in stock
in stock

Sky quality meter to measure night sky brightness

instead 121,55 EUR
only 110,34 EUR
excl. VAT
excl. 4,65 € Shipping costs


Unihedron Sky Quality Meter SQM

Sky Quality Meter - Measurement of the night sky brightness

A particular innovative product for the stargazer - within seconds you can determine the sky brightness using this cigarette-box sized instrument. No "faintest star" estimates any more, no influence of daily condition or vision impairment by the observer.

A high sensitive sensor measures the integrated sky brightness around a solid angle of 42° (FWHM) around the central axis of the instrument. The value will be displayed in magnitudes per square arcseconds.

Possible applications are for example the unbiased comparision between different sites, the assessment if it is worthwhile to photograph a particular object tonight, the documentation of progressing light pollution and much more.

The sensitivity bandwith of the detector covers the visual range. The measurement itself starts after pressing the trigger button and the maximum time needed is about 8 seconds. The current temperature is displayed as well to cover up slight drifts of different measurements caused by temperature.

Size: 9,5 x 6 x 4 cm, weight: 105 grams. Incl. 9V block battery.

Alternatively, the SQM is also available in the following versions:
SQM-L with lens for distinctive measurements in a 20° segment
SQM-LU with lens and USB connection for network functionality
SQM-LE with lens and Ethernet connection for network fuctionality

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