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Light Pollution Plugin for Google Earth

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8 replies to this topic

#1 krp

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Posted 23 February 2013 - 10:25 PM

Awhile ago I downloaded a plugin for Google Earth that shows the light pollution for North America. But it uses the old light pollution data (from 1997). Does anyone know where I can find the newer (2001) light pollution plugin for Google Earth? I know I can download PNG's here: Light Pollution Maps but I can't use them in Google Earth unless I have the exact coordinates to match the edges. There is a big difference between the two maps especially in the midwest.
Kevin

#2 Dark Sky Scott

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Posted 25 February 2013 - 06:02 PM

krp, I haven't found one for sky glow, but here's one for city lights imaged from space with data from last year:

http://earthobservat...ew.php?id=79803

#3 Rich V.

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Posted 25 February 2013 - 06:08 PM

This appears to be the newer data:

https://productforum...ogle-earth-o...

Rich

#4 audioaficionado

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Posted 03 April 2013 - 01:33 AM

This appears to be the newer data:

https://productforum...ogle-earth-o...

Rich

Awesome! This is much more useful than just the .jpg or having to go to the published Google map site. :thanx:

#5 REC

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Posted 03 April 2013 - 09:45 AM

Interesting, I'm living right on the edge of a red zone facing orange! Have to take a ride west to a nearby green zone one night.

#6 vsteblina

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Posted 03 April 2013 - 11:08 AM

Interesting....it appears that the date of the imagery was winter. The ski areas on the Cascade crest show up.

Wow, I remember a wildlife biologist complaining about the light pollution and impact on wildlife when I was working.

It does look that bad on the ground!!!

Otherwise, some areas that I am familar with appear to UNDERESTIMATE the extent of light pollution.

Thanks for the posting.

#7 krp

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Posted 05 April 2013 - 08:10 PM

Are there any plans to create an even more updated light pollution map? 2001 was a long time ago. I know some areas, such as North Dakota have changed a lot.

#8 Phillip Creed

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Posted 23 April 2013 - 10:03 PM

For the new light pollution maps w/2001 data, I've taken a bit more interest in the expanded color map, which breaks each of the color zones in half:

https://sites.google...n/more/images-1

Since each zone is a factor of 3 in sky brightness, breaking each zone in half amounts to ~1.7x factor in sky brightness. This is a *great* tool for site scouting when you're looking to squeeze out every last bit of darkness for your 1/2-hr / 1-hr / 2-hr drive to an observing site.

This map has been around for a few years, but the one thing I can't find is a Google Maps overlay of the expanded color scheme. Anyone know of such a beast?

Clear Skies,
Phil

#9 Daniel8802

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Posted 03 October 2013 - 02:54 PM

Does the milkyway cast a shadow at cherry springs?


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