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djlorenz committed May 6, 2021
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2 changes: 2 additions & 0 deletions README.md
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djlorenz.github.io
==================
1 change: 1 addition & 0 deletions astronomy/lp2006/.history
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138 changes: 138 additions & 0 deletions astronomy/lp2006/colors.html
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<!DOCTYPE html>
<html>
<head>
<title>Expanded Color Scale</title>

<meta name="description" content="Light Pollution Atlas 2006">
<meta name="keywords" content="Light Pollution Atlas, Light Pollution Maps, 2006">

<style>
body{
background-color:rgb(27,27,27);
}

img {
height:auto;
width:100%}

body{
margin:0;
padding:10px;
}

#main {
max-width:900px;
margin:0 auto;
border:5px solid;
border-color:rgb(60,60,60);
padding:10px;
background-color:rgb(0,0,0);
}

p.bigbold{
font-family:Arial, Helvetica, sans-serif;
color:rgb(170,170,170);
text-align: center;
font-size:200%;
font-weight:600;
line-height:110%;
margin-bottom:10px;
margin-top:5px;
}

p.big{
font-family:Arial, Helvetica, sans-serif;
color:rgb(170,170,170);
font-size:140%;
font-weight:200;
line-height:110%;
margin-bottom:5px;
margin-top:5px;
margin-left:5px;
margin-right:5px;
}

p.medium{
font-family:Arial, Helvetica, sans-serif;
color:rgb(170,170,170);
font-size:125%;
font-weight:200;
line-height:125%;
margin-bottom:10px;
margin-top:10px;
margin-left:10px;
margin-right:10px;
}

p.normal{
font-family:Arial, Helvetica, sans-serif;
color:rgb(170,170,170);
font-size:100%;
font-weight:100;
line-height:110%;
margin-bottom:0px;
margin-top:0px;
margin-left:5px;
margin-right:5px;
}

p.center{
font-family:Arial, Helvetica, sans-serif;
color:rgb(170,170,170);
text-align: center;
font-size:125%;
font-weight:200;
line-height:110%;
margin-bottom:5px;
margin-top:5px;
margin-left:5px;
margin-right:5px;
}


a{
font-family:Arial, Helvetica, sans-serif;
font-size:100%;
font-weight:200;
line-height:125%;
color:rgb(100,100,255);
}

a:link {color:rgb(90,90,255);} /* unvisited link */
a:visited {color:rgb(180,90,235);} /* visited link */
a:hover {color:rgb(200,80,160);} /* mouse over link */
a:active {color:rgb(245,90,90);} /* selected link */

a.big{
font-size:100%;
font-weight:600;
line-height:110%;
margin-bottom:10px;
margin-top:10px;
}

</style>

</head>


<body>

<div id="main">
<p class="bigbold">Expanded Color Scale</p>

<p class="medium">These maps have an expanded color scale. In Pierantonio Cinzano's original atlas, the zone boundaries are related by powers of three (except for the boundary between black and gray). Therefore, an expanded map with twice the number of zones should have zone boundaries that are a power of the square root of three. I expanded the color scheme by having two shades for each color--one dark and one light. Below is the new color scale. The units on the top are magnitudes per square arc-second and the units on the bottom are the ratio of artificial sky brightness to "natural sky brightness" (i.e. 2.0 => the artificial sky brightness is twice as bright as natural).</p>

<img src="colorbar.png" style="float:center">

<br>
<hr color=gray>
<p class="normal">For more information contact:</p>
<p class="normal">David Lorenz</p>
<p class="normal">[email protected]</p>

</div>


<address></address>
</body> </html>
202 changes: 202 additions & 0 deletions astronomy/lp2006/index.html
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<!DOCTYPE html>
<html>
<head>
<title>Light Pollution Atlas 2006</title>

<meta name="description" content="Light Pollution Atlas 2006">
<meta name="keywords" content="Light Pollution Atlas, Light Pollution Maps, 2006">

<style>
body{
background-color:rgb(27,27,27);
}

img {
height:auto;
width:100%}

body{
margin:0;
padding:10px;
}

#main {
max-width:900px;
margin:0 auto;
border:5px solid;
border-color:rgb(60,60,60);
padding:10px;
background-color:rgb(0,0,0);
}

p.bigbold{
font-family:Arial, Helvetica, sans-serif;
color:rgb(170,170,170);
text-align: center;
font-size:200%;
font-weight:600;
line-height:110%;
margin-bottom:10px;
margin-top:5px;
}

p.big{
font-family:Arial, Helvetica, sans-serif;
color:rgb(170,170,170);
font-size:140%;
font-weight:200;
line-height:110%;
margin-bottom:5px;
margin-top:5px;
margin-left:5px;
margin-right:5px;
}

p.medium{
font-family:Arial, Helvetica, sans-serif;
color:rgb(170,170,170);
font-size:125%;
font-weight:200;
line-height:125%;
margin-bottom:10px;
margin-top:10px;
margin-left:5px;
margin-right:5px;
}

p.normal{
font-family:Arial, Helvetica, sans-serif;
color:rgb(170,170,170);
font-size:100%;
font-weight:100;
line-height:110%;
margin-bottom:0px;
margin-top:0px;
margin-left:5px;
margin-right:5px;
}

p.center{
font-family:Arial, Helvetica, sans-serif;
color:rgb(170,170,170);
text-align: center;
font-size:125%;
font-weight:200;
line-height:110%;
margin-bottom:5px;
margin-top:5px;
margin-left:5px;
margin-right:5px;
}


a{
font-family:Arial, Helvetica, sans-serif;
font-size:100%;
font-weight:200;
line-height:125%;
color:rgb(100,100,255);
}

a:link {color:rgb(90,90,255);} /* unvisited link */
a:visited {color:rgb(180,90,235);} /* visited link */
a:hover {color:rgb(200,80,160);} /* mouse over link */
a:active {color:rgb(245,90,90);} /* selected link */

a.big{
font-size:100%;
font-weight:600;
line-height:110%;
margin-bottom:10px;
margin-top:10px;
}

</style>

</head>


<body>

<div id="main">
<p class="bigbold">Light Pollution Atlas 2006</p>

<img src="world2006_low25.png" style="float:center">

<p class="bigbold">Attention: a new 2016 Atlas is now <a class="big" href="http://djlorenz.github.io/astronomy/lp2016/" target="_blank">available</a>!</p>

<p class="medium">Welcome to the latest version of the <a href="http://www.lightpollution.it/worldatlas/pages/fig1.htm" target="_blank">World Atlas of the Artificial Night Sky Brightness</a>! I've re-calculated Pierantonio Cinzano's original atlas using more recent <a href="http://ngdc.noaa.gov/eog/dmsp/download_radcal.html" target="_blank">satellite data</a> from 2006. The global coverage is also expanded from the original atlas (e.g. Hawaii, Alaska, and northern Canada and Siberia are now included).</p>

<p class="bigbold">View Atlas in <a class="big" href="overlay/dark.html" target="_blank">OpenStreetMap</a></p>
<p class="normal" style="text-align: center">The maps have a new <a href="colors.html" target="_blank">expanded color scale</a>.</p>
<hr color=gray>

<br>
<p class="bigbold">The Maps:</p>

<p class="medium">The full resolution world map is very hard to view due to its size. Therefore I also have a medium resolution world map and full resolution continent-scale maps that may be easier to use. A map showing the domain of the 6 continent-scale maps is below. There are two versions of each map: one with borders and coastlines and the other with nothing except light pollution. The resolution of most maps is 1/120 degrees. The medium resolution world maps are 1/40 degrees. I've used an <a href="colors.html" target="_blank">"expanded color scale"</a> for all maps.</p>

<table border="1" align="center">
<tr>
<th><p class="big">No Coastlines or Borders</p></th>
<th><p class="big">White Coastlines and Borders</p></th>
<th><p class="big">Domain (degrees)</p></th>
</tr>
<tr>
<td><p class="center"><a class="big" href="world2006_low3.png" target="_blank">Medium resolution world map</a></p></td>
<td><p class="center"><a class="big" href="world2006B_low3.png" target="_blank">Medium resolution world map</a></p></td>
<td><p class="center">65S to 75N, 180W to 180E</p></td>
</tr>
<tr>
<td><p class="center"><a class="big" href="NorthAmerica2006.png" target="_blank">North America</a></p></td>
<td><p class="center"><a class="big" href="NorthAmerica2006B.png" target="_blank">North America</a></p></td>
<td><p class="center">7N to 75N, 180W to 51W</p></td>
</tr>
<tr>
<td><p class="center"><a class="big" href="SouthAmerica2006.png" target="_blank">South America</a></p></td>
<td><p class="center"><a class="big" href="SouthAmerica2006B.png" target="_blank">South America</a></p></td>
<td><p class="center">57S to 14N, 93W to 33W</p></td>
</tr>
<tr>
<td><p class="center"><a class="big" href="Europe2006.png" target="_blank">Europe</a></p></td>
<td><p class="center"><a class="big" href="Europe2006B.png" target="_blank">Europe</a></p></td>
<td><p class="center">34N to 75N, 32W to 70E</p></td>
</tr>
<tr>
<td><p class="center"><a class="big" href="Africa2006.png" target="_blank">Africa</a></p></td>
<td><p class="center"><a class="big" href="Africa2006B.png" target="_blank">Africa</a></p></td>
<td><p class="center">36S to 38N, 26W to 64E</p></td>
</tr>
<tr>
<td><p class="center"><a class="big" href="Asia2006.png" target="_blank">Asia</a></p></td>
<td><p class="center"><a class="big" href="Asia2006B.png" target="_blank">Asia</a></p></td>
<td><p class="center">5N to 75N, 60E to 180E</p></td>
</tr>
<tr>
<td><p class="center"><a class="big" href="Australia2006.png" target="_blank">Australia</a></p></td>
<td><p class="center"><a class="big" href="Australia2006B.png" target="_blank">Australia</a></p></td>
<td><p class="center">48S to 8N, 94E to 180E</p></td>
</tr>
<tr>
<td><p class="center"><a class="big" href="world2006.png" target="_blank">Full resolution world map</a></p></td>
<td><p class="center"><a class="big" href="world2006B.png" target="_blank">Full resolution world map</a></p></td>
<td><p class="center">65S to 75N, 180W to 180E</p></td>
</tr>

</table>

<br>
<img src="key.png" style="float:center">

<br>

<hr color=gray>
<p class="normal">For more information contact:</p>
<p class="normal">David Lorenz</p>
<p class="normal">[email protected]</p>

</div>


<address></address>
</body> </html>
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