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.
- 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
Among the modern constellations it is unique in being split into two pieces, Serpens Caput (representing the head of the snake) to the west and Serpens Cauda (representing the tail) to the east. Between these two pieces lies the constellation of Ophiuchus, the serpent holder.
Only one of the stars in Serpens is brighter than third magnitude, so the constellation is not easy to perceive. α Serpentis, named Unukalhai, is in the head part. δ Serpentis, also in the head, is a double star 210 light-years from Earth. θ Serpentis, in the tail, is also double.
Serpens is the snake being grasped by Ophiuchus, the Snake-Handler, and is thus very closely associated with it. Both were listed as constellations by Ptolemy. Originally, Serpens and Ophiuchus were considered a single Snake-Holder constellation, out of which developed an associated myth of the founding of medicine.
Notable Objects in Serpens
Messier 5, a globular cluster positioned approximately 8° southwest of α Serpentis is barely visible to the naked eye under good conditions, but visible with a small telescope.
The Eagle Nebula and its associated star cluster, Messier 16 are easier targets. The Eagle nebula is also the region where the famous Pillars of Creation were discovered.
Photos of Serpens
I have no photos of Serpens 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
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