The College of Southern Idaho's Centennial Observatory

The Centennial Observatory

The observatory features one of the world's largest fully wheelchair-accessible public telescopes. The main instrument is the Norman Herrett telescope, a 24" Ritchey-Chrétien reflector on a computer-controlled fork mount, manufactured by DFM Engineering of Longmont, Colorado, USA. An elevator takes visitors to its second-story location at the south end of the museum. Once there, a wheelchair elevator takes visitors with limited mobility to the observing deck under a six-meter (20 foot) motorized dome manufactured by Observa-Dome of Jackson, Mississippi, USA. The ARE-125, an optical "periscope" designed by DFM, allows unprecedented access to the telescope for wheelchair-bound or limited-mobility visitors. An Apogee Alta E47+ CCD camera is available for imaging, a generous gift of Dick and Jody Shotwell.

Observatory Telescope

For More Information Contact:

The Herrett Center for Arts & Science
The College of Southern Idaho
315 Falls Avenue
Twin Falls, ID 83301
Museum Front Desk: (208) 732-6655
Planetarium Ticket Sales: (208) 736-3059
Star Line Sky Info: (208) 732-MOON (732-6666)
Fax: (208) 736-4712

	Observatory Open Hours & Admission Prices
	Monthly Star Parties:
	2^nd Saturday of the month, year round (weather permitting). Time: Starting about one hour after sunset, lasting two hours or until 9:00 PM, whichever is later. Admission: FREE
	Summer Solar Sessions:
	Wednesdays, Memorial Day through Labor Day (weather permitting). Time: 1:30 to 3:30 PM Admission: FREE
	Telescope Tuesdays:
	2^nd and 4^th Tuesdays of the month, November through February (weather permitting). Time: About one hour after sunset until 9:00 PM. Admission: $1.50 per person (children 6 and under are free) or FREE with planetarium show admission.

	Astronomy Resources
	Eclipses Visible in Twin Falls, Idaho, USA, 2024-2044
	Weather Forecasts:
	Clear Sky Chart Clear Outside Weather Street Cloud Forecast SkippySky

Centennial Observatory Clear Sky Chart

The Herrett Center for Arts & Science
The College of Southern Idaho
315 Falls Avenue Twin Falls, ID 83301
Planetarium Ticket Sales: (208) 732-6655
Star Line Sky Info: (208) 732-MOON (732-6666)
Fax: (208) 736-4712

Physical Address:

315 Falls Avenue
Twin Falls, ID 83301-3389

Mailing Address:

PO Box 1238
Twin Falls, ID 83303-1238
(Please send UPS/FedEx to physical address)

Office of Admissions:

E-mail: admissions@csi.edu
Phone: 208-732-6221

General Information:

E-mail: info@csi.edu
Phone: 208-733-9554
Toll free: 1-800-680-0274 (Idaho & Nevada)

Website Questions:

E-mail: csiwebmaster@csi.edu

Get Social:

CSI Visual Identity (Logos) · Accessibility · Online Privacy Statement · Disclaimer · Copyright Claims