power source with RCA connector. Power consumption is 610mA.
350mm Diameter Telescope	PLLFAS350	This dew heater for 180mm diameter telescopes can be easily installed thanks to Velcro which ensures a strong and uniform fixing. Thanks to elastic fix, it can be installed on tubes from 350mm to 360mm diameter. This dew heater is designed to be powered and controlled directly from the EAGLE but it can also be connected to any 12V external power source with RCA connector. Power consumption is 180mA.
450mm Diameter Telescope	PLLFAS450	This dew heater for 450mm diameter telescopes can be easily installed thanks to Velcro which ensures a strong and uniform fixing. Thanks to elastic fix, it can be installed on tubes from 450mm to 460mm diameter. This dew heater is designed to be powered and controlled directly from the EAGLE but it can also be connected to any 12V external power source with RCA connector. Power consumption is 2400mA.

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.6 / 5 · 5 reviews)

Henry R. ★★★★★ Oct 20, 2026

I’ve been using this on my SCT during these cold nights, and not a single spot of frost formed on the corrector plate. The gentle heat it provides is just enough to keep optics clear without wasting power or overheating the tube.

Adam ★★★★★ Oct 19, 2026

Set it up on my refractor last night and the lens stayed crystal clear even with heavy frost forming on the tube. The gentle heat it puts out is just enough to do the job without wasting power.

William P. ★★★★★ Oct 18, 2026

Finally, no more scrambling to wipe down my Schmidt-Cassegrain every ten minutes during damp nights. The gentle, even heat covers the entire optical tube just right, and it's been running silently for hours without any issue.