ClearDarkSky

ClearDarkSky brings you:

Clear Sky Charts

Based on a numerical weather model, Clear Sky Charts are perhaps the most accurate and the most usable forecasters of astronomical observing conditions for over 5300 observatories and observing sites in North America.

Light Pollution Map

A color-coded map of the world showing sources and levels of light pollution (man-made light that lights up the night sky and reduces what astronomers can see). It is a mirror of David Lorenz's Light Pollution Atlas 2016, but superimposed on Open Street Maps. Used by many to find good observing sites. Used with permission

North-American Seeing Observations Database

A web database which allows observers all over North America to enter observations of seeing (atmospheric turbulence which causes loss of telescopic resolution) and correlates them to seeing forecasts. The data is used to refine numerical forecast models.

The web pages, computer programs and databases at cleardarksky.com are written by:

Attilla Danko

Software Architect | Software Designer

High Availability | Embedded Operating Systems | Large Systems

danko@pobox.com

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