Sunday, June 7, 2009

How is Astronomy Like Sailing?

There are actually a number of parallels...
  • Both can be experienced simply and casually: a relaxing day sail where you wander where the breeze takes you and the laziness of laying out under the stars tracing the constellations and watching meteors flash across the sky.
  • Or, as a highly technical and challenging past time or way of life: for sailing, everything from local circuit racing to the Olympics, America's Cup and round-the-world races and, for astronomy, challenges such as comet and NEO hunting, planetary and deep sky imaging using advanced scopes, mounts and cameras and, of course, professional astronomy. At this end of the scale, sailing and astronomy have something else in common: both can be incredibly expensive.
  • One thing shared by both astronomy and sailing is the opportunity to get a little closer to nature, to experience a sense of awe at the majesty of the world around us and the universe beyond.

Unfortunately, there's at least one more thing they both have in common: being at the mercy of the weather. Just as you can't sail if there isn't enough (or there is too much) wind, earthbound astronomers can't observe if it's too cloudy. Yes, I know advances in technology have changed that to a degree - I've written here about
using Slooh to image/observe on nights when I can't get my own scope out because of the weather - but even remote observing sites are still at the mercy of local weather conditions.

This subject came to mind after our trip last week to
Yosemite National Park and Sequoia and Kings Canyon National Park. I had hoped to take advantage of the lack of light pollution to experiment with some star trail photography using my Nikon D40, possibly even getting some starlit shots of some of the icons of Yosemite such as El Capitan or Half Dome.

As it turned out, it just wasn't to be. The first couple of nights we'd had long, long days in valley and because the Park Service had evening programs scheduled for later in the week we turned in early each night. We did try catching a glimpse of the sky from our cabin but looking up through the trees all we could see was Ursa Major, almost straight over head. Unfortunately, over the course of the remainder of the trip there were thunderstorms almost daily. Never a lot of rain - usually about an hour or so a day - but each night it was so cloudy there was nothing to see.

Most amateur astronomers I know are as pragmatic about the weather as most of the sailors I know... being so dependent on the weather, you get used to enjoying clear weather when you have it and finding something else to do when you don't. So, although we didn't come home with any star trail shots, we did come up with a few shots like this one of a beautiful sun pillar (read more about them here). I won't say I wasn't disappointed that we didn't get to spend time under the sky during this trip but it passed quickly. After all, now I have another reason to return...


Saturday, May 9, 2009

Earth Hour: Dallas

A bit late posting this (been a bit of an absentee amateur astronomer lately thanks to a busy schedule at work), but thought I would share what it looked like to see the lights of downtown Dallas go out in celebration of Earth Hour, an event organized by the World Wildlife Fund to bring attention to the need for solutions for global climate change.

On March 28th, 2009, the Texas Astronomical Society of Dallas hosted an Earth Hour star party on the roof of West Village in uptown Dallas. TAS members brought out with their telescopes and the Dallas Museum of Nature and Science Planetarium staff presented shows in their portable planetarium. The real excitement started at 8:30 pm as downtown lights went out. What a spectacular site!








Also, check out this article for great shots of other major cities around the world celebrating Earth Hour.

Sunday, April 5, 2009

Celebrating Sun Day


In this case, although it is the first (or seventh, depending on your perspective) day of the week, I'm not talking about Sunday but Sun Day, the final outreach event of 100 Hours of Astronomy, a cornerstone project of the International Year of Astronomy 2009. All over the world, people are checking out a somewhat average, yellow star - our Sun. We're not seeing much of it here in Florida today thanks to the clouds but even if it's cloudy where you are you can still read about the Sun, find out what others are doing today to celebrate and even watch the Sun. In fact, unless you live near one of the solar viewing parties happening today or have your own solar telescope, the best place to see the Sun is over the Internet. Check out some of these sites for spectacular views of the Sun, both in picture and video (some are even live!):

Astronomy Picture Of the Day
Live View (4/5) from Solar Telescope in Italy (check out the solar prominence!)
Space Weather

If you decide to get out and check out the Sun today yourself, be sure and observe safely. You can find instructions on how here.

Happy Sun Day!