GK Persei, also known as Nova Persei 1901, is a cataclysmic variable star system located in the constellation Perseus. This celestial object is famous for its historical outburst in 1901 when it briefly became one of the brightest stars in the sky. The remnants of this event include a fascinating planetary nebula, shrouded in the surrounding interstellar material.

This remarkable image of GK Persei's hidden planetary nebula showcases the intricate details of its structure, achieved through an unprecedented integration time of 265 hours. This extensive observation period, the longest ever conducted on GK Persei, has unveiled the subtle nuances of the nebula's morphology, highlighting intricate filaments and regions of ionized gas.