Hidden Mountain Astronomical Society

Clear Sky Chart for Hidden Mountain Observatory

Use Our Clear Sky Chart to Aid in Planning Your Night Out Under the Stars.

The heavens declare the glory of God... Psalm 19:1 KJV The Holy Bible

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Welcome to the "Hidden Mountain Observatory Clear Sky Chart".
A legend appears directly underneath the chart to explain what each color block represents. The time appears and reads vertically over each column. Clear skies, good seeing, and happy stargazing!!!

Hidden Mountain Observatory Clear Sky Chart
Clear Sky Chart Legend

A Clear Sky Chart is a visual, web-based tool designed for astronomers, providing a forecast of cloud cover, transparency, and seeing conditions for a specific location, allowing stargazers to plan their observing sessions effectively.

A More Detailed Explanation

Clear Sky Charts were created to help astronomers determine the best time to observe the night sky by forecasting cloud cover, transparency (how clear the atmosphere is), and seeing (how much the atmosphere distorts images). The data for these charts comes from the Canadian Meteorological Centre's (CMC) numerical weather forecast model, which is specifically designed for astronomical observing.

The charts were invented and are maintained by Attilla Danko. There are charts available for thousands of locations in North America, with the ability to request charts for specific sites. The charts use a color-coded system to represent cloud cover, with darker blues indicating clear skies and lighter shades representing increasing cloudiness. Some charts also include forecasts for wildfire smoke, which can affect transparency, and a darkness forecast that indicates when the sky will be dark, assuming no light pollution or clouds.

The Heavens Declare the Glory of God

Hidden Mountain Observatory Contact Information

Contact Hidden Mountain Observatory

Want to contact us? Hidden Mountain Observatory would love to hear from you! Don't forget to follow us on Facebook for beautiful Astrophotography as well as exciting updates on our progress and future programs.
Hidden Mountain Observatory Telescope[email protected]

Phone for Voice & Text: (423) 743-9255
Mailing Adr: Hidden Mountain Observatory
P.O. Box 153, Unicoi, TN 37692-0153

Hidden Mountain Observatory Astrograph
Hidden Mountain Astronomical SocietyBays Mountain Astronomy Club MemberAstronomrical League Member

Proud Member of Southern Appalachian Astronomy Club (SAAC), the Astronomical League,
and Bays Mountain Astronomy Club (BMAC) of Bays Mountain Park and Planetarium

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