Thursday, August 13, 2009

Perseids Meteor Watch

The 2009 Perseids Meteor Watch I worked last night (August 12) was very mixed in results. The Portage Park District set us up in a fine little park with no ground-level lights, a nice paved parking lot, and clear grassy areas. There was a wide view of the sky and a good southern horizon. A Sheriff's deputy was on hand as was the District's naturalist -- really good support, especially in case of a big turnout. Then there are the "buts"...

Admittedly we put the event together in hurried fashion. Word didn't get out to the public as broadly or with enough lead time so only a couple of families showed up.

Then there was the sky. We were very close to the city of Ravenna but I'd hoped we would be just far enough away to escape the light bubble. Not much luck there. As the Sun sank below the western horizon a funny thing happened ... twilight shifted to the south. Yeah, huge levels of light pollution rose up in the southern sky right through the heart of Sagittarius. So while the clear skies allowed us to see the Milky Way, with dust lane, directly overhead, its heart was obliterated by the "Ravenna Nebula." Too bad.

Attendees and volunteers did, however, enjoy a few very good Perseid meteors. I myself saw only about five; being busy with telescopes and chatting with visitors has its costs. The 6-inch Meade telescope worked well but was impeded for want of a really good polar alignment: it had problems centering on objects it was told to "GoTo" but tracked very well once there. The dew point was high and everything quickly became quite damp, even wet, as the night progressed. The extended AstroZap dew shield saved the objective from fogging, however, so we saw decent views of Jupiter with three moons, and very good views of the Andromeda Galaxy, and M15 (a globular star cluster in the constellation Pegasus).

I tore down after the official 11:30 close. Before getting into my car to leave, a very nice Perseid streaked across the sky leaving a trail that glowed for a second or two -- as if just for me. I headed home, a bit disappointed but recalled a few happy visitors who saw planets, stars, galaxies, and meteors!

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