GALLERY p INFLUENTIAL BL ACK HOLE p THROUGH THE WITCH HEAD Kent Wood Relativistic jets from the stellar-mass black hole Cygnus X-1 collide with the surrounding interstellar medium to produce the blue bow shock seen faintly at right. DETAILS: 16-inch Ritchey-Chrétien telescope with Atik 16200 CCD camera. Total exposure: 18 hours through color and narrowband filters. Kfir Simon Several galaxies including NGC 1752 (left of center) appear through the bluish reflection nebulosity and brownish dust of the Witch Head Nebula, IC 2118, in Orion. DETAILS: 16-inch f/3.75 Dream Astrograph with Apogee Alta U16M CCD camera. Total exposure: 4 hours through LRGB and hydrogen-alpha filters. STELL AR ANNULUS Ethan Wong The Moon passes in front of the Sun during the eclipse of December 26, 2019. Since the Earth is so close to perihelion, the Moon cannot completely cover the solar disk, resulting in an annular, rather than total, solar eclipse. DETAILS: William Optics Zenithstar 61 f/5.9 refractor with Canon 60D DSLR camera. Composite of 11 exposures captured at ISO 100. Gallery showcases the finest astronomical images that our readers submit to us. Send your best shots to gallery@skyandtelescope.org. See skyandtelescope.org/aboutsky/guidelines. Visit skyandtelescope.org/gallery for more of our readers' astrophotos. 76 APRIL 2 02 0 * SK Y & TELESCOPEhttp://www.skyandtelescope.org/aboutsky/guidelines http://www.skyandtelescope.org/gallery