May 15th, 2018 – Dark Sky Discovery with Carmen

Kitt Peak Nightly Observing Program

Splendors of the Universe on YOUR Night!

Many pictures are links to larger versions.
Click here for the “Best images of the OTOP” Gallery and more information.

Coma Berenices

The name Coma Berenices means “Berenice’s Hair”. This is the only modern constellation named for a person who really lived, as opposed to a purely mythological character. Queen Berenices II of Egypt lived 2260 years ago, and as legend has it, she sacrificed her hair to the goddess Aphrodite, in exchange that her husband should return safely from war. When the hair went missing form the temple, it was said that it had been carried to the heavens, where it forevermore resides.

Leo

Leo is a fairly well known constellation, because the plane of the Solar System runs through it. Such constellations are called Zodiac Constellations. Leo has some notable, bright stars, in it to boot. The brightest of these, Regulus is at the bottom of a series of stars arrayed in the form of a sickle, or a backwards question mark. This constellation does look more or less like the side profile of a lion lying on the ground, with its head up.

M51 Whirlpool Galaxy

M51, the Whirlpool Galaxy, gets its name from its bright and prominent spiral arms. It lies at a distance of 23 million light-years away. It also has a smaller, companion galaxy (NGC 5195). The two galaxies are one of the best examples of interacting galaxies.    

M65 (in Leo Triplet)

M65 is a spiral galaxy about 35 million light-years away. With a diameter of only 60,000 light-years, It is smaller than the Milky Way. It is one of three galaxies in a small group called the Leo Triplet.    

M66 (in Leo Triplet)

M66 is a spiral galaxy, and one of three galaxies in a trio of galaxies called the Leo Triplet. M66 is a stones throw (180,000 light-years) from M65.    

M81 Bode’s Galaxy

M81 is a small spiral galaxy, 12 million lightyears away. It is a disk of 50 billion solar masses, only a stone’s throw (150,000 lightyears) from M82.

M82 Cigar Galaxy

M82, the “Cigar Galaxy” is an edge-on spiral galaxy, 12 million light-years away, and perhaps 37,000 light-years across. There are vast gas clouds in this galaxy, where stars are being born at an incredible rate.    

NGC 3628 (in Leo Triplet)

NGC 3628, also known as Sarah’s Galaxy. Is an unbarred spiral galaxy about 35 million light-years away in the constellation Leo. It was discovered by William Herschel in 1784. It has an approximately 300,000 light-years long tidal tail. NGC 3628 along with M65 and M66 form the famous Leo Triplet.

M13 Hercules Globular

M13, the “Great Globular Cluster in Hercules” was first discovered by Edmund Halley in 1714, and later catalogued by Charles Messier in 1764. It contains 300,000 stars, and is 22,000 light-years away. Light would need over a century to traverse its diameter.

M3

M3 is a globular cluster with a half of a million stars. It orbits the core of our Milky Way Galaxy almost perpendicular to the galactic disk. It is currently 33,900 light-years away, and approaching our Solar System at 100 miles per second.

Iridium Flare

From the late 1990’s to the early 2000’s Motorola launched a total of 95 communication satellites into orbit around Earth. Today, they are most noted not for their intended purpose, but instead for their ability to reflect sunlight. Shiny antennae briefly (for 10-20 seconds) reflect sunlight to make these objects almost as bright as the moon.

Meteors

Quick streaks of light in the sky called meteors, shooting stars, or falling stars are not stars at all: they are small bits of rock or iron that heat up, glow, and vaporize upon entering the Earth’s atmosphere. When the Earth encounters a clump of many of these particles, we see a meteor shower lasting hours or days.

Satellites

Human technology! There are almost 500 of these in Low Earth Orbit (we can’t see the higher ones). We see these little “moving stars” because they reflect sunlight.

The Green Flash

What we call “The Green Flash” is not so much a flash as a flicker of green color, seen on the top of the sun as it sets (or rises). This rare event needs just the right atmospheric conditions.

Coma Berenices

Coma Berenices: “Berenice’s Hair,” a giant Y-shaped open star cluster. It is only 280 lightyears away and appears a bit east of Leo.

M35

M35 is an open star cluster of over 300 stars. It lies at a distance of 2,800 light-years from Earth, near the foot of Castor, one of the Gemini twins. Tiny nearby cluster NGC 2158 is in the same field of view.

M36 Pinwheel Cluster

M36, the “Pinwheel Cluster” is one of three bright open star clusters in the constellation of Auriga. It lies about 4,100 light-years away, and is about 14 light-years across, contains about 60 stars, and is about 25 million years old.    

M37 Salt & Pepper Cluster

M37, the “Salt and Pepper Cluster” is one of three bright open star clusters in the constellation Auriga. It is the brightest and richest of the three. It lies about 4,500 light-years away, contains about 150 stars, has a diameter of about 25 light-years, and is 450 million years old.   

M44 The Beehive

M44, the “Beehive Cluster,” and also known as “Praesepe,” is a large, bright, diffuse open star cluster containing about 400 stars. It lies fairly close, at a distance of under 600 light-years.

M57 (Ring Nebula)

M57: The Ring Nebula. This remnant of a dead star looks exactly as it’s name says – a ring or doughnut shape cloud of gas. The nebula is about 2.6 lightyears across and lies about 2,300 lightyears away.

NGC 3242 (Ghost of Jupiter)

NGC 3242: The “Ghost of Jupiter.” A shroud of gas puffed off by a dying star, 1,400 lightyears away. The gas is illuminated by the collapsed, hot, blue core (a white dwarf). Did it look blue to you?

Jupiter

Jupiter is the largest planet in the Solar System, a “gas giant” 11 Earth-diameters across. Its atmosphere contains the Great Red Spot, a long-lived storm 2-3 times the size of the Earth. The 4 large Galilean satellites and at least 63 smaller moons orbit Jupiter.

Venus

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.

Castor (α Gem)

Castor (α Geminorum) is a multiple star in the constellation Gemini, the twins. Through the telescope, a close pair of bright white stars and a more distant red dwarf companion are visible, but these are each spectroscopic binaries, making Castor a six-star system. Castor is about 50 light-years away. The bright components orbit each other with a period of about 450 years.

Cor Caroli (α CVn)

The star Cor Caroli (α Canum Venaticorum) or “Heart of Charles” was named after King Charles I or II of England. These stars are about 110 light-years away, but it is unknown if they are actually orbiting around each other.

Your Telescope Operator and Guide. Thank you for joining me this evening! See you soon!!

The web page for the program in which you just participated is at
Nightly Observing Program. Most of the above images were taken as
part of
the Overnight Telescope Observing Program. For more information on this unique experience please visit Overnight Telescope Observing Program.
Copyright © 2018 Kitt Peak Visitor Center


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