Your Telescope Operator and Guide

Дата канвертавання24.04.2016
Памер15.15 Kb.

Ross Dubois

Your Telescope Operator and Guide.

Thank you for joining me this evening! I hope to see you again sometime on Kitt Peak!

Algieba (γ Leonis) is a binary star in the mane of Leo, the lion. These two golden-yellow giant stars are about 23 and 10 times the diameter of the Sun, and are about 126 light-years away.

Iota (ι) Cancri is a binary star in the constellation Cancer, the crab. The brighter star is a pale yellow giant, and the fainter star is smaller and bluish-white. This pair is about 300 light-years away and the stars are almost 3000 astronomical units apart.

M67: This little open cluster appears near its larger buddy, the Beehive Cluster (actually, they are the same size, but M67 is four times farther away). M67 is truly ancient; its stars are ten billion years old.

M44: The "Beehive Cluster." A large, bright, diffuse open star cluster containing about 400 stars. It lies fairly close at a distance of almost 600 lightyears away. Another nickname: "Praesepe."

M35: An open star cluster of over 300 stars. It lies at a distance of 2,800 ly, near the foot of Castor, one of the Gemini twins. Could you see the tiny cluster NGC 2158 nearby?

M3: This globular cluster has a half-million stars, and orbits the core of our Milky Way almost perpendicular to the disk. It is approaching our Solar System at 100 miles per second.

Omega Centauri: One of the biggest and closest globular star clusters, seen very low to the south from Kitt Peak. This ball of a half million stars is 17,000 lightyears away.

M65 & M66

M65: A spiral galaxy lying about 35 million ly away. With only 50 billion suns, it is smaller than the Milky Way. It is one of three galaxies in a small group.

M66: A spiral galaxy, one of three closely related galaxies (M65 and NGC 3628 are the others). M66 is a stones throw (180,000 lightyears) from M65.

M51: The Whirlpool Galaxy. This galaxy gets its name from its bright and prominent spiral arms. It lies at a distance of 38 million light years. It also has a smaller, companion galaxy (NGC 5195). The two galaxies are in the process of a massive collision in space.

The same side of the Moon always faces Earth because the lunar periods of rotation and revolution are the same. The surface of the moon is covered with impact craters and lava-filled basins. The Moon is about a fourth of Earth's diameter and is about 30 Earth-diameters away.

Tonight we saw the moon in front of open cluster M35

Venus, the second planet, is the brightest natural object in the sky other than the Sun and Moon and is often erroneously called the “morning star” or “evening star.” It is completely wrapped in sulfuric acid clouds and its surface is hot enough to melt lead.
We saw this bright as we watched the sunset.

Saturn, the second-largest planet in the Solar System, is known for its showy but thin rings made of ice chunks as small as dust and as large as buildings. Its largest moon, Titan, has an atmosphere and hydrocarbon lakes; at least 60 smaller moons orbit Saturn.

The web page for the program in which you just participated is

Most of the above images were taken as part of the all-night observing program.

For more information on this unique experience please visit:

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