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The kingdom’s frontier

Toni Fabiani Méndez from Àger, Lleida, Spain

The southeastern border of the constellation Cepheus the King is rich in deep-sky objects. Swathes of hydrogen, oxygen, and sulfur emission surround nebulae like the Bubble (NGC 7635), the Wizard (NGC 7380), and the Elephant Trunk in IC 1396. The imager compiled 123 hours of exposure in the Hubble palette through a 135mm f/2.8 lens.