GALLERY q OMEGA NEBUL A Gregg Ruppel Emission nebulae Messier 17 (center) and IC 4707 (top right) are actually part of the same cloud of hydrogen gas, bisected by a dust lane that lies in front of the nebulae as seen from Earth. DETAILS: ASA 10N Newtonian astrograph with SBIG STL-11000M CCD camera. Total exposure: 12.8 hours through LRGB filters. p DUST Y PL ANET Sebastian Voltmer Mars displays a wealth of detail near opposition following the global dust storm that erupted in June. The Solis Lacus region is visible in the south, though dust continues to fill Valles Marineris at right. DETAILS: 20-inch Cassegrain with ZWO ASI290MM video camera. Stacked video frames recorded through color filters on July 24 at 22:25 UT. BL A ZING FIREBALL Qiushi Tian During the early morning hours of August 8th, a slow, bright bolide lit up the landscape in Ergun, Mongolia, which briefly outshone the waning crescent Moon seen behind the light post at right. DETAILS: Canon EOS 5D Mark III DSLR camera with 24-to-105-mm lens at f/4, ISO 6400. Total exposure: 10 seconds. Gallery showcases the finest astronomical images submitted to us by our readers. Send your best shots to gallery@skyandtelescope.com. See skyandtelescope.com/aboutsky/guidelines. 76 DECE MBE R 2 018 * SK Y & TELESCOPE Visit skyandtelescope.com/gallery for more of our readers' astrophotos.http://www.skyandtelescope.com/gallery http://www.skyandtelescope.com/aboutsky/guidelines