Reply To: M45 by daylight. › Forums › General Discussion › M45 by daylight. › Reply To: M45 by daylight. 16 February 2024 at 6:00 pm #621774 Robin LeadbeaterParticipant Stars with H alpha emission lines (of which there are several in the Pleiades) in a narrow band H alpha filter (where the solar spectrum has a deep absorption) might be interesting.
