Mercedes and Herbert Matter at Mark Borghi, plein-air painters at Gardiner Mill Cottage, photographs at a new gallery on Shelter Island, and more

A new dessert lineup at Nick and Toni's celebrates fall, and a variety of ciders are available by the dozen from Wolffer Estate.

From the science of eclipses to scientific poetry and everything in between, the Hamptons Observatory has been hosting astronomy talks since 2005, and its next one will look back at how astronomy impacted ancient Egyptian culture.