Observation Opportunity
Friday July 17, 2026: Sunset
This event is conducted if clear skies are prevalent at sunset.
Check our Discord site later in afternoon for evening outlook.
Rittenhouse Society Members, volunteers, and those interested in starting a membership are welcome to set up their personal astronomy gear to observe from the Ryan Observatory Amphitheater. Binoculars are considered astronomical observing gear! There is no presentation, just fellow amateurs enjoying the view.
Camping overnight at the observatory is not permitted. Overnight stays can be accommodated at Muddy Run Campground.
York College is looking for community outreach opportunities and would like to schedule private tours of ROMR. York College will provide bus transportation for up to 20 participants. RAS is seeking three volunteers to operate the domes and speak about observatory processes. The event will take place on Friday evening from 5:00–9:00 PM. Volunteers who sign up are expected to remain available the following day in case the event needs to be rescheduled due to cloud cover or rain. Please sign up on our Discord Site if interested.
Sunset 8:31 PM
Civil Dusk- 9:02 / Nautical Dusk- 9:42 / Astronomical Dusk- 10:26 PM
Nightfall 10:39 PM