Clear Sky Chart
Astronomy-Weather Map
| Color | Meaning |
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| | Clear | | | 10% covered | | | 20% covered | | | 30% covered | | | 40% covered | | | 50% covered | | | 60% covered | | | 70% covered | | | 80% covered | | | 90% covered | | | Overcast |
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Map provided by the Canadian Meteorological Center and is © Crown copyright, product of Environment Canada.
Cursor shows location of the Maple Valley Observatory Clear Sky Chart.
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Use these maps to check if you are observing at a place where the forecast changes slowly with distance -- that's where clear sky chart
accuracy is best.
The observation of fine detail seen in telescopes on planets or the moon requires good seeing. Visiblity of galaxies
nebulae in telescopes, or the milky way with the un-aided eye, requires good transparency. All astronomical observations require low cloud cover.
Humidity, Wind, and Temperature won't determine if you can observe, but they might affect how comfortable you are.
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