Astronomy
Astronomy Pages
Astronomical Viewing Forecast
Provided by Clear Sky Chart
Cloud Cover
| Overcast
| 90% covered
| 80% covered
| 70% covered
| 60% covered
| 50% covered
| 40% covered
| 30% covered
| 20% covered
| 10% covered
| Clear
|
Transparency
| Too cloudy to forecast
| Poor
| Below Average
| Average
| Above average
| Transparent
|
Seeing
| Too cloudy to forecast
| Bad 1/5
| Poor 2/5
| Average 3/5
| Good 4/5
| Excellent 5/5
|
Darkness
| -4
| -3
| -2
| -1
| 0
| 1.0
| 2.0
| 3.0
| 3.5
| 4.0
| 4.5
| 5.0
| 5.2
| 5.4
| 5.6
| 5.8
| 6.0
|
| Day
| Dusk
| Twilight
| Full Moon
| No Moon
|
Temperature
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
°F
| -40
| -31
| -22
| -13
| -4
| 5
| 14
| 23
| 32
| 41
| 50
| 59
| 68
| 77
| 86
| 95
| 104
| 113
|
|
For more in-depth explanation of the information presented in the Clear Sky Charts, click on either chart.
Web Links
The Interactive Photopic Sky Survey is an awesome 360° panoramic view of the entire night sky surrounding our planet. It is a 37,440-exposure, 5,000-megapixel photograph taken and assembled by Nick Risinger, a photographer and designer from Seattle, Washington. Check out his story about taking the photographs and the assembly process.