Posts Tagged ‘Mercury’

Sharing the Sky

Sunday, April 26th, 2009

I am so pleased.  I found a very nice horizon for tonight’s sunset event, and it is in a safe and comfortable location!  It is near the edge of a pretty little pond full of serenading frogs and surrounded by a small field that includes wild rabbits and killdeers.  There are a couple of streetlights in the near vicinity; fortunately, they are a timer that turns them off and on every so often.  I’ll be visiting this special spot often.

Watching tonight’s conjunction was so enjoyable.  The weather was perfect – just enough of a light breeze to keep the mosquitoes away – and the sky was very clear.  The pink and red hues of the sunset were gorgeous, especially when that thin crescent moon suddenly appeared in the still-blue region just above; and then of course, Mercury and Pleiades added perfect sparkle as the sky grew darker.  Several distant airplanes passed through, adding occasional luminous trails to the view.  I even managed to capture one crossing directly in front of the moon.

As I stood there, watching and waiting, I couldn’t help but think of the friends that I’ve made lately and how many of them were probably standing outside their own homes that very moment,  feeling the same way that I do about the night sky.  I thought about the way that those friendships formed across so many miles through one common passion – astronomy – and how those friendships have been my single most valuable resource in my own pursuit of astronomy.  I could read a thousand books, visit a hundred websites, own all the astronomy tools in the world, but without those friendships – that sharing of experiences, knowledge, and excitement – astronomy just would not be the same for me.  I would be just as curious and have that same feeling of wonder, but the pursuit would be almost mechanical and certainly lonely.  Being alone with the stars is one thing – in fact a marvelous thing – but having no one with whom to share that oneness … well, I think it would take the heart and soul right out of astronomy, for me.

This is a meager offering (I wish I were a better photographer) but these pictures of tonight’s conjunction are for my astronomy friends – for all that you give simply by sharing your passion with others, and for allowing me to share with you. (You can click the images for the full-sized versions, and click the x in the bottom-right corner to close.)

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 Luna with Pleiades

Mercury and Pleiades at Sunset

Saturday, April 25th, 2009

Well, I struck out on this evening’s “thinnest” crescent moon – I never could find a clear enough horizon – but I did capture Mercury and Pleiades at sunset.  Although I’m not entirely pleased with the image, I am happy to have had the opportunity to see this pairing.  Tomorrow evening, the Moon will be a little more illuminated and will set a little later, making a sighting much more likely.  I’m looking forward to seeing it with Mercury and Pleiades!

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Image Specs: Canon XTi/400D, 6secs., 55mm, f/5.6, ISO400

Looking at Luna

Friday, April 24th, 2009

This weekend offers two excellent opportunities to observe a very thin crescent moon at sunset.  It’s also a good time to capture some nice “earthshine” images and spot the planet Mercury.

Saturday evening, the new moon will be mere hours old – the thinnest of slivers – with it’s actual age depending upon your location and what time you are observing.  Sunday evening, the moon will be less than two days old – still a thin sliver – and will appear in close position with Pleiades and Mercury.

On both evenings, you’ll find the moon just above your WNW horizon.  On Saturday, Mercury appears above and slightly left of the Moon.  On Sunday,  Mercury appears closer to Luna, this time beneath it, with Pleiades in the middle to form a beautiful trio of objects both near and distant.

Using your binoculars, you can get a good look at that darker portion of the Moon – that region not illuminated by direct sunlight – known as “earthshine.”  We call this ashen-colored region of the Moon “earthshine” because it is the Earth’s own reflected sunlight that makes it visible.  Surprisingly, it was Leonardo Da Vinci, even before  Copernicus’ sun-centered theory, who first described the source of the moon’s illumination, including the secondary glow of earthshine.

Once you’ve browsed the lunar surface, have a look at Mercury.  You might notice a pinkish hue, and this is due to our own atmosphere, just as sunsets and a rising moon sometimes display a red or orange tint.  Of course, you’ll have to focus on Pleiades, as well.  This beautiful cluster is much more distant, but younger than either Mercury or the Moon.  The Pleiades cluster contains about three-thousand member stars, some one-hundred-million years old, and is positioned more than four-hundred light-years away in the constellation Taurus.  Even at that distance, this cluster is actually one of our galaxy’s closest.

Luna currently appears close to the Sun, following it into the horizon at sunset, so you’ll have to keep two things in mind.  One, use special care when observing anywhere near the sun and never ever look directly at the sun through unfiltered binoculars or telescopes.  Two, start your observations before full darkness sets in, else you may find the moon already too low from your location.

For local lunar calculations, I use an excellent program called Quick Phase Pro.  You can also check out the U.S. Naval Observatory for regional lunar information.  Both programs offer lunar rise/set/transit times, phase information, and lunar illumination.  The Quick Phase program offers a few more details, like phase age and historical data.

If you’ve never taken a picture of the moon or evening sky, this is a good time to give it a try.  Any camera should work fine; and remember, it’s not so much how accomplished an image appears, rather, its that you accomplish the effort of imaging.  For better results, take several pictures, changing your settings if your camera allows.

So, get out there this weekend and have a look at Luna; and if you do capture some images, share them with us.  We’d love to see your work.