One of Bowdoin's Vertical DialsThe NASS Conference in Portland, ME began with a sundial tour, highlighting the Children's Museum of Maine and the large Camera Obscura. From there, attendees toured a number of sundials including armillary spheres, vertical and horizontal dials, including the Bowdoin College Vertical Dials and Osher Map Library that showed maps with the figure 8 analemma, filling the void in the Pacific Ocean next to comments like "There be dragons here". 
Osher Map Library During the conference a variety of sundials were the topic of presentations. Bob Kellogg presented his digital sundial while Jame Stegenga showed his concrete sundial for the courtyard of a courthouse in Brazil. Patrick O'Hearn showed his handiwork of making wood sundials and Mark Montgomery presented his handiwork of creating a mosaic spherical sundial. Barry Duell talked of his experiment to determine when the moon would shine through his window onto his pillow. By measuring the geometry of the window and bed, he determined the range of acceptable lunar altitude and azimuth. From there, using an ephemeris, he could predict date and time the moon would shine on his pillow as he drifted off to sleep. Other presentations included the anatomy of the astrolabe by Tom Wujec.
Download the Retrospective: 
2016_NASS_Conference_Portland.pdf
(left) Kellogg's Digital Dial & (right) Stegenga's Brazil Dial