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SQM Reader Pro

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SQM Reader Pro Readings Map

The map below shows the latest readings contributed by SQM Reader Pro users. Each marker shows the latest magnitude per square arcsecond (MPSAS) value reported for a meter installation, rounded down. Blue markers indicate readings taken with the moon below the horizon. Yellow markers indicate readings taken with the moon at or above the horizon.

Click on a marker to see details of the reading.

Note that the map's location and zoom settings are saved in a cookie if your browser permits saving cookies.

Total Meter Installations: 167
Total Readings: 2002895

Latest Readings