DewBuster™ Temperature Sensors
The DewBuster™ Controller has 2 types of heater outputs: Medium Power and Temperature Controlled.
The Medium Power outputs do not use a temperature sensor, instead they apply extra heat to ensure the optic remains warmer than the air. They are used on items that do not affect telescope performance so there is little benefit to adding additional wiring and temperature sensors. Typical items for Medium Power are the eyepiece, Telrad, finderscope, star diagonal, etc.
The Temperature Controlled outputs use a Temperature Sensor and apply only enough heat to warm the optic slightly above the air temperature. Each Temperature Sensor measures both Air Temperature and Scope Temperature.They are used where excess heat affects telescope performance especially at high magnifications. Typical items for Temperature Control are the Objective Lens, Corrector Plate, and Secondary Mirror. There are 2 Temperature Sensor inputs, one for the Right Temperature Controlled output and one for the Left Temperature Controlled output.
Three types of Temperature Sensors are available:
The Medium Power outputs do not use a temperature sensor, instead they apply extra heat to ensure the optic remains warmer than the air. They are used on items that do not affect telescope performance so there is little benefit to adding additional wiring and temperature sensors. Typical items for Medium Power are the eyepiece, Telrad, finderscope, star diagonal, etc.
The Temperature Controlled outputs use a Temperature Sensor and apply only enough heat to warm the optic slightly above the air temperature. Each Temperature Sensor measures both Air Temperature and Scope Temperature.They are used where excess heat affects telescope performance especially at high magnifications. Typical items for Temperature Control are the Objective Lens, Corrector Plate, and Secondary Mirror. There are 2 Temperature Sensor inputs, one for the Right Temperature Controlled output and one for the Left Temperature Controlled output.
Three types of Temperature Sensors are available:
STANDARD SCT / REFRACTOR TELESCOPE SENSOR
The Standard SCT/Refractor Temperature Sensor is the most popular and easiest to install. It conveniently clips underneath the heater strip which keeps the Scope Sensor in contact with the telescope tube and can easily be transferred from one telescope to another. The Air Sensor is located at the tip and can be bent slightly upward so it does not touch any part of the telescope and can accurately measure the air temperature. This sensor may be ordered with your DewBuster™ Controller or from the ACCESSORIES ORDER FORM.
NEWTONIAN TELESCOPE SENSOR
The Newtonian Temperature Sensor has the Scope Sensor at its tip which makes it easier to place against the Secondary Mirror so it can control a heater. It has a very thin wire which can be routed along the spider vane and the Air Sensor can be placed near the tube wall so that the larger diameter gray wire is not in the optical path. When ordering, you specify the distance between the Scope Sensor and Air Sensor to best fit your telescope. See the Newtonian Sensor Owner's Manual for more information. The gray cable is normally 6 feet long, but you may specify a short length when ordering. This sensor may be ordered with your DewBuster™ Controller or from the ACCESSORIES ORDER FORM.
New! RING HEATER TEMPERATURE SENSOR New!
A Special Temperature Sensor is available for use with the Celestron Ring Heater. It has a Quick-Disconnect so that the gray cable to the DewBuster™ Controller can be removed when installing the dust cover. This sensor may be ordered with your DewBuster™ Controller or from the Accessories Order Form.
The Celestron Thermistor is not compatible with the DewBuster™ Controller but there is plenty of room beside it to mount the DewBuster™ Ring Heater Temperature Sensor as shown below.
The Scope Sensor has an extremely small diameter wire which passes through the same grommet as the Celestron Thermistor cable and is then inserted under the Kapton Tape and on top of the Celestron Foam Pad as shown above. The Foam Pad insulates the sensor from the heater while gently pressing the sensor against the Corrector Plate and the Kapton Tape protects the glass from scratches.
The DewBuster™ Sensor wire routes along the Celestron Heater cable as shown above and is taped to the Celestron Thermistor cable as shown below to prevent it from accidentally being pulled out of place.
