GNTO Sky Quality Meter (SQM-E)

SQM-E Meter is now runing at GNTO!

SQM (Magnitude per arc second squared), Naked Eye Limited Magmitude (NELM),
Bortle scale, and "what's visible" comparisons are available on a number of web sites:
Wikipedia Limiting Magnitude
Comparison of Bortle, NELM ,& SQM
Chart comparing the various measurement scales, a Night Sky Brightness Comparison Nonogram

SQM-E by Unihedron

SQM Reader Pro 3 by Knightware

Please contact    gnto at taas dot org    for questions or comments

Page last edited: 23-March, 2020 at 16:50