t ZODIACAL LIGHT Kurt W. Hillig II The glow of sunlight scattered by interplanetary dust, framed by Aldebaran, the Pleiades, and Capella, shines after a late-March sunset. DETAILS: Canon EOS 5D Mark II DSLR camera at ISO 2500 with 16-to-35-mm zoom lens at 16 mm. Total exposure: 75 seconds. q CLUSTERED SCENE Dan Crowson Cassiopeia boasts the fine open clusters IC 166 (top left), NGC 654 (top right), and NGC 663 (bottom). DETAILS: Astro-Tech AT90DT apochromatic refractor, SBIG ST-8300M CCD camera, and LRGB filters. Total exposure: 4 hours. s k y a n d t e l e s c o p e .c o m * MARCH 2017 77http://www.skyandtelescope.com