Kendrick's FireFly heaters are designed for the astronomer who requires a dew prevention system that is both economical in price and power. Although unable to perform up to the high standards as our original Premier brand of heaters, astronomers and anyone else requiring heated optics for dew prevention can depend on our FireFly heaters to perform under all but the most demanding observing conditions. Note that if your observing site gets temperatures that approach freezing on the nights you like to observe, you should consider the Premier line of heaters.
Having lower power requirements than our Premier heater line, these heaters will extend the life of your battery between charges. Using a different heater technology but operating under the same principle as our Premier line of heaters, these heaters will mildly disperse heat without compromising the figure of your telescope or camera optics.
As well, because of our unique manufacturing process, the FireFly heaters will direct their heat into your optics instead of losing it into the atmosphere. We have had these heaters independently tested for heat transmission and the resulting images below clearly show the effectiveness of our build technology. These heaters are very effective in directing most of the heat into the optics which is important if dew is to be prevented.
The table below will help you to determine which FireFly Heater is the right one for you scope.
|.965"||for .965" eyepieces and finder scope eyepieces|
|1.25"||for 1.25" eyepieces|
|2"||For 2" eyepieces, 50 mm finder scope objectives, smaller camera lenses. Can also be used on 1.25" oculars but a bit big. To use on 1.25" oculars just slip heater off 2" eyepiece and hang over 1.25" eyepiece.|
|3"||will fit 3.5" to 5" OD (90mm to 130mm OD)|
|4"||will fit 5" to 5.5" OD (130mm to 145mm OD)|
|5"||will fit 5.5" to 6.5" OD (140mm to 165mm OD)|
|6"||will fit 6.5" to 8" OD (165mm to 200mm OD)|
|7/8"||For Meade 7" refractor, 7" Maksutov-Cassegrain, 8" SCT, Celestron C8, Astro Physics 7" Refractor. Will fit 8" to 9.5" OD (200mm to 250mm OD)|
|9/10"||For Celestron C9.25, Meade 10". Will fit 10" to 12.5" OD (250mm to 310mm OD)|
|11"||For Celestron C11. Will fit 12.5" to 13.5" OD (310mm to 340mm)|
|12"||For Meade 12 SCT. Will fit 13.5" to 15.5" OD (340mm to 400mm OD)|
|14/16"||For Celestron C14 & Meade 16" SCT. Will fit 15.5" to 18" OD (400mm to 460mm OD)|