Site Stargazing Report
No location selected. Click on the map to select a spot, then press "Stargaze!".
Selected Coordinates:
Conditions:
| Cloud Cover | |
| Light Pollution | |
| Humidity | |
| Elevation | |
| Rating |
How To Use This Site
Click anywhere on the map to select a spot where you are interested in stargazing. Press the "Stargaze!" button, and a forcast for stargazing conditions will appear in this sidebar.
How to read the Light Pollution Map
The color-coded map uses an expanded version of the Bortle Scale, which measures Light Pollution on a scale of 1-9. The Light Pollution Multiplier (LPX) is given in terms of multiples of additional brightness from a natural dark sky, where 0 is no additional brightness (perfect dark sky), and inner cities have skies over 40x brighter than natural.
Note that Light Pollution measurements are regional estimations based on satellite data taken in 2016, and may not fully reflect the real conditions.
| Color | Description | LPX | Bortle |
|---|---|---|---|
| Perfect | 0 | 1 | |
| Extremely Dark | .01 - .06 | 2 | |
| Very Dark | .06 - .11 | 2 | |
| Dark | .11 - .19 | 3 | |
| Dark with Low LP | .19 - .33 | 3 | |
| Low LP | .33 - .58 | 4 | |
| Moderate-Low LP | .58 - 1 | 4 | |
| Moderate LP | 1 - 1.7 | 5 | |
| Moderate LP | 1.7 - 3 | 5 | |
| Moderate-High LP | 3 - 5.2 | 6 | |
| Moderate-High LP | 5.2 - 9 | 6 | |
| High LP | 9 - 15.6 | 7 | |
| Very High LP | 15.6 - 27 | 7 | |
| Extremely High LP | 27 - 46.8 | 8 | |
| Extremely High LP | 46.8+ | 9 |
How to read a Clear Sky Chart
The Clear Sky Chart gives astronomical seeing conditions at a glance.
Each chart has an abridged version (shown above) and a full version,
which can be seen on clicking on an abridged chart.
They can be hard to read, but as a rule of thumb, dark blue is good, and white/gray is bad,
with the Rows "Cloud Cover" and "Transparancy" on the full chart being most important.
A complete guide to reading them can be found here .