IC434 & B33 Horsehead Nebula Close-up with NGC-2023 Published April 11, 2015 at 1800 × 1220 in IC434 & B33 Horsehead Nebula Close-up with NGC-2023 IC434 & B33 Horsehead Nebula Close-up with NGC-2023 120 minutes exposure RGB + 4 hour Hydrogen Alpha light 16″Newt scope & QHY8 CCD Camera Yellow Springs, Ohio