[AZ-Observing] Re: Daily Star Story About Tucson Sky Brightness Change in Past 20 Years
- From: "Spencer, Darrell" <DSpencer@xxxxxxx>
- To: <az-observing@xxxxxxxxxxxxx>
- Date: Thu, 16 Sep 2010 15:24:41 -0700
Well, if the 6% number is close, then in another ten years, even in
Arizona, we'll have to convince ourselves that Bortle "Blue" or even
"Green/Yellow" skies are workable.
Sort of like almost anywhere east of the Mississippi.
At least they're still able to do hard science on Kitt Peak.
Darrell Spencer
-----Original Message-----
From: az-observing-bounce@xxxxxxxxxxxxx
[mailto:az-observing-bounce@xxxxxxxxxxxxx] On Behalf Of Dan Heim
Sent: Thursday, September 16, 2010 1:54 PM
To: az-observing@xxxxxxxxxxxxx
Subject: [AZ-Observing] Re: Daily Star Story About Tucson Sky Brightness
Change in Past 20 Years
Yeah, but consider that, on average, light pollution is increasing at a
rate of 6% annually. Population is increasing at 1/4 that rate. Go
figure.
Dan
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