Google Maps meets Light Pollution
Posted 25 August 2008 - 04:45 PM
Posted 21 October 2008 - 12:08 PM
I know the feeling. I'm up in Gaithersburg. I took my son out camping over in Haymarket & he asked "What's that white thing up there dad?" I said "That's the Milky Way son. You can't see it at home because of the street lights." He said "Oh, that sucks. It's pretty cool looking."
I found a place out in WV Spruce Knob Nat'l Park that has camping and is DARK. I think he & I will go there so he can really see some stars, get his wilderness camping badge, & Astronomy pin. Typically we only get mag 4-5 on a good moonless night.
Posted 30 October 2008 - 11:30 AM
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Posted 06 January 2009 - 10:31 PM
Last year I wrote a web application that uses the Google Maps API & a map of North American light pollution from the Dark Sky Association to provide a guide to potential dark observing sites in the US.
Thanks very much for an excellent site!
Posted 03 June 2009 - 09:29 PM
Posted 29 June 2009 - 12:57 PM
Btw great job on the program!
Posted 28 October 2009 - 12:04 PM
Posted 30 October 2009 - 12:50 PM
Posted 01 November 2009 - 03:10 AM
Note also the Alberta oilfield LP in Canada :o
Posted 09 November 2009 - 01:28 PM
Posted 09 November 2009 - 03:00 PM
You are correct...the vertical line east/west line is very significant. There is no geographical reason for this.
It coincides roughly with 100 degrees west, and it's the line between areas where crops can be grown without irrigation and areas that are traditionally rangeland -- or completely unused. A matter of precipitation.
A population map of the world today correlates extremely well with the fertility of the soil and the abundance of rainfall. A few areas (like parts of Arizona and Nevada) have been settled heavily in the post-agricultural era, but those are the exception, not the rule.
Posted 24 December 2009 - 11:33 AM
Great work Jon, I found your app. a while ago and added 6 sites myself. Albers had compiled a list of about 400 dark sky sites with Lat/Long. Several years ago, using ArcMap9.2 I converted the list to a .dbf and overlaid it on a georeferenced layer of Cinzano's light pollution zones in the US. Currently with the NPS, I am producing In-Situ Light Pollution Hemispheres from data taken by the Night Sky Monitoring Team. We are in the process of re-processing the data, so that it will also show JUST the light pollution, from most of the National Parks in the US (~300).
It would seem to be a very good idea to link all this great data on LP, to help reinforce our case and implement solutions. A web-ring of sorts? Dark Skies!! Shield and point those lights down.
Several of these preliminary hemisphere models have been post on the in-Situ LP Hemisphere thread.
Posted 17 January 2010 - 12:15 AM
Posted 28 February 2010 - 04:31 AM
after seeing the eastern seaboard on that map WOW.
Posted 02 March 2010 - 11:56 AM
I just added the Ft. Union site on the Dark Sky Finder. We found it a Bortle Class 2 site, small light dome from closest city
and flat horizon. Albuquerque's light dome is at 240*.
Check out: http://www.jshine.ne...7382812&zoom=11
Posted 02 March 2010 - 04:05 PM
Posted 02 March 2010 - 05:23 PM
position it properly to suit and do a screen grab. Print that.
Posted 10 March 2010 - 01:35 PM
I just uploaded a new Ft. Collins hemisphere to Google Earth Community.
This one lists only the Net Light Pollution. As bad as it looks, it's not a bad location,
considering how close it is to town.
Posted 21 October 2012 - 07:01 PM
But, no comments here in a couple years.
Wondering if there any updates to that map.
(Unfortunately, I'm in the Bortle red zone -- Las Vegas (Summerlin), NV. And, if I wanted to build a small observatory an hour away, I would worry about police protection and vandalism)