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General Astronomy >> Light Pollution

Pages: 1
frédogoto
member


Reged: 12/18/05

Loc: France
European light pollution map new
      #5604174 - 01/04/13 07:21 AM

I all..
i've juste done new light pollution map of europae
you can dl it for google Earth


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JakeSaloranta
Pooh-Bah


Reged: 09/18/08

Loc: Finlandia
Re: European light pollution map new [Re: frédogoto]
      #5604182 - 01/04/13 07:28 AM

Nice one! But this probably should be "Central-European light pollution map" since you're missing half of Norway-Finland-Sweden for a start, not to mention Turkey, Russia, Iceland and Greece - at least in the preview images

/Jake


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Tony Flanders
Postmaster
*****

Reged: 05/18/06

Loc: Cambridge, MA, USA
Re: European light pollution map new [Re: frédogoto]
      #5604272 - 01/04/13 08:51 AM

For people who don't want to probe deeply into your website, it would be helpful if you summarized your data sources.

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johndgaul
member


Reged: 05/19/11

Re: European light pollution map new [Re: Tony Flanders]
      #5606164 - 01/05/13 09:15 AM

That's fantastic, Frédéric! I've been looking for something like this for a long time. Thank you for sharing.

It would be great if you could write a brief explanation of how you did it.

Best regards,

John


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frédogoto
member


Reged: 12/18/05

Loc: France
Re: European light pollution map new [Re: johndgaul]
      #5607751 - 01/06/13 03:55 AM

hi all.
Jake, In theory these countries are included in my cards
(North scandinavia).
but one of my data source does not allow me to go higher latitude : this is altimetry from SRTM shuttle mission
I have the choice : make them ( these place are very depopulated and always under the clouds;)) but with wrong result ( altimetry is one of many parameter that influences the propagation of light polution )
or not include and greatly accelerate my work ( swap of photoshop : 321 Go 0.o !!!! )
you can see my work and evolution here : this is in french but you can use google translating
Greece and russia : i havent find base data for theses contry (base data : Corine data land cover)
Turkey : only 2% of these contry is in europa, 98% of these great contry is in Asia Minor
Tony flander :i use Corinne data land cover and SRTM altimetry
corine : http://www.eea.europa.eu/data-and-maps/data/corine-land-cover-2006-raster-2

Johndgaul : you are right. i'll will dit it. but my english is very bad a i must find a "victim" for this work

Edited by frédogoto (01/09/13 03:16 AM)


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SteveTheSwede
member


Reged: 09/28/09

Loc: Stockholm, Sweden
Re: European light pollution map new [Re: frédogoto]
      #5610788 - 01/07/13 07:34 PM

And here I am, sitting smack bang in the middle of the worst hotspot in Scandinavia

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RolandosCY
super member


Reged: 01/02/09

Loc: Nicosia, Cyprus
Re: European light pollution map new [Re: SteveTheSwede]
      #5611339 - 01/08/13 03:00 AM

Frederic, I know we are a tiny place,any info on the distribution of light pollution on our little island Cyprus?

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frédogoto
member


Reged: 12/18/05

Loc: France
Re: European light pollution map new [Re: RolandosCY]
      #5613118 - 01/09/13 03:50 AM

Cyprus : juste go in middle of Paphos forest..
i've just donne cyprus for you but i have no data about altymetry.... and the map is not geo referenced


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RolandosCY
super member


Reged: 01/02/09

Loc: Nicosia, Cyprus
Re: European light pollution map new [Re: frédogoto]
      #5614834 - 01/10/13 02:11 AM

Quote:

Cyprus : juste go in middle of Paphos forest..
i've just donne cyprus for you but i have no data about altymetry.... and the map is not geo referenced





Hi Frederic! Merci! It looks more or less as expected! Appreciate it!


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Live_Steam_Mad
sage


Reged: 07/24/07

Loc: Moss Bank, St.Helens, England
Re: European light pollution map new [Re: RolandosCY]
      #5632524 - 01/20/13 12:55 AM

Absolutely excellent in every respect! Now I finally understand why my Southern sky is terrible from Hillbrae Avenue, Moss Bank, St.Helens, England, whereas my friend Jon H. with the 8" LX90 at Newton Road, Billinge, St.Helens, only about a mile or 2 away has a noticeably darker southern sky! Since Google Earth / Galleries / Nasa / Earth City Lights didn't show hardly any difference between us, but your "classic" map certainly does!

Thanks a lot, it is greatly appreciated , believe me.

Cheers,

Alistair G.

Edited by Live_Steam_Mad (01/20/13 12:56 AM)


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gmartin02
scholastic sledgehammer
*****

Reged: 04/11/05

Loc: Santa Clarita, CA
Re: European light pollution map [Re: JakeSaloranta]
      #5635655 - 01/21/13 08:20 PM

Quote:

Nice one! But this probably should be "Central-European light pollution map" since you're missing half of Norway-Finland-Sweden for a start, not to mention Turkey, Russia, Iceland and Greece - at least in the preview images

/Jake




FYI - I took all of the source lp maps from http://www.lightpollution.it/dmsp/ and made Google earth overlays of all of the maps. For most of the larger maps (like Asia), I broke the maps into multiple overlays so they will load faster in Google Earth.

Here is a link to my page with all of the Google Earth lp overlays I made:

http://home.earthlink.net/~gmartin02/astronomy/googleearthnightskyoverlays.htm

The overlay labeled "Western Asia (Including Russia and Turkey)" contains the stuff in Eastern Europe.

Note: There is a bug in Google Earth 6.1x & 6.2x that may prevent these overlays (or any really large overlay graphics) from displaying properly (only half of the overlay is displayed). Google Earth 6.0x and previous versions work fine, and Google Earth 7x also works fine (they must have finally fixed it).

Greg


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Traveler
Pooh-Bah


Reged: 08/19/07

Loc: The Netherlands
Re: European light pollution map new [Re: gmartin02]
      #5636733 - 01/22/13 11:51 AM

Nice work here guys!

@ Moderator/Carol: is it possible to make this thread a sticky one?

Thank you very much!


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