Pittsburgh Chapter of the International Dark-Sky Association

The mission of Pittsburgh's IDA chapter is to protect dark night skies bright with stars for the enjoyment of all.

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The next meeting of the Pittsburgh Chapter of the International Dark-Sky Association will be at 6:30 pm on Monday, September 17, 2018 in the Wright Room in the Cohon University Center at Carnegie Mellon University.

Park for free after 5 pm in the East Campus Garage on Forbes Ave. Take a ticket at the entrance, then put it back in afterwards, when you leave.


City plans to change streetlights to LEDs and a new Metro21 grant to make a light pollution map of Pittsburgh, before, during and after the installation.

Continuation of our various projects: education, public outreach, local astrophotography, new IDAPgh website, comparisons of the sky in Pittsburgh from long ago until now, creation of attractive content for our social media, membership coordination, City Council meeting attendance, radio interviews of members, children’s light pollution book, analysis of eight years of Allegheny Observatory All-Sky camera data (to put a number to the increase of light pollution in the city), etc.