Hartman Creek State Park, Wisconsin
Hartman Creek State Park, Wisconsin located about 113 miles (182 km) north of Madison, Wisconsin, on the upper Waupaca Chain-O-Lakes, is 1,500 acres of post-glacial beauty. A highlight of the year for amateur astronomers and their families is the Wisconsin Observers Weekend; enthusiasts from all over the midwest flock here to enjoy three days of summer camping and observing. Please note that while camping is allowed, the park is only open to the public between 6:00 a.m. and 11:00 p.m. and requires a vehicle admission sticker. Annual park stickers and camping passes can be reserved online or over the phone by calling 1-888-305-0398 from 8:00 a.m. to 4:00 p.m. Central Time, seven days a week.