Hobbs Observatory Astronomical Series (HOAS) programs are held on third Saturday on the month (except December) at 8:00pm in the classroom at Hobbs Observatory.   Programs on various astronomical related topics are presented CVAS members and invited guests.  Programs run 45-60 minutes in length.  Topics can be found in the events calendar.

Hobbs Public Observing sessions follow all HOAS programs.  Additional public observing sessions are held on clear Saturdays May through October as volunteers are available.  Public observing starts about an hour after sunset for about two hours.

Phoenix Park Observing sessions in downtown Eau Claire are held about once a month on a weekend evening around the first quarter moon late spring through early fall. Follow CVAS on Facebook to get these event notifications.

CVAS business meetings are held on the first Tuesday of each month at 7:30pm in the classroom at Hobbs Observatory.  People interested in joining CVAS are encourage to attend.


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Astronomy Day

Saturday May 5 @ 10:00 am - 3:00 pm

The annual Astronomy Day is held from 10 a.m.-3 p.m. on Saturday May 5th near the north entrance of Phillips Science Hall at the University of Wisconsin-Eau Claire.

You can touch authentic meteorites, safely peer at sunspots, and learn where to see planets in the current night sky. A small working radio telescope will be detecting radio emission from the sun. Other activities include hands-on displays that highlight planets, spectroscopy, magnetism and radioactivity. There will be free short planetarium shows presentations during the event.

Astronomy Day is free and open to the public, and is sponsored by the Chippewa Valley Astronomical Society and the L.E. Phillips Planetarium. There is free parking on weekends in University parking lots, as marked, in the “S”, “F”, and “G” parking spaces.


Saturday May 5
10:00 am - 3:00 pm


UWEC Phillips Science Hall
110 Roosevelt Ave
Eau Claire, WI 54701 United States
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