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Troubleshooting FAQ | Problems? PM a Red or a Green Gu.... uh, User
droid
rocketman
Reged: 08/29/04
Posts: 4030
Loc: ohio
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hey yall I keep reading this observer and that saying theyre observing in a green region or a yellow region.. etc.
Is there a web page taht expalins this, and will I find my region there?
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102mm Celestron C102HD
Tasco 7TE5 60mm Classic
Tasco 9TE5 60mm Classic
Celestron Ultima 2000 SCT
Remains of an 8 inch dob
Celestron Comet catcher(orange tube)
1960 Edscorp Space Conquerer 6inch f/8
10x50 Bushnell Binoculars.
11T 4.5 inch Tasco reflector Lunograsso?
60mm Telescope Club
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edosaurusrex
super member
Reged: 01/30/07
Posts: 179
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The colors are for differing levels of light pollution. Go to Clear Sky Clock and you will find the light pollution color bar for the city you enter. If you click the bar a map will open up that shows the varying light pollution near your area.
Edited by edosaurusrex (10/23/09 01:08 PM)
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Hrundi
Pooh-Bah
Reged: 02/06/08
Posts: 1230
Loc: Estonia
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Overlay for americans: http://www.jshine.net/astronomy/dark_sky
Source: http://www.lightpollution.it/dmsp/
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Jim Curry
sage
Reged: 10/29/07
Posts: 431
Loc: Maine
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Droid: We're refering to colors on a Google map overlay. I get mine from ClearSkychart.com, there are others. You want to follow the light pollution map link and click on image overlay.
Jim
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Vixen 140 refractor
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walt r
Post Laureate
Reged: 02/13/07
Posts: 3458
Loc: Doylestown, PA
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Not a dumb question at all. We all use terms here that would not be know by someone new to astronomy.
The green or yellow region is a measure of the amount of light pollution at that geographic location. Here is a light pollution map around my location. The white area near the center is Philadelphia and the one to the upper right is NYC with explanations below. There are other on-line sources of this map as well as link on that page.
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Walt
Obsession 18" f/4.45 #1370 AN/SC
MK67 Deluxe 6" f/12 Mak-Cass, Super Polaris GEM, JMI MicroMax DSC
DIY 60mm f/6 Achromat
Cookbook 245 CCD
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