The most anticipated observing event of the year happens Monday morning, May 9, as Mercury will transit across the face of the Sun. The transit begins at 4:13 a.m. Pacific Daylight Time, so it will be under way when the Sun rises in Seattle.
The weather gods are taunting Seattle astronomers, as usual. After a pretty good run of mostly clear weather, we awoke to rain on Mother’s Day morning. The forecast is for mostly cloudy cloudy skies around sunrise Monday, turning to sunny by noon, when the transit will be over. So, it’s pretty unlikely that we’ll see the transit constantly from sun-up to finish, but also looks pretty unlikely that we’ll get skunked.
There are several transit-observing events that we know about. Seattle Astronomy will be down at Seacrest Park near the West Seattle Water Taxi dock with a telescope; join us and have a look!
The Seattle Astronomical Society will hold an observing event at Snoqualmie Point Park near the town of Snoqualmie. (UPDATE: The SAS event has been cancelled due to inclement weather.) There will be transit viewing and programming at the Pierce College Science Dome in Lakewood. Rose City Astronomers and the Oregon Museum of Science and Industry will be observing the transit from the OMSI site in Portland. Check the links for details.
A couple of things to keep in mind about the transit. First, don’t ever, ever, ever look at the Sun without proper protection. Regular sunglasses won’t do the trick. You need special eclipse glasses. Second, Mercury is so small that you will need magnification to see it, and that means a telescope also equipped with the proper solar filters. Be safe out there!
Read our preview article about the Mercury transit.
AstronoMay continues at the Pacific Science Center this week. There will be two interesting lectures on Saturday, May 14. At 10 a.m. Elena Amador, a graduate student at the University of Washington, will talk about the search for water on Mars. Then at 2:30 p.m. Dr. Sandeep Singh, a planetary scientist from the Bear Fight Institute in Winthrop, will speak about Saturn’s largest moon Titan. Singh has worked on NASA’s Rosetta, Cassini, and DAWN missions.
Volunteers from the Seattle Astronomical Society will be on hand much of the day Saturday with solar telescopes for observing the Sun, and the center is offering planetarium shows and other astronomy-related programming throughout the week. Check their calendar for details.
PacSci Podcast about AstronoMay:
The Tacoma Astronomical Society will host one of its public nights beginning at 9 p.m. this Saturday, May 14 on the Fort Steilacoom campus of Pierce College. The program will be about black holes, and there will be observing if the weather permits.
The Battle Point Astronomical Association has several events on Saturday, May 14 at its Edwin Ritchie Observatory in Battle Point Park on Bainbridge Island. At their BPAstro Kids shows at 5 p.m. and 6 p.m. youngsters will build their own planets and check them for life. Following at 8 p.m. astronomer Steve Ruhl will examine exoplanets: How we see them, what they tell us about our solar system, and how we might know if there other habitable worlds out there.
Up in the sky
The Mercury transit is the big astronomical event of the week. The Sky This Week from Astronomy magazine and This Week’s Sky at a Glance from Sky & Telescope have other observing highlights for the week.