The Correct LEDs for Chicago

Light pollution and the encroachment of sky glow are subtle yet pervasive problems that adversely affect our lives in many ways. The Astronomical League stands firm in its position advocating the responsible use of outdoor lighting: The right amount of light, in the right direction, at the right time.

The city of Chicago is planning to install 270,000 LEDs. It would benefit the quality of life of the residents in that area if those LEDs had a correlated color temperature of 3000K or less, and if their associated fixtures were fully shielded and pointed downward. In light of that, a petition to the mayor of Chicago, Rahm Emanuel, has been created to show support of quality outdoor lighting.

Petition. Bring Back Chicago's Starry Night with Responsible City Lighting:

Contact Audrey Fischer of the Chicago Astronomical Society for more information.

The Astronomical League supports rational and civil discourse to illuminate the facts about LED lighting and light pollution.

Posted By John Goss read more

Olympic Astronomical Society donates Horkheimer/Library Telescope


The Olympic Astronomical Society (OAS) in Bremerton just handed over their first Library Telescope to the Kitsap County Library, Sylvan Way branch, Wednesday 30 March. Cliff Mygatt, President of the OAS, presented the telescope to Librarian Megan.

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What's Up with the Astronomical League - March 2016


The latest ALCor newsletter includes dated information regarding ALCon 2016 and Globe at Night and EarthSky announcements.

Download here

Posted By Carroll Iorg read more

Celestial Observations Denebola— β Leo


By Bill Pellerin, Houston Astronomical Society

Object:  Denebola — β Leo
Class:  Star
Constallation:  Leo
Magnitude:  2.14
R.A.:    11 h, 49 m,  04 s
Dec:    14°  34’ 19”
Size/Spectral:  1.75 Solar Masses, Color: A3
Distance:  35.9 ly
Optics needed: Unaided eye

The name of this star may seem somewhat familiar. There’s another star in the sky named Deneb, in the constellation Cygnus (the swan). The name Deneb is from the Arabic word dhaneb which means ‘the tail’.  The name Denebola is a combination of the Arabic words Deneb Alased, meaning the tail of the Lion, which, in fact it is. It lies at the eastern end of the constellation Leo the Lion.

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Mercury Transit Special Award is now here


The Astronomical League's Special Award for the Mercury Transit is now on-line with all the requirements outlined.  There are options for those who can take images as well as those who can't.  Check it out by clicking here.

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Registration for ALCon 2016 now open


Registration for ALCon 2016 in Washington DC is now available at 

Listen to the many astronomy presentations; take the special tours of the Smithsonian meteorite collection, the National Air & Space Museum, the US Naval Observatory, Goddard Space Flight Center, and the Smithsonian's Udvar-Hazy Annex; enjoy an evening at the Star-becue; and hear about the future of space exploration from the leader of NASA – keynote speaker Maj.Gen. Charles Bolden, Jr., NASA Administrator!

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