GALLERY NGC 2023 Mark Hanson, S. Mazlin, W. Keller, R. Parker, T. Tse, P. Proulx (SSRO) Often overshadowed by the Horsehead Nebula to its west (outside the frame at top), this colorful mix of blue reflection and reddish emission nebulae in Orion surrounds the young star HD 37903. DETAILS: RCOS 16-inch Ritchey-Chrétien telescope with FLI PL16803 CCD camera. Total exposure: 38 hours through Astrodon LRGB filters. 74 J U N E 2 018 * SK Y & TELESCOPE