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Zeta Aquilae marks the tip of the eagle's wing (or
its tail in some renditions).
The star is three binocular fields to the northwest of alpha: binoculars.
NGC 6709 is to the south-southwest, at the very edge of the viewing area. This is a loose star cluster of around 40 stars with the brightest being ninth-magnitude.
To the south of zeta -- about one binocular field -- is R Aquilae, a long-period variable with a period of about 284 days (it's been dropping in recent years, from well over 300 days), with a range of about 5.5 to 12. If the current period is accurate the star should attain its 2000 maximum in early June.
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