Asterion Cooler CAT

nozzle for ventilation of the catadioptric tube


  • Fitting adapter: 1.25"/2"
  • Tube diameter: 25mm
  • Minimum inner diameter of the main mirror hood (carrot): 27mm
  • Power supply: 12V DC (5.2x2.1mm "+" connector in the center)
  • Weight: 0.41kg
  • Cooler nozzle Cooler CAT
  • Hexagonal wrench
  • User's Manual
  • Packaging
The Asterion Cooler Cat cooling attachment will significantly speed up the thermal stabilization of Schmidt-Cassegrain mirror-lens telescopes. The closed tube of such telescopes is not very conducive to rapid heat transfer and owners of large telescopes often have to wait up to several hours for the optics to cool down. This time is lost
for serious observations, because the telescope even with first-class optics gives distorted images due to heat fluxes inside the tube.

The Cooler Cat is equipped with a fan that collects and focuses the airflow. Through a long tube, the air enters the interior of the telescope and blows over the optical surfaces. This accelerates the heat exchange and reduces the cooling time of the optics several times.
The device is equipped with a filter to prevent dust from entering the telescope while the fan is running. Warm air exits the tube through special holes in the landing adapter.

Cooler Cat has an ingenious design of a sliding fit adapter that allows the unit to be used with all models of SC telescopes from 8'' to 16'' in diameter. Before first use, you only need to adjust the position of the adapter on the tube to the tube size of your telescope. The adapter then locks into place and maintains its position.
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