2-in-1 multi-sensor for AstroLink

195.00  incl. Vat

This sensor works with AstroLink 4 PiAstroLink 4 USB, AstroLink 4 Bee, AstroLink 4 micro, and AstroLink 4 mini II devices only.

Description

Compact solution for complex environment monitoring. This sensor measures the following values:

  • temperature – must have for focus compensation
  • humidity – useful for dew cap heater control
  • dew point temperature
  • sky temperature/cloud coverage – very useful for controlling the sky transparency

Sky temperature seems to be an abstract value, but this is quite a good indicator of current conditions. Even under a dark sky far away from light pollution, when high clouds are present, the sky background meter may show very low values. However high clouds will affect astrophotography significantly. The sky temperature sensor will detect high clouds as well as any other clouds, fog, haze, and similar obstacles in the air.

Sky temperature is the measured value, but the informative value is the difference between the sky temperature and ambient temperature. If there is no difference it indicates 100% clouds or dense fog. If the sky temperature is 20-25 degrees lower than ambient, it means very few obstacles in the air, so the transparency should be good.

Technical data:

  • relative humidity accuracy: 2%
  • temperature accuracy: 0.3C
  • ambient temperature range:  -40C … +60C
  • sky temperature range:  -70C … +380C
  • sky temperature field of view: 30 degrees

Here you will find a 3-in-1 multi-sensor integrated also with a sky brightness sensor. 

Additional information

Weight 0.1 kg
Dimensions 10 × 4 × 4 cm
Cable length [m]

0.2, 0.3, 0.5, 0.8, 1.0, 1.5, 2.0, 3.0, spiral 0.3 / 2m, spiral 0.6 / 4m, spiral 1.0 / 7m

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