Binocular Space Walk - Summer Southern Milky Way

A word about binocular observing

You don't need a telescope to observe the night sky. Everyone likes to just look up sometimes with the unaided eye. In a dark sky it's a spectacular view, which unfortunately is becoming harder to come by with our rampant light pollution and disregard for the value of seeing the Milky Way and millions of stars. 

Binoculars occupy a spot in between telescopes and the unaided eye. Most amateur astronomers have at least one pair of binoculars, because the view through binoculars differs so much from a telescopic view. For one thing, the field of view is much greater. Second, it requires almost no setup and expensive equipment, although you can pay a lot for high end binoculars. Third, binoculars are easy to pack and easy to point. And lastly, binoculars will show many more stars than the unaided eye, even in more light-polluted areas. 

Nikon AE 10x50

This Space Walk is designed for binoculars. A good size binocular for astronomy is the 10x50, which means it magnifies 10 times more than the unaided eye, and has 50mm objective lenses. This size is not too heavy to hand hold and still keep steady and not get too tired, although they do vary in weight. Some oft-recommended value-priced binoculars for astronomy are the Nikon 10x50 Action Extreme ATB (around $180) and the Oberwerk 10x50 Deluxe (around $200). I have the Meade Masterclass Pro ED 10x56. If these are not available or outside of your budget, try the Nikon Aculon A211 10x50 (around $120) or the Bushnell Legacy WP 10x50 (around $105). See a recent Cloudy Nights discussion on binoculars or another CN discussion for more options. If you will be observing with glasses, look for eye relief of at least 17mm, and preferably more.

The second piece of equipment is a reclining chair. I recommend getting a "zero gravity chair." This will allow you to lie back and observe even very high in the sky in comfort. See my article on building a binocular chair mount for a zero gravity chair mount to maximize your viewing experience.

This Space Walk takes you toward the center of the galaxy, covering some of the best objects in the constellations Sagittarius, Scorpius, Scutum, Serpens, and Ophiuchus. It includes a vertical swath of the sky that should allow you to view all the objects without moving your chair. You will need a good unobstructed view to the south. The darker the sky, the better, without the Moon in the sky, as even a crescent Moon will wash out the view a bit.

Link to the mp3 audio file. Download the file to the device you will be using to listen to it in the field.

Binocular Space Walk Among the Stars - Summer Southern Milky Way - audio

Chart to accompany the Binocular Space Walk. Review this prior to observing with your binoculars.

The objects and their locations within the various constellations. This view is for mid-northern latitudes, looking toward the south starting just above the horizon. North is up, west is to the right, and east is to the left. Note the outline of the Milky Way, which covers almost all of Scorpius and extends up and to the left through Sagittarius, Scutum, part of Serpens, and Aquila. 

Chart adapted from Cartes du Ciel, free sky charting software.