GALLERY HORSING AROUND IN THE SKY Vikas Chander Barnard 33, popularly known as the Horsehead Nebula, is a thick cloud of gas and dust that towers in front of the reddish emission nebula IC 434. Bluish reflection nebula NGC 2023 is visible at bottom left. North is to the left. DETAILS: PlaneWave CDK17 Corrected Dall-Kirkham telescope and SBIG STXL-11002 camera. Total exposure: 251/2 hours through LRGB and Hα filters. 76 APRIL 2023 * SKY & TELESCOPE