Automated Planet Finder

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Automated Planet Finder
Automated Planet Finder, Lick Observatory Aug 2019 2.jpg
Alternative namesAPF  OOjs UI icon edit-ltr-progressive.svg
Part of Lick Observatory   OOjs UI icon edit-ltr-progressive.svg
Location(s) Santa Clara County, California
Coordinates 37°20′33″N121°38′18″W / 37.34254148°N 121.63826312°W / 37.34254148; -121.63826312 Coordinates: 37°20′33″N121°38′18″W / 37.34254148°N 121.63826312°W / 37.34254148; -121.63826312 OOjs UI icon edit-ltr-progressive.svg
Altitude1,280 m (4,200 ft) OOjs UI icon edit-ltr-progressive.svg
Telescope style optical telescope
robotic telescope   OOjs UI icon edit-ltr-progressive.svg
Diameter2.4 m (7 ft 10 in) OOjs UI icon edit-ltr-progressive.svg
Website www.ucolick.org/main/science/telescopes/apf.html,%20http://www.ucolick.org/public/telescopes/apf.html OOjs UI icon edit-ltr-progressive.svg
Usa edcp relief location map.png
Red pog.svg
Location of Automated Planet Finder
Commons-logo.svg Related media on Wikimedia Commons

The Automated Planet Finder (APF) Telescope a.k.a. Rocky Planet Finder, [1] is a fully robotic 2.4-meter optical telescope at Lick Observatory, situated on the summit of Mount Hamilton, east of San Jose, California, USA. [2] It is designed to search for extrasolar planets in the range of five to twenty times the mass of the Earth. The instrument will examine about 10 stars per night. Over the span of a decade, the telescope is expected to study 1,000 nearby stars for planets. [3] Its estimated cost was $10 million. [4] The total cost-to-completion of the APF project was $12.37 million. [2] First light was originally scheduled for 2006, but delays in the construction of the major components of the telescope [5] pushed this back to August 2013. [1] It was commissioned in August 2013. [6]

Contents

The telescope uses high-precision radial velocity measurements to measure the gravitational reflex motion of nearby stars caused by the orbiting of planets. The design goal is to detect stellar motions as small as one meter per second, comparable to a slow walking speed. The main targets will be stars within about 100 light years of the Earth. [1]

Early tests show that the performance of the Ken and Gloria Levy Doppler Spectrometer is meeting the design goals. The spectrometer has high throughput and is meeting the design sensitivity of (1.0 m/s), [1] similar to the radial velocity precision of HARPS and HIRES.

Construction

Parts for the telescopes were constructed by international companies: [1]

Collaboration with Breakthrough Listen

The telescope is also being used to search for optical signals coming from laser transmissions from hypothetical extraterrestrial civilizations (search for extraterrestrial intelligence - SETI). This undertaking is performed for the heavily funded Breakthrough Listen project of the Berkeley SETI Research Center. [7]

See also

Related Research Articles

Search for extraterrestrial intelligence Effort to find civilizations not from Earth

The search for extraterrestrial intelligence (SETI) is a collective term for scientific searches for intelligent extraterrestrial life, for example, monitoring electromagnetic radiation for signs of transmissions from civilizations on other planets.

Frank Drake American astronomer and astrophysicist

Frank Donald Drake is an American astronomer and astrophysicist. He is involved in the search for extraterrestrial intelligence, including the founding of SETI, mounting the first observational attempts at detecting extraterrestrial communications in 1960 in Project Ozma, developing the Drake equation, and as the creator of the Arecibo Message, a digital encoding of an astronomical and biological description of the Earth and its lifeforms for transmission into the cosmos.

Terrestrial Planet Finder NASA concept study of an array of space telescopes

The Terrestrial Planet Finder (TPF) was a proposed project by NASA to construct a system of space telescopes for detecting extrasolar terrestrial planets. TPF was postponed several times and finally cancelled in 2011. There were two telescope systems under consideration, the TPF-I, which had several small telescopes, and TPF-C, which used one large telescope.

Lick Observatory Astronomical observatory in California

The Lick Observatory is an astronomical observatory owned and operated by the University of California. It is on the summit of Mount Hamilton, in the Diablo Range just east of San Jose, California, United States. The observatory is managed by the University of California Observatories, with headquarters on the University of California, Santa Cruz campus, where its scientific staff moved in the mid-1960s. It is named after James Lick.

Michel Mayor Swiss astrophysicist & Nobel laureate of Physics

Michel Gustave Édouard Mayor is a Swiss astrophysicist and professor emeritus at the University of Geneva's Department of Astronomy. He formally retired in 2007, but remains active as a researcher at the Observatory of Geneva. He is co-laureate of the 2019 Nobel Prize in Physics along with Jim Peebles and Didier Queloz, and the winner of the 2010 Viktor Ambartsumian International Prize and the 2015 Kyoto Prize.

SETI Institute

The SETI Institute is a not-for-profit research organization incorporated in 1984 whose mission is to explore, understand, and explain the origin and nature of life in the universe, and to apply the knowledge gained to inspire and guide present and future generations. It aims for discovery and for sharing knowledge as scientific ambassadors to the public, the press, and the government. SETI stands for the "search for extraterrestrial intelligence". The Institute consists of three primary centers: The Carl Sagan Center, devoted to the study of life in the universe, the Center for Education, focused on astronomy, astrobiology and space science for students and educators, and the Center for Public Outreach, producing "Big Picture Science," the Institute's general science radio show and podcast, and "SETI Talks" weekly colloquium series.

Australian Astronomical Observatory Observatory

The Australian Astronomical Observatory (AAO), formerly the Anglo-Australian Observatory, was an optical and near-infrared astronomy observatory with its headquarters in North Ryde in suburban Sydney, Australia. Originally funded jointly by the United Kingdom and Australian governments, it was managed wholly by Australia's Department of Industry, Innovation, Science, Research and Tertiary Education. The AAO operated the 3.9-metre Anglo-Australian Telescope (AAT) and 1.2-metre UK Schmidt Telescope (UKST) at Siding Spring Observatory, located near the town of Coonabarabran, Australia.

High Accuracy Radial Velocity Planet Searcher

The High Accuracy Radial Velocity Planet Searcher (HARPS) is a high-precision echelle planet-finding spectrograph installed in 2002 on the ESO's 3.6m telescope at La Silla Observatory in Chile. The first light was achieved in February 2003. HARPS has discovered over 130 exoplanets to date, with the first one in 2004, making it the most successful planet finder behind the Kepler space observatory. It is a second-generation radial-velocity spectrograph, based on experience with the ELODIE and CORALIE instruments.

Leuschner Observatory Observatory

Leuschner Observatory, originally called the Students' Observatory, is an observatory jointly operated by the University of California, Berkeley and San Francisco State University. The observatory was built in 1886 on the Berkeley campus. For many years, it was directed by Armin Otto Leuschner, for whom the observatory was renamed in 1951. In 1965, it was relocated to its present home in Lafayette, California, approximately 10 miles (16 km) east of the Berkeley campus. In 2012, the physics and astronomy department of San Francisco State University became a partner.

James Lick telescope Telescope in California, United States

The James Lick Telescope is a refracting telescope built in 1888. It has a lens 36 inches (91 cm) in diameter- a major achievement in its day. The instrument remains in operation and public viewing is allowed on a limited basis. Also called the "Great Lick Refractor" or simply "Lick Refractor", it was the largest refracting telescope in the world until 1897 and now ranks third, after the 40-inch refractor at the Yerkes Observatory and the Swedish 1-m Solar Telescope. The telescope is located at the University of California's Lick Observatory atop Mount Hamilton at an elevation of 4,209 feet (1,283 m) above sea level. The instrument is housed inside a dome that is powered by hydraulic systems that raise and lower the floor, rotate the dome and drive the clock mechanism to track the Earth's rotation. The original hydraulic arrangement still operates today, with the exception that the original wind-powered pumps that once filled the reservoirs have been replaced with electric pumps. James Lick is entombed below the floor of the observing room of the telescope.

C. Donald Shane telescope

The C. Donald Shane telescope is a 120-inch (3.05-meter) reflecting telescope located at the Lick Observatory in San Jose, California. It was named after astronomer C. Donald Shane in 1978, who led the effort to acquire the necessary funds from the California Legislature, and who then oversaw the telescope's construction. It is the largest and most powerful telescope at the Lick Observatory, and was the second-largest optical telescope in the world when it was commissioned in 1959.

Carnegie telescope

The Carnegie telescope is a twin 20-inch (510 mm) refractor telescope located at Lick Observatory in California, United States. The double telescope's construction began in the 1930s with a grant from the Carnegie institution, although it was not completed until the 1960s when a second lens was added. The telescope is not designed for visual observation, rather it has two lenses used for taking photographs for a specific wavelength recorded on a film emulsion. It was used for photographic sky surveys in the late 20th century, which were successfully completed.

Crossley telescope Reflecting telescope located at Lick Observatory in California

The Crossley telescope is a 36-inch (910 mm) reflecting telescope located at Lick Observatory in the U.S. state of California. It was used between 1895 to 2010, and was donated to the observatory by Edward Crossley, its namesake.

Mount Abu InfraRed Observatory Observatory

The Mount Abu InfraRed Observatory (MIRO) is located near the town Mount Abu in the state of Rajasthan, India. The observatory is at an altitude of 1680 metres and is adjacent to Guru Shikhar, highest peak of the Aravalli Range. The 1.2 m infrared telescope at It is the first major facility in India specifically designed for ground-based, infrared observations of celestial objects. Further the low amount of precipitable water vapour at Guru Shikhar makes it a good site for the infrared telescope observations. The site has been found to be good for astronomical observations.

Steven S. Vogt American astronomer of German descent (born 1949)

Steven Scott Vogt is an American astronomer of German descent whose main interest is the search for extrasolar planets.

The Lick–Carnegie Exoplanet Survey (LCES) is a search for exoplanets using the Keck I optical telescope of the W. M. Keck Observatory in Hawaii. The survey is sponsored by NASA and the National Science Foundation. The survey comprises a decade of observations. The survey is led by Steven Vogt, professor of astronomy and astrophysics at University of California at Santa Cruz, and R. Paul Butler of the Carnegie Institution.

Breakthrough Listen Initiative to search for intelligent extraterrestrial life

Breakthrough Listen is a project to search for intelligent extraterrestrial communications in the Universe. With $100 million in funding and thousands of hours of dedicated telescope time on state-of-the-art facilities, it is the most comprehensive search for alien communications to date. The project began in January 2016, and is expected to continue for 10 years. It is a component of Yuri Milner's Breakthrough Initiatives program. The science program for Breakthrough Listen is based at Berkeley SETI Research Center, located in the Astronomy Department at the University of California, Berkeley.

MINERVA-Australis is a dedicated exoplanet observatory, operated by the University of Southern Queensland, in Queensland, Australia. The facility is located at USQ's Mount Kent Observatory, and saw first light in quarter two 2018. Commissioning of the facility was completed in mid-2019, and the facility was officially launched on 23 July 2019.

Berkeley SETI Research Center

The Berkeley SETI Research Center (BSRC) conducts experiments searching for optical and electromagnetic transmissions from intelligent extraterrestrial civilizations. The center is based at the University of California, Berkeley.

NIROSETI

The NIROSETI is an astronomical program to search for artificial signals in the optical (visible) and near infrared (NIR) wavebands of the electromagnetic spectrum. It is the first dedicated near-infrared SETI experiment. The instrument was created by a collaboration of scientists from the University of California, San Diego, Berkeley SETI Research Center at the University of California, Berkeley, University of Toronto, and the SETI Institute. It uses the Anna Nickel 1-m telescope at the Lick Observatory, situated on the summit of Mount Hamilton, east of San Jose, California, USA. The instrument was commissioned on 15 March 2015 and has been operated for more than 150 nights.

References

  1. 1 2 3 4 5 "Telescopes of the Lick Observatory". University of California Observatories. 2015. Retrieved 2016-08-23.
  2. 1 2 Steven S. Vogt et al., APF - The Lick Observatory Automated Planet Finder , 26 February 2014.
  3. Powell, Hugh. "Major gift supports crucial piece of Automated Planet Finder". UC Santa Cruz. Archived from the original on 2008-06-13.
  4. Perlman, David (August 21, 2010). "Automated Planet Finder telescope seeks life". San Francisco Chronicle.
  5. UCO Director Newsletters: Newsletter #6 October 2009
  6. "Mt. Hamilton Telescopes: Carnegie Double Astrograph".
  7. Zhang, Sarah (20 July 2015). "A Russian Tycoon Is Spending $100 Million to Hunt for Aliens". Wired.