Cloud Break Optics

Sky-Quality Meter (SQM-L)

Sky-Quality Meter (SQM-L) - Main image
$136.83 $198.3 In stock

Category: Observing Aids

Description

The "Sky Quality Meter" measures the brightness of the night's sky giving readings of magnitudes per square arcsecond. It offers unprecedented sensitivity in a handheld meter. 

Specifications

  • The Full Width Half Maximum (FWHM) is ~20°. 
  • Run on Included 9V battery.
  • Size 3.6 x 2.6 x 1.1 in. (92 x 67 x 28mm)
  • Weight 0.31 lb (0.14 kg)
  • Maximum light sampling time: 80 seconds.
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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (5.0 / 5 · 5 reviews)

Ryan J. ★★★★★

I was shocked how easily it picked up the subtle glow from a nearby town that I never noticed before. The readings in magnitudes per square arcsecond make light pollution comparisons so simple. Definitely a must-have for anyone serious about dark sky hunting.

Alexander ★★★★★

Took this out to a Bortle 3 site and the readings were spot on, down to the tenth of a magnitude. The sensitivity is impressive for something that fits in my palm.

Hazel X. ★★★★★

Finally got to test it under a truly dark sky and the readings are incredibly consistent, even picking up subtle differences between moonlit and moonless nights. The sensitivity is way better than my old phone app.

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