Celestron Thermistor for Smart DewHeater Controllers - 94037 Mirror Diagonals 77x Reducer/Flattener for their Esprit

77x Reducer/Flattener for their Esprit 120 ED Triplet Refractor telescope Reduction: 0

1 arcsecond Tracking Automatic Tracking Rate celestial

20 mm Focal Length

you won''t get 2X magnification in both set-ups

Field Stop (mm): 27

Celestron Thermistor for Smart DewHeater Controllers - 94037 Mirror Diagonals 77x Reducer/Flattener for their EspritThe Celestron Thermistor is an accessory for the Smart DewHeater Controller (sold separately). It works in conjunction with a third party dew heating strip and allows the Celestron Smart DewHeater controller to deliver the right amount of warmth to your telescope's corrector to prevent dew while still preserving battery power. Please note that you do NOT need this thermistor if you are using a Celestron Dew Heater Ring. The dew heater ring already