I saw a ghost in Ireland

In 2022 I took a trip to Ireland where I visited Glendalough a 12th century monastic city not far from Dublin. There is a cemetery and a chapel there along with other ruins you can look at. While inside the church I was photographing the scene and saw something fly past my camera. I thought it was a bird or something that had gotten in and was flying around. I put my camera down and looked but I couldn't see anything out of the ordinary. So I left after taking my fill of pictures and wondered outside to see the rest of the buildings and breath taking scenery.  Later on that night, back at the hotel, I started scrolling through the pics I had taken. Much to my shock and dismay there was a lone photo of a perfectly shaped pink colored orb. It was just floating there in the darkness. I was pretty creeped out for awhile knowing I saw a ghost and actually photographed it. I guess that's how it is in ancient places.