It looks like the clouds rolled in, so the observatory will be closed tonight. Join us for our next public night on June 12 at 9:30 pm.
CSU Astronomy at the Madison-Macdonald Observatory
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The Madison-Macdonald Observatory is located on Colorado State University (CSU) main campus.
We host regular public observing nights on the first and third Fridays of the month from April through November.
Join us for public observing Friday, May 8 from 9 pm - 10 pm!
05/01/2026
Join CNS Little Shop of Physics for their summer kickoff celebration!
Looks like we might be dodging some clouds tonight, but we plan to open for public observing at 8:45 pm.
Too many clouds tonight, so we will postpone the start of public observing until Friday, April 24. (https://www.physics.colostate.edu/about/astronomy/)
02/23/2026
Join us tonight for the last public night of the season. Saturn and Neptune will make an appearance. We're open until 6:45 pm.
We are going to bump our final observing night of the season to Saturday, 11/22 at 5:45 - 6:45 pm due to weather.
It looks like the sky is going to clear up for observing tonight. We'll be at the observatory from 5:45 - 6:45 pm. Parking is available along the sidewalk in front of the building.
The observatory will be open tonight from 7:15 pm - 8:30 pm!
Join us during Homecoming Weekend as we celebrate the 60th anniversary of CSU’s Madison-Macdonald Observatory. (https://www.physics.colostate.edu/about/astronomy/mmo-60th-anniversary-celebration/) Colorado State University CSU Alumni Association - Colorado State University CSU College of Natural Sciences CNS Little Shop of Physics
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1251 Libbie Coy Way
Fort Collins, CO
80521