- Tips for Getting Started in Astronomy
- Dark Eye Adaption - How We See In the Dark
- Light Pollution
- Using Star Charts and Measuring Distance
- Constellation Guide
- Binocular Astronomy
- Moon Watching - How to Observe the Moon
- Buying Your First Telescope
- Your First Night With Your First Telescope
- Sky Orientation through a Telescope
- Polar Alignment of an Equatorial Telescope Mount
- Useful Astronomy Filters for Astrophotography
Constellation guide to the 88 official constellations which divide up the sky. These constellations are used to help navigate the celestial sphere. The Constellations are patterns in the sky which have been to invented and have deep mythology behind them. Constellations cover massive areas in the sky and as such are very easy to find.
It is one of the 48 constellations listed by Ptolemy, also mentioned by Eudoxus (4th cent. B.C.) and Aratus (3rd cent. B.C.). and now also part of the list of 88 constellations acknowledged by the IAU. It lies roughly at the celestial equator. The alpha star, Altair, is a vertex of the Summer Triangle asterism.
Ptolemy cataloged nineteen stars jointly in this constellation and in the constellation Antinous, which was named in the reign of the emperor Hadrian (A.D. 117-138), but sometimes, and wrongly, attributed to Tycho Brahe, who cataloged twelve stars in Aquila and seven in Antinous; Hevelius determined twenty-three stars in the first, and nineteen in the second.
Aquila is the name of the eagle which carried the thunderbolts of Zeus and was sent by him to carry the shepherd boy Ganymede who he desired, represented by the neighboring Aquarius, to Mount Olympus where he became the wine-pourer for all the gods.
Notable Objects in Aquila
Eta Aquilae is one of the brightest Cepheid variables. It ranges in magnitude from 4.1 to magnitude 5.3 every 7.2 days. It is a supergiant star about 3000 times more luminous than the Sun and located 1200 light years from Earth.
57 Aquilae is a binary star easy to spot with binocolars or small telescope. Its two components shine at 6th magnitude and are separated by 36 arcseconds.
Photos of Aquila
I have no photos of Aquila yet.
Northern Circumpolar Constellations
These constellations can be viewed all year round in the Northern hemisphere as they move in a counterclockwise direction around the north celestial pole without setting or dipping below the horizon.
Northern Spring Constellations
These Northern constellations are best viewed around the spring months. The rest of the year the constellation will not rise during the night.
Northern Autumn Constellations
These Northern constellations are best viewed around the autumn months. The rest of the year the constellation will not rise during the night.
Last updated on: Wednesday 24th January 2018