Unihedron Sky Quality Meter with Lens - Narrow Field of View - SQM-L Expl Unfortunately all it takes is

Unfortunately all it takes is a about a second of the bright white light from a flashlight or a cell phone display to deplete your night vision and have you waiting around to adapt again

The "Sky Quality Meter" measures the brightness of the night sky in magnitudes per square arcsecond

The Explore Scientific 8x50 produces a wide 6° field of view and allows precision focus of both main objective and eyepiece illuminated reticle

This sturdy

Please note: this is the OEM version of the Orion Astrophography Flip Mirror - that is

Unihedron Sky Quality Meter with Lens - Narrow Field of View - SQM-L Expl Unfortunately all it takes isUnihedron Sky Quality Meter with Lens Narrow Field of View SQM L We are an Australian authorised distributor of Unihedron products. An affordable meter for measuring sky brightness for astronomers! The "Sky Quality Meter" measures the brightness of the night sky in magnitudes per square arcsecond. Designed by Dr. Doug Welch and Anthony Tekatch, the Unihedron Sky Quality Meter offers unprecedented sensitivity in a handheld meter. Uses: Find out how