ABOUT THE STARS 
John N's web site for Astronomy and Meteorology
ABOUT THE STARS
Positions of stars, planets and other celestial bodies. Meteorshowers, etc.
The skymaps above for Amsterdam are also usable for other locations with sort like northern latitude, such as Moscow, London or New York, for local midnight there. The long blue areas on both pictures show the area of our milky way, only visible in areas with no or sparely night-light pollution (or moon).
These skymaps are made with the computer program Skyglobe. Free for download as shareware Planetarium Skyglobe (DOS version 3.6) by www.sidewalkastronomy.com. This older DOS program still works under Windows XP but not under Vista.
Make your own skymap online with Fourmilab with stars, moon and planets for any time and place on earth.
You can choose from the list for a nearby city, world wide. Also you can set your own city for latitude and longitude, if you know these coordinates.
The summer sky is dominated by three brilliant stars set in a large triangle. This is called the Summer Triangle. Each of the three stars in the Summer Triangle belongs to a separate constellation. Vega in Lyra, Deneb in Cygnus and Altaïr in Aquila. The Milky Way crosses the Summer Triangle.
The autumn sky is dominated by four brilliant stars. The Autumn Quadrangle is formed by the four brightest stars of the constellation Pegasus.
The winter sky is dominated by six brilliant stars. The Winter Hexagon is formed by Rigel in Orion, Sirius in Canis Major, Procyon in Canis Minor, Pollux and Castor in Gemini, Capella in Auriga and Aldebaran in Taurus.
The Spring Trapezium is an irregular square at the sky formed by some bright stars of constellation Leo. This constellation stands in the spring high in the southern sky.
Sky calendar and Sky charts on the site of Space.com - Nightsky. The used times are mostly in world time UT (Universal Time).
Sometimes also Eastern Standard Time (EST=UT-5) or Eastern Daylight Time (EDT=UT-4) is used. Take then a look at Our Atomic Time Service with clocks for New York and other world cities.
The circumference plays the role of the horizon and the center of the circle the zenith (point straight above your head). The applet gives a blue color when the sun is not yet under the horizon and gives a black color in the other case.
Mercury and Venus are inner planets and are to find always close to the sun. They are called morning stars, if they appear just before or after sunrise and evening stars, if they appear just before or after sunset. Only the planets Mercury, Venus, Mars, Jupiter and Saturn are visible to the naked eye. Uranus, Neptune and Pluto can only be found with a binocular or telescope.
For other locations and timezones see the next passage or visit my webpage: The clocks of Amsterdam and other world cities.
All the times are derived from your computer time. Set your computer now on the right time via Our Atomic Time Service.
© Copyright of the Java scripts for these clocks: John N's Web.
The applet comes from the web site Brunch Boy Design (also available for your own web site).
See also: Earth and Moon Viewer from the web site Fourmilab with diverse interactive sunlight maps for earth view.
See also: Sun, moon and earth applet from Physics and astronomy with interactive map of the earth now in sunlight.
Shower Radiant and direction Morning's maximum Hourly rate Quadrantids Draco (NE) 3, 4 Jan. 100-120 Lyrids Lyra (E) 22 Apr. 10-20 Eta Aquarids Aquarius (E) 5 May 40-60 Delta Aquarids Aquarius (S) 28, 29 July 15-20 Perseids Perseus (NE) 10, 11, 12 Aug. 50-100 Orionids Orion (SE) 21 Oct. 10-20 Leonids Leo (E) 16, 17 Nov. 10-15 Geminids Gemini (S) 13, 14 Dec. 100-120 * Moonlight will wash out the fainter meteors in these showers. Radiant is the area where the meteors come from. The showers are seen several days around the mentioned day of morning's maximun. The morning's maximum rounds our planet just for sunrise. It concerns here yearly showers with nearly the same data each year. More about this ...!
For the USNO rise, transit and set times of celestial objects, click the logo.
Needed data:
longitude east 5 degrees, latitude north 52 degrees, timezone 1 hour east of Greenwich, location Netherlands for wintertime.
Timezone 2 hour east of Greenwich for summertime.
Download the free computerprogram Astroclock (Dutch or English DOS version) of the author of this web site. This older DOS program still works under Windows XP but not under Vista. More about this ...!
Sun
Mercury
Venus
Earth
Moon
Mars
Jupiter
Saturn
Uranus
Neptune
Pluto
See the next passage or click here to find your constellation!
Constellation Tropical Zodiac Season Birthstone Ram - Aries March 21 - April 20 First spring month Diamond Bull - Taurus April 20 - May 21 Second spring month Emerald Twins - Gemini May 21 - June 22 Third spring month Alexandrite Crab - Cancer June 22 - July 23 First summer month Pearl Lion - Leo July 23 - August 23 Second summer month Peridot, Ruby Virgin - Virgo August 23 - September 23 Third summer month Sapphire Scale or Balance - Libra September 23 - 23 October First autumn month Opal Scorpion - Scorpio October 23 - November 22 Second autumn month Topaz Archer - Sagittarius November 22 - December 22 Third autumn month Turquoise Goat - Capricornus December 22 - January 20 First winter month Garnet Water-Carrier- Aquarius January 20 - February 10 Second winter month Amethyst Fish - Pisces February 10 - March 21 Third winter month Aquamarine
More about outer space on this web site
Realm of the Nebulae | Journey through the universe
The realm of the Sun | Stars and planets
About the Moon | Sun and Moon eclipses
Binoculars and telescopes | Space and time
International agency for travel and vacation
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