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Catalogue and alternative designations HaTr 3, PK333-4.1


Type Planetary Nebula 
Position 16 39 37.4, -52 49 13
Constellation Norma
Camera and Telescope STLXL6303E and 36.8 cm Ritchey Chretien
Focal Ratio F9
Exposure Details HaOIIILRGB image (Hydrogen Alpha and Oxygen III supplemented with RGB stars). Ha = 200 minutes, OIII = 140 minutes, L = R = G = B = 30 minutes. All unbinned.
Description HaTr3 is one of 14 low surface brightness planetary nebulae cataloged by Herbert Hartl and Sue Tritton in 1985. The diameter is 42 arcseconds and the photographic magnitude is 16.1. The colour appears bluish because OIII emission predominates. This image is a full resolution crop.