D/1952 B 1 Harrington-Wilson › Forums › Comets › D/1952 B 1 Harrington-Wilson › D/1952 B 1 Harrington-Wilson 26 March 2017 at 6:40 pm #578068 Lars LindhardParticipant Thank you. It seems to be at bit more difficult than the promised mag. 9 in Guide 9.
