First Place: $250. Clavius Crater System, by Richard Francini, Neville Public Museum Astronomical Society.

Using a 13 inch Dobsonian from De Pere, WI on Jan. 28, 2018, 2:00 to 6:30 UT. Seeing was a (1-) and improved to 1 for about 90 minutes (near perfect seeing conditions!), transparency 18.7 SQM with 2/3 moon. Rock steady images with 5.5 mm and 4.8 mm eyepieces giving 300 and 355 power. Total time: about 9 hours! Pencil on paper.