GALLERY 74 t BLUE BUBBLE p IN CARINA'S SHADOW Derek Santiago Abell 33, in Hydra, is nicknamed the Diamond Ring Nebula because of the 7th-magnitude star perched on this planetary nebula's outer rim at lower right. DETAILS: Celestron EdgeHD 9.25-inch Schmidt-Cassegrain telescope, QSI540 wsg CCD camera, and Astrodon O III and Hα filters. Total exposure: 7 hours. Darryn Lavery The star-forming region NGC 3324, at upper right, lies just 2° northwest of the far grander Carina Nebula, whose extended outer wisps dominate this view. DETAILS: Astro Systeme Austria 16N Newtonian astrograph and Apogee Aspen CG16070 CCD camera with O III, S II, and Hα filters. Total exposure: 55 minutes. N O V E M B E R 2 0 17 * S K Y & T E L E S C O P E