|
WATCHING
THE PERSEID METEOR SHOWER FROM WIMBERLEY
The Perseid meteor shower should be a
good show during the ideal viewing time. For sky watchers in
Wimberley and North America, the watch begins after nightfall on August 11th and continues until sunrise on the 12th.
Weather permitting, conditions
should be favorable for spotting dozens of
shooting stars each hour. The 2009 Perseids will
have a little competition from the moon, but a
window of opportunity exists for dramatic scenes
in the sky.
NASA suggests, "The 55% gibbous Moon will glare down from the constellation Aries just next door to the shower's radiant in Perseus. The Moon is beautiful, but don't stare at it. Bright moonlight ruins night vision and it will wipe out any faint Perseids in that part of the sky."
The early evening hours of August 11th from about 9 to 11 PM will offer the best viewing window. This is because both Perseus and the Moon will be hanging low in the north, reducing lunar glare while positioning the shower's radiant for a nice display of
Earthgrazers. Click
here for more about meteor showers.
|
Wimberley residents and Hill Country
vacationers in August can be treated to one of the more spectacular sky shows.
Streaks of light shoot across the sky in a dazzling display in mid-August. Earth will travel through the densest part of the Perseid stream in early
morning. Viewing should be especially rewarding during late-night hours
until the sun begins to light the morning.
The August Perseids yield as many as two meteors each minute at peak and are among the strongest of readily observed annual meteor showers. With Wimberley's still mostly-dark skies, observers may see even larger numbers. Throughout an overnight watch, there are also typically several bright, flaring meteors with excellent trains to observe.
Proving again that beauty is in the eye of the beholder, these showy meteors are
really debris from the Swift-Tuttle comet, first discovered in 1862. The dross ranges in size from sand grains to marbles. When the Earth passes close to the orbit of Swift-Tuttle, these tiny pieces crash into the Earth's atmosphere at about 133,200 miles per hour. This encounter creates the bright streaks of light that decorate the Wimberley sky.
And these little bits are hot! Meteors are heated to more than 3000 degrees Fahrenheit! No wonder they begin to glow! Meteors are heated by the compression of air in front in them, not by friction, as is commonly thought. In turn, the heated air heats the meteor, vaporizing most. The result of that phenomenon is what we call a shooting star.
Viewing can be a very pleasurable event. Who can beat the experience of lying on a sleeping bag or chaise
lounge under a clear Wimberley sky, maybe with your favorite music playing quietly, watching the meteors racing along the Milky Way? If you make sure your toes are pointed northeast, you'll get the best view.
This year, the 9 or 10 PM
hours before the early morning peak will offer best viewing. There may not be as many meteors to see, but those that streak across the sky will create memories.
One pre-requirement is cooperation from the weather with ideal
clear skies. With that bit of luck, there can be enough "shooting stars"
in one night to make all your wishes come true!
The appearance of the Perseids are also an excellent opportunity for photographing meteors.
»
Check
out this site for tips.
More...
» NASA - The
2009 Perseid Meteor Shower
|
