Public Viewing


The Cline Observatory is open to the public for viewing every clear Friday night throughout the year.

The viewings begin ½ hour after sunset during March-October, and at 7:00 during November-February. (Determine sunset time for a particular date.) Sessions usually last about two hours, but may run longer or shorter depending on interest and sky conditions.  Our sessions are unstructured – there’s no program – just telescopic viewing.

Note that the observatory is open to the night air, and so will be cold in the winter and warm in the summer. Be sure to dress for the conditions.

For updates regarding how weather or other issues will affect this week’s session, check our Twitter Updates Page @gtccastro.

For other questions about the observatory and its programs, contact Tom English at or 336-334-4822 Ext. 50023.

There is no charge for public night viewing and the observatory is open to anyone wishing to attend. No reservations are necessary, and there are no limits on the number of attendees. (We do ask that you let us know well ahead of time if you plan to bring a large group.)

Public Viewing Schedule

Click on the links below to read viewing schedule.

June Sessions (Sessions start as darkness falls)
Date Featured Object Host
7 June The Moon Dennis Hands
14 June Double Star Albireo Beth Desch
21 June Globular Cluster M3 Robert Royals
28 June Globular Cluster M92 Kevin Erdy
Sessions Continue in July

July Sessions (Sessions start as darkness falls)
Date Featured Object Host
5 July M27, the Dumbbell Nebula Brian Morris
12 July

The Moon

Part of the NCSF Statewide Star Party Celebration of the 50th Anniversary of Apollo 11

Jeff Regester
19 July


Apollo 11 Commemoration Activities Continue

Christina Guzik
26 July M8, the Lagoon Nebula Alec LaGrega
Sessions Continue in August

August Sessions (Sessions start as darkness falls)


Featured Object


2 August

M57 – the Ring Nebula

Tim Martin

9 August

Many Moons

Hank Corbett

16 August

Astronomical Firsts

Jeff Regester

23 August


Gregory Brannon

30 August

M11 – The Wild Duck Cluster

Jeff Swanson

Sessions Continue in September

Special Viewing Sessions – Eclipses, Transits, Etc.

Occasionally, Cline Observatory holds viewing sessions for special events such as eclipses, transits, or other remarkable astronomical phenomena. These sessions are presented in the same manner as our Friday public viewings, though if the situation requires, we may shift our portable telescopes to other locations on campus.

As with our Friday public viewings, all Cline Observatory special viewing sessions are free and open to anyone with an interest in astronomy.

Recent special sessions we have scheduled include:

  • Total Lunar Eclipse Jan. 20, 2019
  • Expedition to Newberry, SC for Total Solar Eclipse of Aug. 21, 2017
  • Partial Solar Eclipse Oct. 23, 2014
  • Venus Transit June 5, 2012
  • Lunar Eclipse Dec. 10, 2010 (cloudy)
  • Total Lunar Eclipse Feb. 21, 2008
  • Total Lunar Eclipse  March 3, 2007
  • Mercury Transit  Nov. 8, 2006 (cloudy)
  • Total Lunar Eclipse  Oct. 27, 2004
  • Venus Transit  June 6, 2004 (cloudy)

Transits of Venus & Mercury

Three hundred visitors came to GTCC to observe the 2012 Venus Transit – a phenomenon that will not be seen on Earth again until 2117. For more information about this event and other transits, see our Transits page.

Lunar and Solar Eclipses

Cline Observatory is open for viewing lunar and solar eclipses visible in our area. Details about upcoming eclipses will be posted on our Eclipses page.

Meteor Showers

Cline Observatory DOES NOT hold special sessions for meteor showers because they are best observed without telescopes, and are usually best seen from dark locations between midnight and dawn.

The American Meteor Society provides an annual meteor shower calendar,  guides to visual observation of meteors, and weekly updates on meteor activity.  The International Meteor Organization provides annual shower calendars, visual meteor observing resources, and regular outlooks on meteor activity.