Star Party Sites with Light Pollution Gradients, Counties, Zip Codes &
the pixilated blue red & yellow areas are the light polluted areas
around cities . Denver is at the bottom
the middle, Laramie at it's left. The star party sites are labeled, look
for a RED "x" . Interstates are black, State roads are brown. Counties
are outlined and labeled, while subtile greys represent zip code areas.
of the light pollution pixels is approximately 2.5 miles/pixel. And,
as per the request of one of my star
roads are labeled , but only at the 'multi-county' level in order to reduce
clutter. The same holds true for rivers & streams. In ArcGIS,
Latitude, longitude and zenithal limiting magnitude can be seen for each
S.P. site, by using the Information Tool . Elevations were not available
in the database I used, but should be added in the future to improve the
accuracy of predicted Z.L.M. when using Walker's Law. In nonoLamberts &
'r' in meters , I = 11300000 x population x r^-2.5. Steve Albers
on Light Pollution, Observing
site data, Astronomical
would seem be a good tool for a lighting engineer to examine excessive
light polluted areas, with an eye to locating astronomical observatories.
More in that vein later.
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