Binoculars come in many shapes and forms, a great size for stargazing is 7 x 50 or 10 x 50. The first number is a measure of power, it means how much these binoculars magnify, in this case the 7 and the 10. The second number is the diameter of the objective (the big lenses at the front) in millimetres, in this case the 50.
We really like binoculars, they are favourite aids to observing the night sky because they are light, you can take them easily with you on trips, they don’t really require assembly and disassembly, no polar alignment, and visually are better than telescopes!
With a tripod attached they are truly magnificent. Comets and some open star clusters are sometimes better observed with binoculars. We have two eyes, so binocular views are more spectacular in many regards than telescopic, because our brains interpret what we see, binoculars give depth of view as they engage both eyes in the process.
There are a few great objects that you could admire in binoculars. On the ecliptic, M44 – the Praesepe is an open cluster in Cancer. Known as the beehive, the open cluster swarms with stars. It’s really fuzzy when you look at it with the naked eye and binoculars reveal a beautiful lace of stars. Praesepes are as far as 577 light years and estimated to be about 730 million years old with an average magnitude of 3.5. Also in Cancer, M37, is another open cluster, one of the oldest known, almost 3.2 billion years.
Close to the area south of the triangle that marks Leo’s hips…M65, M66 and NGC 3628, which will be visible depending on the size of your binoculars they are also known as the “Leo Triplet”. Also in Leo, M105 is an elliptical galaxy. Last but not least M96 another galaxy in Leo lies at about 35 million light years away.
You can get a map and look for all these objects. Or, if everything else fails, simply take your binoculars and swipe the Milky Way from one edge to the other. You might not figure out exactly which objects you are looking at but you would definitely find amazing sights, especially in the region close to Carina. You will find there IC 2602, NGC 3114, NGC 353, NGC 2516 that are all open clusters then in Crux NGC 4755 which is another open cluster, NGC 2451 in Puppis, and IC 2391 in Vela.
Lower down, Omega Centauri, is a globular cluster in Centaurus and in Scorpius, there are the Butterfly Cluster, M7 open cluster and NGC 6231 open cluster.