April 19th, 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.

M42 The Orion Nebula

M42, the Orion Nebula is a region of star formation about 1,300 light-years away—the closest to our Solar System. It is roughly 30 light-years across, and contains enough material to make 2,000 stars the size of our sun.

M104 (Sombrero Galaxy)

M104: A spiral galaxy like the Milky Way, nicknamed the “Sombrero Galaxy” because the lane of dust in the disk looks like the brim of such a hat. It is about 50,000 lightyears across and about 29 million lightyears away.

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.

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.

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.

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.

M46

M46 is an open star cluster containing over 500 stars. It lies at a distance of 5,400 light-years, and is about 30 light-years across. A small, faint, grey disc that seems to be superimposed over the cluster is actually the remnant of a dead star—a planetary nebula known as NGC 2438. NGC 2438 only coincidentally lies along the same line of sight as M46. The cluster and planetary nebula are unrelated; the planetary nebula is about 2,500 light-years closer to the Earth.

NGC 2169 The 37 Cluster

NGC 2169 is an open star cluster in the constellation Orion. It was discovered by Giovanni Batista Hodierna before 1654 and discovered by William Herschel on October 15, 1784. NGC 2169 is at a distance of about 3,600 light-years away from Earth. It is nicknamed The 37 Cluster due to its striking resemblance to the numerals 37.    

M97 (Owl Nebula)

M97: The “Owl Nebula”. This planetary nebula gets its name from what looks like an owl’s head and specifically the “eyes” – two visibly darker areas within the cloud of matter expanding away from the central star.

NGC 2438 (in field with M46)

NGC 2438 is the glowing bubble of gas that was cast off by a single star that has died. At a distance of 2,900 light years away it is a foreground object superimposed upon the sparkling star cluster M46.

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.

Moon

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.

Hind’s Crimson Star (R Lep)

Hind’s Crimson Star (R Leporis), contains lots of carbon in its outer atmosphere, which dims and reddens its starlight. Changing amounts of carbon cause the star to vary in color and brightness, sometimes making it one of the reddest stars in the sky.

Winter Albireo

Two stars in Canis Major bear a striking resemblance to a pair of stars in Cygnus known as Albireo. Visible in the Northern Hemisphere summer, Albireo is a pair of stars that have very different surface temperatures, and therefore, noticably different colors. The same is try of the golden star 145 Canis Majoris, and it’s fainter, blue neighbor.

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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