GALLERY p THE WOLF'S CAVE Craig & Tammy Temple Van den Bergh 152, a blue-tinged nebula in Cepheus, sits at one end of a long, dark streamer designated Barnard 175. This pairing is known as the Wolf's Cave. DETAILS: Stellarvue SVR102T apochromatic refractor and QSI 683wsg-8 CCD camera with Astrodon E-Series Gen II LRGB filters. Total exposure: 3.8 hours. u A SPIR AL'S ARMS AKIMBO Ian Gorenstein Astronomers aren't certain, but the dusty, star-filled arms of spiral galaxy NGC 2146 might have become bent and contorted after a close encounter with another galaxy. DETAILS: Celestron EdgeHD 14 Schmidt-Cassegrain telescope, Atik 460EX monochrome CCD camera, and LRGB filters. Total exposure: 4.2 hours. * For more astrophotos, visit skyandtelescope.com/gallery. 76 M A Y 2 0 1 7 * SK Y & TELESCOPEhttp://www.skyandtelescope.com/gallery