College of Sciences

Department of Physics and Astronomy


Astronomy header


First Friday header
Every First Friday of the Month

First Friday Stargazing is designed to give anyone free access to the night sky by using university telescopes and teaching equipment.

Weather permitting, experienced astronomers will provide a handful of telescopes of varying designs, give training on how each operates, and point to various astronomical objects that may appear in the sky for that given time of the year. If you have a telescope and do not know how to operate it, feel free to bring it and get instruction on its use.

The Curtis Vaughan Jr. Observatory is located on the 4th floor of the Flawn Science Building on the UTSA Main Campus. After exiting the elevator, look for the doors to the outside star party observation deck adjacent to the observatory. The public is encouraged to park in the Ximenes Ave Garage which is close to the Flawn Science Building.

Due to varying times of sunset throughout the year, the start times for this event will vary. See below for upcoming event dates and times.

Scheduled Dates


Friday Nights Celestial Lights header
Every Third Friday of the Month (Fall & Spring Semesters)

Friday Nights Celestial Lights is a free public venue provided during the Fall and Spring school semesters.

Physics & Astronomy faculty and staff conduct a 30-40 minute presentation on recent developments in astronomy and astrophysics followed by stargazing at the school's observatory (weather permitting). Presentations are intended to be understood by middle-school-aged children and older.

Scheduled lectures begin promptly at 7:30 pm in the Flawn Science Building lecture room 2.02.02. Immediately after the lecture, stargazing commences at the Curtis Vaughan Jr. Observatory.

Topic suggestions may be emailed to us at We cannot guarantee the requested topic will be covered and reserve the right to make the final decision. See below for upcoming lecture dates and topics.

Scheduled Dates



Sky Map


Download the monthly Sky Map.

Additional Resources

Tonight's Sun and Moon Data
Light Pollution Map
CVO Weather Station Data


The most convenient parking location is the Ximenes Ave Garage. There is an hourly fee to park in the garage. See UTSA map with the Flawn Science Building and Ximenes Ave Garage notated.

Note: The outlying lots are dedicated to faculty/staff and students; special permits are required and parking in these areas without a permit may result in being ticketed by patrolling Business Auxiliary Services Office personnel. For more information on parking and possible free parking areas, please call (210) 458-PARK.

Images and Photos

View images from the observatory telescope and photos from past events at the observatory.


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