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Back in february, my local council started to replace the old sodium
streetlights with white-light, full-cut-off lights They finished the work on the three lamp-posts in my little street last week Tonight was my first clear night since then, so I took the opportunity to fill out the light pollution survey[1] and also to re-measure the *actual* limiting magnitude using my Sky Quality Meter. My normal VLM measurement in the Na days was 19.38 and I'm pleased to say that this has now improved to 19.51 magnitudes per square arc- second. While this improvement is completely imperceptible to a human observer, it's good to know it's going in the right direction. My eyeballed results for the l/p survey came out at mag. 4 [1] http://www.windows.ucar.edu/citizen_...unt/index.html |
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Thread | Thread Starter | Forum | Replies | Last Post |
The very first presidential effort to ever address Light Pollution: AlGore.org Statement on Light Pollution | Ed[_2_] | Amateur Astronomy | 20 | April 25th 07 12:30 PM |
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Light Pollution and Mak vs SCT | Jerry | Amateur Astronomy | 1 | September 2nd 03 06:42 PM |
Light Pollution | Philip | Amateur Astronomy | 19 | August 11th 03 10:48 PM |