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| About Sky Maps | Northern Hemisphere | Southern Hemisphere | Celestial Notes | Celestial Events Calendar | Additional Information |
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Scientific
Frontline®
Sky
Maps are produced using
Cartes du
Ciel Sky Charts Version 3 beta 0.1.4
Northern Hemisphere uses Oklahoma
City as the observation point. Southern Hemisphere uses Rio de
Janeiro as the observation point
unless
otherwise indicated. All times are UT Evening Twilight
Astronomical. The Sky Maps
will be updated daily for the following day.
They
are a close representation of what you would see in the sky for
this time period. Yet slight variation could be possible
depending on your exact location. All
maps are using Alt/Az
Coordinate System, unless
otherwise indicated.
More
Information Bookmark
Custom Sky Maps available by request. Use the contact page and send us the time, date, city you live in. Looking for a particular object just let us know. Request should be for at least two days in advance. |
| The Following Sky Maps are for May 13, 2008 – UT Evening Twilight Astronomical |
| Northern Hemisphere |
| View North | View South |
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| View East | View West |
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| Southern Hemisphere |
| View North | View South |
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| View East | View West |
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| Celestial Notes for May 2008 |
| As the nights grow warmer, they also grow shorter, leaving less opportunity to view the night sky before bedtime. Fortunately, there are quite a few nice sights right at nightfall. Mars is high in the west, quite near the twin stars of Gemini. Mercury puts in one of its best appearances of the year, particularly when it teams up with the Moon on the 5th. And the planet Saturn remains within a whisker’s width of Regulus, the leading star of Leo, the lion. All are in good view by the time darkness settles. |
| Upcoming Celestial Events |
| May 2008 |
| Celestial Events maps are produced by Scientific Frontline® using the ESO VirGo® 1.3.1 program all Celestial Events maps are using Alt/Az Coordinate System and Oklahoma City (Northern Hemisphere) as the observation point |
| Sunday | Monday | Tuesday | Wednesday | Thursday | Friday | Saturday |
| 27 | 28 | 29 | 30 | 01 | 02 MAP | MAP Mars and the twins of Gemini form a straight, almost equally spaced line high in the west at nightfall. Mars is at the left end of the line, Castor at the right, with Pollux in the middle. | 03 MAP | MAP Saturn is holding still against the background of stars, near Regulus, the brightest star of Leo. They are high in the south at nightfall. |
| 04 | 05 | 06 MAP | MAP The planet Mercury puts in one of its best appearances of the year, just to the upper left of the Moon, low in the northwest shortly after sunset. | 07 | 08 | 09 MAP | MAP The Moon, Mars, and Gemini are high in the west at nightfall. Mars is to the upper left of the Moon on the 9th, with Pollux and Castor to lower right of Mars. | 10 MAP | MAP The Moon, Mars, and Gemini are high in the west at nightfall. The Moon will have moved left of Pollux and Castor on the 10th. |
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12
MAP
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Saturn
and Regulus are to the upper left of the Moon at nightfall.
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13 | 14 | 15 | 16 MAP | MAP Spica, the brightest star of Virgo, is just to the lower left of the Moon at nightfall. | 17 |
| 18 | 19 | 20 MAP | MAP Antares, the “heart” of Scorpius, stands upper left above the Moon as they climb into view in late evening. | 21 | 22 | 23 |
24
MAP
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Bright,
cream-colored Jupiter is to the upper right of the Moon as they
clear the horizon on the morning of the 24th. It is farther to
the lower right of the Moon on the 25th.
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25
MAP
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Bright,
cream-colored Jupiter is to the lower right of the Moon on the
25th.
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26 | 27 | 28 | 29 | 30 | 31 |
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| Information |
| Alt/Az Coordinate System. The Alt/Az Coordinate System. is a celestial coordinate system that uses the observer's local horizon as the fundamental plane. This conveniently divides the sky into the upper hemisphere that you can see, and the lower hemisphere that you cannot (because the Earth is in the way). The pole of the upper hemisphere is called the zenith. The pole of the lower hemisphere is called the nadir. Alt/Az Coordinate are: * altitude (Alt), sometimes referred to as elevation, that is the angle between the object and the observer's local horizon. * azimuth (Az), that is the angle of the object around the horizon, usually measured from the north point towards the east. In former times, it was common to refer to azimuth from the south, as it was then zero at the same time the hour angle of a star was zero. This assumes, however, that the star (upper) culminates in the south, which is only true for most stars in the Northern Hemisphere. The Alt/Az Coordinate System. is sometimes also called the az/el or Horizontal Coordinate System. UT Evening Twilight Astronomical Astronomical Twilight begins when the Sun's center is 18 degrees below the horizon. Civil Twilight begins when the Sun's center is 6 degrees below the horizon; Nautical Twilight begins when the Sun's center is 12 degrees below the horizon. |
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