![A Roadmap to the Stars](/images/new-backgrounds/101964/10196491x1.webp)
A Roadmap to the Stars
The night sky is filled with wonder and intrigue. You too can enjoy exploring the universe simply by following a few pointers on a roadmap to the stars.
First, find the Big Dipper which is part of the constellation Ursa Major. The Big Dipper is usually easy to locate year round in North America.
Extending directly out from the far side of the Big Dipper’s cup is the constellation Orion. One of the most exquisite areas of the winter sky, Orion is distinguished by Orion’s belt, which is marked by three stars in a row. The Orion Nebula is located South of the belt and is one of the most observed
Rigel
|
|
| Orion |
|
|
| Betelgeuse |
Andromeda |
|
| |
|
|
| Gemini |
|
|
| Pollux |
|
|
| Castor |
Pegasus |
| Polaris | “Sickle” |
Deneb |
| Regulus | |
| Leo | ||
“Summer | Cygnus |
| |
Triangle” |
| “Big Dipper” | |
|
| ||
| Vega |
| Boötes |
Altair | Lyra |
| |
| Arcturus | ||
|
|
|
Aquila
Virgo
Spica
Antares
Scorpius
Fig. 37: Roadmap to the stars.
Extending from the “pointer stars” of the
Big Dipper’s cup is Polaris, the North Star. Extending from Polaris is the Great Square shared by the constellations Pegasus and Andromeda.
The Summer Triangle is a notable region in the sky to the left of the handle of the Big Dipper. The triangle is made up of three very bright stars: Vega, Deneb, and Altair.
By drawing an imaginary line outward from the handle of the Big Dipper, you reach the southern constellation “Scorpius.” Scorpius curves to the left like the tail of a scorpion in the sky, or like letter “J.”
Amateur astronomers commonly use the phrase “Arc to Arcturus and spike to Spica” to refer to the area directly off the arc in the handle of the Big Dipper. Follow the arc to Arcturus, the second brightest star in the Northern Hemisphere, then spike down to Spica, the 16th brightest star in the sky.
Star Locator
The chart below lists bright stars with their R.A. and Dec coordinates, along with the Northern Hemisphere season when these stars are prominent in the night sky. This list aids the observer to find alignment stars at various times of the year. For example, if it is a midsummer evening in the Northern Hemisphere, Deneb in the constellation Cygnus would be an excellent alignment star, while Betelgeuse could not be used because it is in the winter constellation Orion and thus, below the horizon.
Season | Star Name | Constellation | R.A. | Dec |
Spring | Arcturus | Bootes | 14h16m | 19° 11" |
Spring | Regulus | Leo | 10h09m | 11° 58" |
Spring | Spica | Virgo | 13h25m | |
|
|
|
|
|
Summer | Vega | Lyra | 18h37m | 38° 47" |
Summer | Deneb | Cygnus | 20h41m | 45° 17" |
Summer | Altair | Aquila | 19h51m | 08° 52" |
Summer | Antares | Scorpius | 16h30m | |
|
|
|
|
|
Fall | Markab | Pegasus | 23h05m | 15° 12" |
Fall | Fomalhaut | Pisces Austrinus | s22h58m | |
Fall | Mira | Cetus | 02h19m | |
|
|
|
|
|
Winter | Rigel | Orion | 05h15m | |
Winter | Betelgeuse | Orion | 05h55m | 07° 25" |
Winter | Sirius | Canis Major | 06h45m | |
Winter | Aldebaran | Taurus | 04h35m | 16° 31" |
page 46