On 6 March, two weeks after the event, Fehlau preached at St Mary's church; taking the event, and the widespread interest it created, as his inspiration.
The following year Hevelius published his book Mercurius in Sole visus Gedani ("Mercury appeared in the Sun, at Gdansk"), principally on the observation of a transit of Mercury, but containing other astronomical information, including an account of the 1661 halos [REF].