maandag 26 oktober 2009

Halleys Comet, observed in April 1986 from Kruger National Park, South Africa

From the Kruger National Park, South Africa on the 4th April 1986 approximately 24:00hrs I've seen Halley's comet thru a simple wild-life binocular, placed on a tripod. It was like this image with the tail slanting up. A few days later he disappeared from the southern hemisphere for a period of almost 76 years.

Key facts, Orbits, Calander of events Halley's Comet:

It's very unusable for an object in the solar system, that Halley's orbit is retrograde; its orbits the sun in the opposite directions the planets, or clockwise from above the sun's north pole.

Reproduced without acknowledgement from "Halley's Comet", A daily guide for Southern Africa by Peter Mack and Sven Sperbund. Copyright Cederberg Absorvatory.

zaterdag 24 oktober 2009

My favorite objects: 1) Saturn

Saturn Astronomical symbol for Saturn

Saturn is my favorite object because this was the first planet I've observed with my telescope "Celestron Nexstar 4se, type Maksutof-Cassegrain. This observation took place, again, in South Africa during our holiday in may 2008, lodging at Sandhurst Safaris, located near the border of Botswana. I recognized Saturn easily with the planetary rings.

Saturn is the sixth planet from the Sun and the second largest planet in the Solar System, after Jupiter. Saturn, along with Jupiter, Uranus and Neptune, is classified as a gas giant.
Saturn is probably best known for its system of planetary rings, which makes it the most visually remarkable object in the solar system. They extend from 6 630 km to 120 700 km above Saturn's equator, average approximately 20 meters in thickness.

The size of Saturn in proportion to Earth.

Rotation time: 10:32 - 10:47 hours. Orbit 29,4 earth years.