Fuertes Observatory Open House Nights
Fuertes Observatory is open every Friday night during the Cornell academic year from 8 PM until midnight (regardless of weather) and occasionally at other times, as announced on our Twitter, Instagram, and Facebook. Lectures are given on select Friday nights in Appel Commons Multipurpose Room 303. Appel Commons is a three-minute walk away from the Observatory, where open house nights begin after each lecture.
When clear, public viewing takes place through the observatory's telescopes. Tours of the historic building, the Irving Porter Church Refractor, and our museum will be given throughout the night, regardless of the weather.
Check our Twitter feed for updates!
You can also visit our Hours & Directions page for hours, directions, parking information.
Fuertes Observatory Guidelines
When you attend an open house night at the Fuertes Observatory, please be respectful of the volunteers and other observers. Please do not use flash photography, cell phones, and other sources of white light while observing is taking place. In order to see faint detail in galaxies and nebulae, the eyes must be fully dark adapted, which takes several minutes. Any source of white light will interfere with this adjustment and will disturb other observers.
Dress appropriately for the season! The dome room and deck of the observatory are both unheated, and the temperature often falls rapidly after sunset.
Children are welcome, but must be accompanied by an adult at all times.
Smoking of any kind (including e-cigarettes) is strictly prohibited in or around the observatory and on the observing deck. Pets are not allowed in the building.