Hi Adam,
After reading your post I managed several images of M108 no filter at 60 and 30 sec and with a V filter at 60 sec at about 02.00-0230 UT on 2018-04-20
If you are referring to the bright centre (forground) star then this appears in images I’ve quickly looked at and hence do not think there is any urgency and will delay processing until later today as I’m far too tired now.
Eric (Essex, UK)