Sky Quality Measurements

Sky Quality Measurements in Magnitudes per Square Arc Second.

Home Site

5/21/2015:  20.51

7/18/2015: Started 20.2, max 20.5, 20.4 average

12/5/2015: 20.4

9/20/2016: 20.60

10/28/2016: 20.58

10/29/2016: 20.22

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Norris Lake Star Party

1/30/2016:  Started at 20.61, max value of 20.90

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Pickett State Park IDA Site

1/9/2016:  Started 21.20, max value of 21.38

4/2/2016: Started 21.20, max of 21.56, average value 21.48

8/30/2019:  Max of 21.77; significant period in the 21.7+ range.

3/26/2022:  21.3

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Cherohala Skyway

12/5/2015:  Started 21.1, max value 21.2

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Fall Creek Falls

5/6/2016:  21.32

5/7/2016: 21.40

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Cherry Springs State Park

9/2/2016:  Low of 21.2 to high of 21.5 over several days.  Hazy conditions.

6/15/2018 – 6/18/2018:  Beautiful clear spell.  Peak values over 21.9; 22.0+ observed.  Sky was VERY dark.

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Look Rock South

9/24/2016: 21.48 max value, ranged 21.3-21.4 typically at zenith.  North significantly brighter.

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Calhoun County Park – Dark Sky Site

10/5/2018 through 10/7/2018:  21.6 average; foggy / hazy conditions.

10/23/2022:  21.2 Good conditions.  35-40F (New Narrow SQM Meter)

9/11/2024:  21.00 Clear but a little smoky.  (New Narrow SQM Meter)