For February, the Moon
will pass just north of Saturn in the predawn
sky on Groundhog Day. New moon is February
4th. The waxing crescent is six degrees south
of Mars in the SW evening sky on February
10th, and the moon is first quarter on the
12th. The Full moon is February 19th. The last
quarter is February 26th, and it passes two
degrees north of Jupiter on the 27th.
Mercury peaks out in
evening twilight at the end of the month,
reaching greatest eastern elongation of 18
degrees from Sun on February 26th. Venus
dominates the dawn, moving eastward away from
Jupiter, which it passed on January 22nd. Both
rise about two hours before dawn. Mars is the
only evening planet, visible in the SW after
sunset but fading as the earth leaves it
behind. We lose it into the Sun’s glare by
midyear. Saturn is back in the dawn sky,
rising about an hour before sunrise in the SE.
The constellation
Cassiopeia makes a striking W in the NW. She
contains many nice star clusters for binocular
users in her outer arm of our Milky Way,
extending to the NE now.
Cassiopeia’s daughter,
Andromeda, starts with the NE corner star of
Pegasus’’ Square, and goes NE with two more
bright stars in a row. It is from the middle
star, beta Andromeda, that we proceed about a
quarter the way to the top star in the W of
Cassiopeia, and look for a faint blur with the
naked eye. M-31, the Andromeda Galaxy, is the
most distant object visible with the naked
eye, lying about 2.5 million light years
distant.
Overhead is
Andromeda’s hero, Perseus. Between him and
Cassiopeia is the fine Double Cluster, faintly
visible with the naked eye and two fine
binocular objects in the same field. Perseus
contains the famed eclipsing binary star Algol,
where the Arabs imagined the eye of the gorgon
Medusa would lie. It fades to a third its
normal brightness for six out of every 70
hours, as a larger but cooler orange giant
covers about 80% of the smaller but hotter and
thus brighter companion as seen from Earth.
At Perseus’ feet for
the famed Pleiades cluster; they lie about 400
light years distant, and over 250 stars are
members of this fine group. East of the seven
sisters is the V of stars marking the face of
Taurus the Bull, with bright orange Aldebaran
as his eye. The V of stars is the Hyades
cluster, older than the blue Pleiades, but
about half their distance.
Yellow Capella, a
giant star the same temperature and color as
our much smaller Sun, dominates the overhead
sky. It is part of the pentagon on stars
making up Auriga, the Charioteer (think Ben
Hur). Several nice binocular Messier open
clusters are found in the winter milky way
here. East of Auriga, the twins, Castor and
Pollux highlight the Gemini. UWF alumni can
associate the pair with Jason and the Golden
Fleece legend, for they were the first two
Argonauts to sign up on his crew of
adventurers.
South of Gemini, Orion
is the most familiar winter constellation,
dominating the eastern sky at dusk. The
reddish supergiant Betelguese marks his
eastern shoulder, while blue-white supergiant
Rigel stands opposite on his west knee. Just
south of the belt, hanging like a sword
downward, is M-42, the Great Nebula of Orion,
an outstanding binocular and telescopic
stellar nursery. The bright diamond of four
stars that light it up are the trapezium
cluster, one of the finest sights in a
telescope.
Just east of
Betelguese is the fine binocular cluster NGC
2244. But the much fainter Rosette Nebula that
it lies in the center of requires bigger
scopes or astrophotography. Our feature shot
for Valentine’s Day is this fine looks at this
young cluster being born from the inside out.
In the east rise the
hunter’s two faithful companions, Canis major
and minor. Procyon is the bright star in the
little dog, and rises before Sirius, the
brightest star in the sky. Midway between them
is the fine Rosette Nebula, a star nursery of
gas and dust including the nice open cluster
NGC 2244, easily found in binoculars. Several
other nice clusters for binoculars are also
plotted on your February sky map printout, be
sure to check them out some clear, crisp
winter evening.
Sirius dominates the
SE sky by 7 PM, and as it rises, the turbulent
winter air causes it to sparkle with shafts of
spectral fire. Beautiful as the twinkling
appears to the naked eye, for astronomers this
means the image is blurry; only in space can
we truly see "clearly now". At 8 light years
distance, Sirius is the closest star we can
easily see with the naked eye from West
Florida.
When Sirius is
highest, along our southern horizon look for
the second brightest star, Canopus, getting
just above the horizon and sparkling like an
exquisite diamond as the turbulent winter air
twists and turns this shaft of starlight,
after a trip of about 200 years!
To the northeast, a
reminder that spring is coming; look for the
bowl of the Big Dipper to rise, with the top
two stars, the pointers, giving you a line to
find Polaris, the Pole Star. But if you take
the pointers south, you are guided instead to
the head of Leo the Lion rising in the east,
looking much like the profile of the famed
Sphinx. The bright star at the Lion’s heart is
Regulus, the "regal star". Fitting for our
cosmic king of beasts, whose rising at the end
of this month means March indeed will be
coming in "like a lion".