Issue # 81/82 | 2011 • $2.50 nightscape A PUBLICATION OF THE INTERNATIONAL DARK-SKY ASSOCIATION “The night sky provides a shared and common experience available for everyone. This common experience provides links between cultures throughout the world, both past, present and future.” –John Goldsmith, twaN photographer IN thIs Issue 4 aGm News 6 & 7 astronomy News 8 & 9 Chapter News 12–17 Feature article: The World at Night 18 & 19 astrophotography 20 Lighting News Babak Tafreshi Babak 21 DC update NO, IT’S NOT A UFO. BUT ITS UNEQUALED PERFORMANCE MAY BE JUST AS STARTLING. operation including guaranteed light levels, maintenance, group lamp replacements, Light-Structure Green™ reduces your sports-lighting monitoring, and remote on/off control services. operating cost by 50% or more with less energy consumption, cuts spill light by 50%, and eliminates From foundation to poletop, Light-Structure 100% of your maintenance costs for the next 25 Green makes your sports-lighting projects fast, years. We guarantee it! trouble-free, and now more affordable than ever. Call, email, or check our website today for details. Light-Structure Green includes Musco’s Constant 25™ product assurance and warranty program, which Unequaled performance . provides 25 years of carefree lighting equipment for your budget, for the environment. Contact Us Today. 800-825-6030 Photos left to right: Yankee Stadium, Bronx, NY; Burger Stadium, Austin, TX; Citi Field, Mets Stadium, Flushing, NY www.musco.com ©2010 Musco Sports Lighting, LLC · ADIDA10-1 e-mail:
[email protected] Dear members, The mission of the International Dark-Sky Association (IDA) is to preserve and protect the s many of you know, IDA was founded as a volunteer organization.