Lynx Astro 30cm Dew Heater Strap for 3'' Telescopes
Lynx Astro 30cm Dew Heater Strap for 3'' TelescopesLynx Astro 30cm Dew Heater Strap for 3'' TelescopesLynx Astro 30cm Dew Heater Strap for 3'' TelescopesLynx Astro 30cm Dew Heater Strap for 3'' Telescopes

Lynx Astro 30cm Dew Heater Strap for 3" Telescopes

  (10 Reviews)
✓ 2 year warranty


14x in stock shipped 1-2 working days

About this product

Model:  lynxastro_dew_strap_30cm
Part Number:  lynxastro_dew_strap_30cm

Lynx Astro premium quality dew heater straps, made in the UK. 

Robust design using modern materials for high performance and long life!

Simply wrap one around the telescope tube near the optics and secure it there with its integrated Velcro/elastic strap. A gentle heat is then transferred to the optics until the temperature is slightly warmer than the dew point. 

This heater strap is 30cm long, please check the circumference of your telescope first to ensure this will provide a good fit. 

Will I need a Dew Controller? 

A simple 12V Dew Heater Supply Cable can be used to connect the tape to a suitable 12V power-supply. When connected this way, the tape is essentially running on full power. This won't harm the tape, but with smaller telescope apertures, it might result in the optic being warmer than necessary, which can affect the view and waste energy. The solution then is to use a Dew Controller that regulates the heat (also enables you to use more than one heater tape). 


  • Suitable for use with 3" telescopes (30cm long). 
  • Modern heating element provides even heat distribution and low power consumption.
  • Produces 6W of heating power.
  • Requires approximately 0.5Ah at 12v / full power.
  • Outer thermal insulating layer prevents heat loss.
  • 2m silicone cable remains flexible even at low temperatures.
  • RCA / Phono Plug with moulded strain-relief - works with most dew controllers.
  • Velcro/elastic strap ensures a snug fit.
  • Smooth inner fabric protects the telescope's finish (doesn't scratch or mar the surface).
  • 12v power supply required.
  • Two year no fault replacement warranty.

Customer reviews

Average Rating (10 Reviews):  
Write a Review and share your opinions!

Rating (max 5):  
Excellent dew heater
19 May 2023  | 

Good quality and reliable dew heater.

Rating (max 5):  
Works well
28 November 2022  | 

My first dew strap! Plus into my ASIAIR Plus with rca lead. Worked a treat during a few hours of 4įc clear skies. Didnít mark the scope and the silicone lead feels like it will last.

Rating (max 5):  
Useful product
24 November 2022  | 

I have no problems with this unit and am hopeful that it will stave off the dew problem efficiently. Great advice and service from FLO, as always.

Rating (max 5):  
Newer design works better
18 November 2022  | 

Needed a new heating band. FLO were, as usual, flawless. The Lynx dew heater strap has had a small but significant design change. The power lead into tge heating element has been moved to tge side of tge end making for a much better and more secure fitting.

Rating (max 5):  
Great product
13 July 2022  | 

Great service from FLO
Does the trick as expected

Rating (max 5):  
Lynx Astro 30cm Dew Heater Strap for Baader Planetarium 61mm diameter Vario-Finder guider telescope.
11 May 2022  | 

The Lynx Astro 30cm Dew Heater Strap is a good length to wrap around this 61 mm diameter aperture guider telescope.
The Velcro strap provides good thermal contact to the telescope barrel.
Warm up time < 30 minutes approximately using 12V Lynx Astro Dew Controller Power Supply at 100% setting.
Excellent two day delivery from Flo.

Rating (max 5):  
18 January 2022  | 

Need these to combat due forming on optics. in cold spells These can be regulated to the right power output so as to protect focus. Easy to set up. FLO absolutely spot on again.

Rating (max 5):  
lynx astro dew heater strap
28 April 2021  | 

tested and works great..made in uk too!

Rating (max 5):  
Nice Quality Band
05 January 2021  | 

Fits nicely to a William Optics ZS61 - as with other Lynx Astro product they're good quality and I'm pleased I bought them

Rating (max 5):  
Dew heaters
27 October 2020  | 

Works great, keeps your lens clear, could be improved by using neoprene and other robust and insulating materials but so far so good !


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