Unihedron Sky Quality Meter with Lens - Narrow Field of View SQM-L by Unihedron at Daily News Detroit. MPN: 8542039385. Hurry! Limited time offer. Offer valid only while supplies last. An affordable meter for measuring sky brightness for astronomers! The ''Sky Quality Meter'' measures the brightness of the night sky in magnitudes per square arc second and offers unprecedented sensitivity in a handheld meter. Uses: - Find out how good the night or site REALLY is. - Compare the sky brightness at different sites quantitatively. - Document the evolution of light pollution in your area. - Set planetarium dome illumination to mimic the skies people are likely to experience elsewhere
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sku: EXTECHEX330-NIST, mpn: EX330-NIST, ean: 0793950393314,
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sku: 890C, mpn: 890C, ean: 0817050089035,