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GARRETT COUNTY SKIES
By Dr. Bob Doyle, Frostburg State Planetarium
Doyle writes this column for those who
would like to identify the brightest stars, planets and sights in their
backyards. To ask questions or get a planetarium brochure, call Dr. Doyle at
(301) 687-7799 .
AUGUST 2008 SUN - As August opens, the
sun is in the star group Cancer where it stays through the early hours of
August 10th. The sun then crosses into Leo, where it remains through Mid
September. (These dates are based on the actual star group boundaries and
sun's position, not the 2500 year old dates used by Western astrologers.)
The amount of daily sunlight in August changes by more than an hour; early
August has 14.2 hours of daylight while the end of August has 13.1 sunlight
hours. Sunrises in Oakland in early August are about 6:20 a.m., advancing to
6:45 p.m. at month's end. Sunsets in Oakland in early August are about 8:30
p.m., dropping to 7:50 p.m. in late August. During August the sun's peak
height at mid day decreases from 68 to 58 degrees. At dawn the morning stars
begin to fade away around 5:30 a.m. while evening stars first appear about
9:15 p.m.
AUGUST 2008 MOON - Low in the western dusk, a
slender crescent moon reappears near the planets Saturn and Mars on August
3rd. The evening moon grows to half full on August 8th (like a "D"),
offering the best views of its craters and mountains through binoculars. The
nearly full moon appears near the bright planet Jupiter on the evenings of
August 12th and 13th. The evening moon grows to full on August 16th, rising
as the sun sets and hanging in the sky all through the night. In the last
ten days of August, the moon is an morning sky object, appearing half full
in the southern dawn on August 23rd.
THE BRIGHT PLANETS IN AUGUST 2008 - Our five
nearest planetary neighbors appear as points of light that shine steadily,
unlike the bright night stars that twinkle. The brightest planet Venus is at
a low angle to the sun and may be briefly glimpsed a half hour after sunset
(9 p.m. in early August, 8:45 p.m. in mid August and 8:20 p.m. in late
August.) Mercury be seen low in the western dusk in the second half of
August, appearing near brilliant Venus then. As it gets dark, the planet
Mars shines dimly in eastern Virgo. To the right of Mars is the brighter
planet Saturn. In mid August, Venus passes by Saturn. Low in the southern
evening sky is the very bright planet Jupiter. Binoculars held steadily will
reveal Jupiter's big moons as tiny points near Jupiter that change their
positions from night to night. So August is a month when one may see all
five bright planets in the evening sky, if one finds a place with a flat
western horizon; try looking in mid August a half hour after sunset (when
Saturn, Venus and Mercury are then close).
THE EVENING STARS IN AUGUST - The Big Dipper is easily viewed in
the North Northwest with its two bottom stars pointing right and upwards
towards the North Star. The handle of the Big Dipper can be extended
leftward to the bright golden star Arcturus. High in the East is the
white-blue star Vega, matching Arcturus in brightness. Vega is the top star
of the Summer Triangle. On moonless nights, the gentle glow of the Milky Way
can be seen running through the lower part of the Triangle. To the right of
the bright planet Jupiter is the Scorpion, whose brighter stars form a
letter "J", low in the South.
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