Unihedron Sky Quality Meter with Lens - Narrow Field of View - SQM-L Expl Between viewing sessions

Between viewing sessions

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

to halt the intrusion of fine particulates and fungus

25" eyepiece holder (also called visual back) that can be attached to (screwed onto) a male M48 thread

Unihedron Sky Quality Meter with Lens - Narrow Field of View - SQM-L Expl Between viewing sessionsUnihedron 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