BBC Sky at Night

BINOCULAR TOUR

1. The Double Cluster

Half way between mag. 2.6 Ruchbah (Delta (δ) Cassiopeiae) and mag. +2.9 Gamma (γ) Cassiopeiae you will find a close pair of open clusters. In a rural sky, you can see them with your naked eye as a distinctly elongated smudge of

You’re reading a preview, subscribe to read more.

More from BBC Sky at Night

BBC Sky at Night1 min read
Travel Restrictions
You would expect that extremely energetic particles are hard to stop, but no. If a high-energy proton or electron collides with an atomic nucleus in Earth's atmosphere (or in interstellar space), the collision energy is converted into a whole load of
BBC Sky at Night5 min read
Sky-Watcher EQ-AL55i Pro Wi-Fi mount
∙ Price £779 ∙ Mount type Equatorial with Go-To ∙ Load capacity 10kg ∙ Slew speed Up to 4° per second ∙ Power input 12V DC ∙ Autoguider port ST4 ∙ Protocols SynScan, ASCOM via Wi-Fi or USB ∙ Weight 14.8kg ∙ Supplier Optical Vision Ltd ∙ Email info@op
BBC Sky at Night1 min read
The Biggest 3D Map Of The Universe Is Taking Shape
The Dark Energy Spectroscopic Instrument (DESI) is on a five-year quest to make the largest-ever 3D map of the Universe. Though only half-way through its mission, astronomers have used its first year of data to begin answering one of astronomy's bigg

Related Books & Audiobooks