Astronomy Events | Physics | SIU | Night Sky Network

Southern Illinois University



College of Agriculture, Life and Physical Sciences

Southern Illinois Star Party, AASI member looking through telescope

Public Astronomy Observations

The SIU Carbondale Physics Department hosts free public observations the 3rd Sunday of each month during the fall and spring semesters. Observations start one hour after sunset and going for one and a half hours. Observations are at the observation deck on top of the Neckers building as well as the observation area at the SIU Farms Dark Site. We typically observe bright sky objects such as the Moon, major planets, star clusters, nebula and some deep sky objects such as the Andromeda Galaxy. All observations are weather dependent and space limited. The Neckers observation deck is not handicap accessible, however we can arrange for telescopes to be setup at ground level for individuals not able to take stairs to the observation deck. If you have a large group or other special needs, please contact the event coordinator to let them know in advance.  Children accompanied by adults are welcome. For up to the minute event info and online discussion, see the Physics department Facebook event info page:

Facebook Physics Events

Observation Schedule 2020

Spring 2020 - Public Observations at Neckers


Sunday, March 15, 8pm - 9:30pm - CANCELLED


Sunday, April 19, 8:30pm - 10pm - CANCELLED


Friday, July 10, 2020, 7pm to midnight - CANCELLED

The 3rd annual Southern Illinois Start Party at the SIU Farms Astronomy Observation Area.  Details TBA.


Alternate / Special Observations

Campus and community groups can arrange special observation on campus, or we can bring telescopes to you. To make arrangements, contact Bob Baer at 618-453-2729,

Observation Deck and Telescopes


The observation deck is 624 square feet in size. It is built out of 2" thick rubber matting for vibration isolation. The primary telescope is a 14" Meade LX600. This computer guided telescope is used for all observation events as well as the lab portion of PHYS 103 (Astronomy). Several additional scopes are setup for observations as needed including Celestron 8" SCTs, a Coronado SolarMax II, and a Stellarvue SV105 Raptor (105mm refractor).



What Can You See?

Moon and Saturn

The most spectacular viewing is of the Moon and major planets such as Jupiter, Saturn, Venus and Mars. On clear nights, you can easily see the rings of Saturn and detailed striations on Jupiter. Brighter objects such as the Great Orion Nebula, the Andromeda Galaxy and several clusters are also visible visually.

Dimmer deep sky objects are typically only visible during evenings with low humidity and not much cloud cover. On select night, deep sky cameras are utilized to display images of objects otherwise not visible though visual observations.

Previous Event Photos

Mars Opposition Star Party 2018. Star party at the SIU Farms for the Mars Opposition.  See photos of the event on Bob Baer's Flickr photo stream.

Eclipse 2017 at SIU Carbondale.  Southern Illinois University Carbondale hosted 30,000+ visitors to campus August 18 - 21, 2017 for four days of eclipse themed events capped off by Eclipse Day at Saluki Stadium. If you missed this, you'll want to mark your calendars for the next total solar eclipse to pass through Carbondale on April 8, 2024.  Check out the photos at:

June 5, 4:00pm - 10:30 pm. Special daytime solar observation - Transit of Venus. If you missed the transit, you can see photos of the event here. Special thanks to the Astronomical Association of Southern Illinois as well as all the people who turned out and helped out on the day of the event.