Welcome to "No Night without a Telescope", the Philadelphia area's celebration of the International Year of Astronomy!

Eight local institutions have banded together to make an astronomy event available to the public every night from October 18 to November 24. Rain or shine, there will be a show starting at 7p.m. in October and 6p.m. in November - a public lecture, a demonstration or a slide show - every night. Whenever the weather permits, we will also have our telescopes open for public viewing of Jupiter and its moons, star clusters and our Moon.

In the News


Each institution will be open for one night a week, following this schedule:

  • Sunday nights - Villanova University (PDF)
    Dates: October 18 and 25 at 7pm
    November 1, 8, 15 and 22 at 6pm.
  • Monday nights - Widener University
    Dates: October 19 and 26 at 7pm
    November 2, 9, 16 and 23 at 6pm.
  • Tuesday nights - Swarthmore College
    Dates: October 20 and 27 at 7:30pm
    November 3, 10, 17 and 24 at 7:30pm.
  • Wednesday nights - Drexel University
    Dates: October 21 and 28 at 7pm
    November 4, 11 and 18 at 6pm.
  • Thursday nights - The Franklin Inst.
    Dates: October 22 and 29 at 7pm
    November 5, 12 and 19 at 6pm.
  • Friday nights - West Chester University
    Dates: October 23 and 30 at 7pm
    November 6, 13 and 20 at 6pm
  • On Saturday nights, we have two sites open:
    Saturday nights - Haverford College AND the University of Pennsylvania
    Dates: October 24 and 31 at 7pm
    November 7, 14 and 21. at 6pm

No Night without a Telescope will begin at most sites each night at 7:00 p.m. Daylight Time in October and 6:00p.m. Standard Time in November. However, please confirm times and other details by clicking on the link for the place you hope to visit. We will end at 9:00 or 9:30, depending on how many people attend.

Kids are absolutely welcome!

Dress warmly - our telescopes are outdoors!

If in doubt about the weather, please check www.weather.com.

What Can We See?

If the weather permits, we will look at Jupiter and its four moons and at clusters of stars. Except right around new moon (Oct. 18-20 and Nov. 14-18) we will also look at mountains and craters on the Moon. These were among the first observation Galileo made when he first turned his newly-invented telescope towards the heavens in 1609.

This year 2009, has been declared the International Year of Astronomy to mark the 400th anniversary of Galileo's discoveries.

Visit each college's or institution's website for driving directions, schedules and details about the events planned by that institution.

Observations of Jupiter's moons can be used to weigh Jupiter. If you are interested in joining others in this project, ask the astronomer for more details.