APRIL 2018 OBSERVING LIST

22 TELESCOPE OBJECTS


EARTH’S MOON

April 15-30


1 PLANET

Venus


8 GALAXIES

M 51 Whirlpool (Ursa Major)

M 65, M 66 & NGC 3628 Triplet (Leo)

M 81 Bode’s (Ursa Major )

M 82 Bode’s) (Ursa Major)

M 104 Sombrero (Corvus)

M 108 (Ursa Major)


1 BINARY STAR SYSTEM

Alcor and Mizar (Ursa Major)


1 PLANETARY NEBULA

Owl (Ursa Major)


2 BRIGHT NEBULAE

M 1 Crab (Taurus)

M 42 Orion (Orion)


1 GLOBULAR STAR CLUSTER

M 79 (Lepus)


8 OPEN STAR CLUSTERS

Caldwell 41 Hyades (Taurus) (Bare Eye)

M 38 Starfish (Auriga)

M 41 Heart of the Dog (Canis Major)

M 44 Beehive (Cancer)

M 45 Pleiades (Taurus)

NGC 869 Double Cluster (Perseus)

NGC 884 Double Cluster (Perseus)

NGC 1976 Trapezuim (Orion)


BARE EYE OBJECTS

Satellites and Meteor Showers!


                                                    GLOSSARY

FIRST MAGNITUDE STARS - First magnitude stars are the 20 brightest stars visible in the night sky from Planet Earth. Hipparchos, introduced the magnitude scale in the 1st century B.C..

ASTERISMS - An asterism is an informal pattern of stars recognized in the Earth's night sky. It may be part of an official constellation or it may be composed of stars from more than one constellation.

CONSTELLATIONS - A constellation is a specific area of the celestial sphere as defined by the International Astronomical Union (IAU). There are 88 officially recognized constellations, covering the entire sky.

GALAXIES

A galaxy is a gravitationally bound system of starsstellar remnantsinterstellar gasdust, and dark matter The word galaxy is derived from the Greek galaxias (γαλαξίας), literally "milky," a reference to The Milky Way. Galaxies range in size from dwarfs with just a few thousand stars to giants with one hundred trillion stars, each orbiting their galaxy's own center of mass.

NEBULA

A nebula is a cloud formed of gas and dust from an exploded star. New star clusters form from the clouds of gas and dust, and these illuminate the cloud to form the visible nebula.

PLANETARY NEBULA

A planetary nebula is an emission nebula consisting of an expanding glowing shell of ionized gas ejected from old red giant stars late in their lives. The shells of gas are illuminated by a white dwarf carbon star that collapsed in less than millionth of a second.

 GLOBULAR STAR CLUSTERS

A globular cluster is a spherical collection of stars that orbits a galactic core as a satellite of a parent galaxy. Globular clusters are very tightly bound by gravity, which gives them their spherical shapes and relatively high stellar densities toward their centers.

OPEN STAR CLUSTERS

An open cluster is a group of up to a few thousand stars that were formed from the same giant molecular cloud and have roughly the same age.

MULTIPLE STAR SYSTEMS

A multiple star system consists of two or more stars orbiting around their common center. Also known as a Binary Star System

39 LASER POINTER OBJECTS

 

12 FIRST MAGNITUDE STARS

Aldebaran (Taurus)

Arcturus (Bootes)

Betelgeuse (Orion)

Bellatrix (Orion)

Capella (Auriga the Charioteer)

Canopus (Carinae the Keel)

Pollux (Gemini)

Procyon (Canis Minor)

Regulus (Leo)

Rigel (Orion)

Sirius (Canis Major)

Spica (Virgo) rising


12 ASTERISMS

Belt (Orion)

Big Dipper (Ursa Major (Rising)

Great Square (Pegasus)

Guardians of the Pole (Ursa Minor)

Milk Dipper (Orion)

Kite (Bootes)

Little Dipper (Ursa Minor)

Shield (Orion)

Sickle (Leo)

Sword (Orion)

Winter Circle

Winter Triangle


15 CONSTELLATIONS

Auriga (Charioteer)

Bootes (Herd and Herdsman)

Cancer (Crab)

Canis Major (Big Dog)

Canis Minor (Little Dog)

Columba (Dove)

Corvus (Crow) rising

Hydra (Water Snake) 

Leo (Lion) 

Orion (Hunter) 

Perseus (Hero)

Taurus (The Bull)

Ursa Major (Big Bear)

Ursa Minor (Little Bear)

Virgo (Maiden) rising