Observation Opportunity
Saturday May 16, 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.   

A Rittenhouse representative will be on hand at Civil Dusk (time below) to turn off lighting for dark sky and astrophotography observations. 

Clear Sky Chart / Smoke Chart

Sunset 7:45 PM
Civil Dusk- 8:45 / Nautical Dusk- 9:23 / Astronomical Dusk- 10:05 PM
Nightfall 10:05 PM