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Chabot Space and Science Center
Chabot SSC entrance.jpg
View of the entrance of the Chabot Space and Science Center.
Established 1883
Location Oakland, California, United States
Type Planetarium
Solar clock IMG 3333
Solar clock at the Chabot Space and Science Center.

Chabot Space and Science Center, located in Oakland, California, is a center for science learning featuring interactive exhibits, planetariums, a large screen theater, hands-on activities and three powerful telescopes.

The Center is the continuation and expansion of a public observatory that has served San Francisco Bay Area schools and citizens with astronomy and science education programs since 1883. It is named after the father of hydraulic mining and benefactor of the original Oakland Observatory, Anthony Chabot. Since 2000, the Center has been located on the western border of Redwoods Regional Park.

History

Chabot SSC front
The sign at the entrance of the Chabot Space and Science Center.

The institution began in 1883 as the Oakland Observatory, through a gift from Anthony Chabot to the City of Oakland. The original Oakland Observatory was located near downtown Oakland and provided public telescope viewing for the community. For decades, it also served as the official timekeeping station for the entire Bay Area, measuring time with its transit telescope.

The observatory moved to its Mountain Boulevard location in 1915 due to increasing light pollution and urban congestion. In the mid-1960s, the facility was expanded considerably. Throughout this time, the Chabot Science Center, as it was renamed, was staffed mainly by Oakland Unified School District personnel and volunteers. In 1977, seismic safety concerns terminated public school students’ access to the original observatory facility. The observatory building remained open to the general public, but school activities were limited to outlying classroom buildings and the planetarium.

Wightman Observatory Plaza at Chabot Space and Observatory Center
Wightman Observatory Plaza at the current location.

Recognizing the need to restore full access to the facility, either by repair or relocation, in 1989 Chabot Observatory & Science Center was formed as a Joint Powers Agency with the City of Oakland, the Oakland Unified School District, and the East Bay Regional Park District, in collaboration with the Eastbay Astronomical Society, and in 1992 was recognized as a nonprofit organization. The project was led by Chabot's Executive Director and CEO, Dr. Michael D. Reynolds, breaking ground for the facility in October 1996 with construction of the new 88,000-square-foot (8,200 m2) Science Center beginning in May 1998.

In January 2000, anticipating the opening of the new facility, the organization changed its name from Chabot Observatory & Science Center to Chabot Space & Science Center. The new name was chosen to better convey the organization's focus on astronomy and the space sciences, while communicating both the broad range and the technologically advanced nature of programs available in the new Science Center.

Opened August 19, 2000, the Chabot Space & Science Center is an 86,000-square-foot (8,000 m2), state-of-the-art science and technology education facility on a 13-acre (53,000 m2) site in the hills of Oakland, California. The museum was formerly an affiliate in the Smithsonian Affiliations program but is currently no longer an affiliate.

Attractions

Aside from its telescopes, it contains:

  • Two planetariums: a "full dome digital projection system" with various shows running daily, and a Zeiss Universarium fiber-optic projector with weekly shows.
  • The Tien MegaDome Theater, a 70-foot (21 m) dome screen auditorium which presented various IMAX-like shows. (now no longer in regular use).
  • The Challenger Learning Center, a hands-on simulated space mission environment where 8 teams work together to complete a mission.
  • Many changing exhibits, full of hands-on displays, that highlight space and science topics. As of August 18, 2006, there are nine open exhibits.

Telescopes

8-inch-Telescope-Leah
Chabot's 8-inch (200 mm) refractor telescope, Leah.
Chabot's meridian transit telescope
Chabot's meridian transit telescope.
Rachel-2-modern
Chabot's 20-inch (510 mm) refractor telescope, Rachel.
Chabot Nellie NeoTeam-800x1200
Chabot's 36-inch (910 mm) Cassegrain telescope, Nellie.

Chabot Space and Science Center has three observatory telescopes, all of which are open to the public on weekends.

  • "Leah" is an 8" refractor telescope built in 1883 by Alvan Clark & Sons and donated by Anthony Chabot.
  • "Rachel" is a 20" refractor telescope, commissioned in 1914 from Warner & Swasey, with optics by John Brashear. It is the largest refractor in the western United States regularly open to the public.
  • "Nellie" is a 36" Cassegrain reflector telescope which opened in August 2003, housed in a rolling roof observatory. The primary mirror was donated by Lawrence Livermore National Laboratory and figured and polished by Rayleigh Optical Corporation. Control systems and mount drives were purchased from DFM Engineering.

Observatory quick facts

  • Original Observatory built: 1883, near Downtown Oakland, California
  • Second Observatory built: 1915, at Mountain Boulevard
  • Third (Present) Observatory built: 2000, at Skyline Boulevard

Telescope Details

Leah

  • Type - Refracting telescope
  • Maker - Alvan Clark & Sons, 1883
  • Aperture – 8 inches
  • Focal Length – 112 inches
  • Mount – German equatorial
  • Benefactor: Anthony Chabot
  • Usage Intent – popular and educational use


Meridian Transit Telescope

  • Type - Transit telescope
  • Maker - Fauth & Co., 1885
  • Aperture – 4 inches
  • Focal Length –
  • Mount – Double Pier Transit
  • Usage Intent – popular and educational use / time determination


Rachel

  • Type - Refracting telescope
  • Maker - Warner & Swasey / John Brashear, 1914
  • Aperture – 20 inches
  • Focal Length – 28 feet (8.5 m)
  • Mount – German equatorial
  • Cost – $20,000
  • Usage Intent – popular and educational use, formerly used for spacecraft tracking


Nellie

  • Type - Reflecting telescope, specifically a classical cassegrain reflector
  • Maker - Chabot Space & Science Center, 2003
  • Aperture – 36 inches
  • Focal Length – 24 feet (7.3 m)
  • Mount – equatorial fork
  • Usage Intent – popular and educational use, research including tracking of Near Earth Objects.

Planetariums

Chabot planetarium
Chabot's Ask Jeeves Planetarium

The Planetarium seats 250 people under a 70-foot (21 m) diameter dome, and features live weekly shows and daily pre-recorded "fulldome" shows. The weekly live shows are presented by a staff astronomer.

  • Zeiss Universarium:

The custom-built Zeiss Universarium Mark VIII fiber-optic star projector was recently refurbished. World-class optics create a precise, deep-field sky with up to 9,000 celestial objects. Shows weekly.

  • Live Show:

Cosmos 360 uses the planetarium's digital fulldome system to view the night sky as well as flying through space to see the universe from a different perspective. The guided tour include in-depth views of planets, constellations and other current astronomical events. The show is updated to reflect seasonal night skies.

  • Daily Shows:

The daily shows range from content geared for young children through more sophisticated shows designed for a general audience.

A complete schedule and listing of daily shows as well as current show times can be found at the center's planetarium page.

Galaxy Explorers program

The Chabot Space and Science Center offers volunteer and educational opportunities to local teens, who work as explainers on the museum floor or on outreach trips. The program was initiated by a grant from YouthALIVE! (Youth Achievement through Learning Involvement, Volunteer and Employment!) through the Association of Science-Technology Centers.

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