The weather forecast is decidedly iffy for folks in Western Washington to view the transit of Mercury across the Sun on Monday morning, November 11. But a number of groups, including Seattle Astronomy, are planning to be out and waiting for breaks in the clouds in order to catch a glimpse of this relatively rare astronomical event.
Typically there are 13 Mercury transits visible in any given century, and there will be 14 of them during the 21st Century. We last had one visible from Seattle just over three years ago, in May of 2016. Tomorrow’s will be the last until 2032, but that one and the next won’t be visible from North America. Our next chance to see a Mercury Transit from Seattle will be in May of 2049.
Thus we’ll be down at Seacrest Park in West Seattle near the Water Taxi dock in hopes that we won’t have to wait 30 years or travel halfway around the globe to see Mercury in transit. We’re aware of a handful of other viewing opportunities tomorrow in the Northwest:
- Cloud Break Optics will be at the boat launch at Magnuson Park
- Tacoma Astronomical Society will co-sponsor an event at the Pierce College Science Dome
- They’ll have the solar scopes out at Goldendale Observatory State Park
- Eugene Astronomical Society will be at College Hill Reservoir
Watch our calendar page for others; we’ll add them if we hear about them for the rest of the day.
There are a couple of things to consider when viewing the transit. First, the requisite warning not to look at the Sun without eclipse glasses or a properly filtered telescope. Second, you’ll not likely see Mercury without some magnification; it’s pretty small. Third, don’t try to use eclipse glasses with a telescope or binoculars; the equipment itself must be properly filtered or severe eye damage will result.
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