The Sky Today on Friday, September 4: Get in a workout

The Dumbbell Nebula in Vulpecula is a superb goal for any telescope beneath this night’s darkish, moonless skies.

The Dumbbell Nebula (M27) in Vulpecula is a superb deep-sky goal for observers of any ability, together with learners. It seems tapered on the heart and wider on the ends, like its namesake.
Credit score: Jeremy Stanley (Flickr, CC BY-NC-SA 2.0)

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September 3: The Moon in Taurus

Final Quarter Moon happens at 3:51 A.M. EDT, leaving our night sky utterly darkish and excellent for seeking out fainter, deep-sky targets. 

Excessive within the southeastern sky two hours after sundown is the constellation Vulpecula, which sits simply to the precise of cross-shaped Cygnus the Swan. One in all Vulpecula’s most well-known inhabitants is M27, also called the Dumbbell Nebula. This planetary nebula, created by a dying Solar-like star, is thinner within the center and thicker on both finish, giving it the looks of a bowtie or — you guessed it — a dumbbell. 

The closest vivid star is definitely Gamma (γ) Sagittae, which shines at magnitude 3.5. From right here, the Dumbbell is only a brief hop 3.2° due north. Glowing at magnitude 7.4, M27 is likely one of the greatest planetaries within the sky, particularly for starting observers. It stretches about 8’ lengthy and almost 6’ at its widest. Via binoculars or any small telescope, you’ll see a grayish or greenish blob; give your eyes time to regulate, or strive looking of the nook of your eye to choose up on its pinched-in-the-middle form. Bumping up the magnification when you’ve bought a scope centered on it could assist as nicely, whereas a narrowband or OIII filter will additional enhance the view. 

The central star chargeable for the nebula, now a white dwarf, shines at thirteenth magnitude. Bigger scopes (10 inches or extra) ought to will let you spot it. 

Dawn: 6:30 A.M.
Sundown: 7:27 P.M.
Moonrise: 11:51 P.M.
Moonset: 2:59 P.M.
Moon Section: Waning crescent (41%)
*Occasions for dawn, sundown, moonrise, and moonset are given in native time from 40° N 90° W. The Moon’s illumination is given at 10 P.M. native time from the identical location. 

Alison Klesman is senior editor of Astronomy journal. She holds a Ph.D. in astronomy and has studied a wide range of matters, from minor planets to supermassive black holes.