Ryan Observatory at Muddy Run is owned by Constellation Energy Corporation and operated by the Rittenhouse Astronomical Society, with the support of Astronomy Enthusiasts of Lancaster County and the Harford County Astronomical Society. The observatory is located within the Muddy Run Recreation Park in Southern Lancaster County (Holtwood, PA). The observatory receives guests for open house events one night each month from April through December. Please check the event schedule for dates and times through December 2019. In addition, the facility will host special events by appointment and operates with an educational program for school and other organization outings. 

For short, Muddy Run Observatory was recently renamed Ryan Observatory at Muddy Run, ROMR. The renaming ceremony was performed in a video format and can be viewed here: https://edge.media-server.com/mmc/p/ornyjp8b. 

Are you a teacher or leader of a local group for kids? Do you want to learn more about the Muddy Run hydroelectric plant, nature, or astronomy? Contact the visitor's center to learn more about programs for kids.
 

Ryan Observatory at Muddy Run Clear Sky Chart

Ryan Observatory at Muddy Run website