Alternative names | ASAS |
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Website | www |
The All Sky Automated Survey (ASAS) is a Polish project implemented on 7 April 1997 to do photometric monitoring of approximately 20 million stars brighter than 14 magnitude all over the sky. [1] The automatic telescopes discovered two new comets in 2004 and 2006. The ASAS-South, located in Chile and ASAS-North, located in Hawai'i, are managed by Grzegorz Pojmański of the Warsaw University Observatory via the internet.[ not verified in body ]
The idea was initiated by the Polish astronomy Professor Bohdan Paczyński of Princeton University. The prototype instrument and data pipeline were designed and built by Grzegorz Pojmański. The work on the ASAS program began in 1996 with a mere $1 million budget. The automatic telescope, located in Las Campanas Observatory, Chile, was designed to register the brightness of circa one million stars in the Southern Hemisphere. However, it proved very efficient and helped to find many new variable stars. The project was then expanded, and now operates four telescopes located in Las Campanas Observatory. The Chilean observatory is operated by the Carnegie Institution of Washington. [2]
So far, ASAS has discovered 50,000 variables located south of declination +28°, which means that it has covered 3/4 of all the sky. Pojmański comes to Chile only once every year. The telescope works automatically. Routine work such as exchanging of the data is done by the Optical Gravitational Lensing Experiment (OGLE) observers. Such an intervention is needed once a week. On each starry night when an OGLE observator opens or closes the dome, the ASAS booth is opened or closed automatically. [3]
Grzegorz Pojmański is supported in the project by the State Committee for Scientific Research, Poland. The project is assisted by OGLE observers. Paczyński was supported by William Golden.[ citation needed ]
The prototype ASAS instrument, equipped with 768x512 Kodak CCD and 135/1.8 telephoto lens, and mounted on the computer controlled robotic mount, operated from 7 April 1997 until 6 June 2000. Prototype took about 15 3-minute exposures (covering 90 sq. deg.) per hour (over 120 per night) with limiting I-magnitude 13 and resolution of 14 arcsec/pixel. Initial setup consisted of 24 fields covering 150 sq. deg. (later increased to 50 fields - 300 sq. deg) monitored few times each night. [4]
ASAS 2 results obtained during 1997-2000 available at the ASAS website contain:[ citation needed ]
On 6 June 2000 the ASAS-3 system replaced the low-cost prototype. It consists of two wide-field 200/2.8 instruments, one narrow-field 750/3.3 telescope and one super-wide 50/4 scope. Each of them is equipped with the Apogee 2Kx2K CCD camera, located in the custom-made automated enclosure.[ citation needed ]
In April 2002 ASAS-3 was expanded and is now housing four instruments. The fourth one is a very-wide-field scope equipped with the 50 mm lens and another AP-10 camera. It features 36x26 deg. FOV and observes only a few selected fields in purpose to test instrument sensitivity for fast transient events.
ASAS-3 is directly connected to the BACODINE General Coordinates Network and is ready for immediate follow-up observations of GRB events. [5]
ASAS-3 results obtained since the year 2000 are available at the ASAS website:[ citation needed ]
Number of stars observed by ASAS[ when? ]: approx. 15 million. Number of detected variables: approx. 50,000. Number of new variables: approx. 39,000.[ citation needed ]
(predisc. autom. detection) = object was independently detected by the ASAS Alert System before official discovery, but was not verified by a human until later. [1]
Since 1 March 2003 the ASAS data reduction pipeline is working in real time. All photometric data is available through a web interface within 5 minutes after exposure. [9]
Messier 13 or M13, is a globular cluster of several hundred thousand stars in the constellation of Hercules.
Palomar Observatory is an astronomical research observatory in the Palomar Mountains of San Diego County, California, United States. It is owned and operated by the California Institute of Technology (Caltech). Research time at the observatory is granted to Caltech and its research partners, which include the Jet Propulsion Laboratory (JPL), Yale University, and the National Astronomical Observatories of China.
Bohdan Paczyński or Bohdan Paczynski was a Polish astronomer notable for his theories and work in the fields of stellar evolution, accretion discs, and gamma ray bursts. He is the recipient of the Eddington Medal (1987), the Henry Draper Medal (1997), the Gold Medal of the Royal Astronomical Society (1999), and the Order of Polonia Restituta (2007).
Stardome Observatory is a public astronomical observatory situated in Maungakiekie/One Tree Hill Domain in Auckland, New Zealand.
The Sloan Digital Sky Survey or SDSS is a major multi-spectral imaging and spectroscopic redshift survey using a dedicated 2.5-m wide-angle optical telescope at Apache Point Observatory in New Mexico, United States. The project began in 2000 and was named after the Alfred P. Sloan Foundation, which contributed significant funding.
The National Geographic Society – Palomar Observatory Sky Survey was a major astronomical survey, that took almost 2,000 photographic plates of the night sky. It was conducted at Palomar Observatory, California, United States, and completed by the end of 1958.
La Silla Observatory is an astronomical observatory in Chile with three telescopes built and operated by the European Southern Observatory (ESO). Several other telescopes are located at the site and are partly maintained by ESO. The observatory is one of the largest in the Southern Hemisphere and was the first in Chile to be used by ESO.
Siding Spring Observatory near Coonabarabran, New South Wales, Australia, part of the Research School of Astronomy & Astrophysics (RSAA) at the Australian National University (ANU), incorporates the Anglo-Australian Telescope along with a collection of other telescopes owned by the Australian National University, the University of New South Wales, and other institutions. The observatory is situated 1,165 metres (3,822 ft) above sea level in the Warrumbungle National Park on Mount Woorat, also known as Siding Spring Mountain. Siding Spring Observatory is owned by the Australian National University (ANU) and is part of the Mount Stromlo and Siding Spring Observatories research school.
An astronomical survey is a general map or image of a region of the sky that lacks a specific observational target. Alternatively, an astronomical survey may comprise a set of images, spectra, or other observations of objects that share a common type or feature. Surveys are often restricted to one band of the electromagnetic spectrum due to instrumental limitations, although multiwavelength surveys can be made by using multiple detectors, each sensitive to a different bandwidth.
The Panoramic Survey Telescope and Rapid Response System located at Haleakala Observatory, Hawaii, US, consists of astronomical cameras, telescopes and a computing facility that is surveying the sky for moving or variable objects on a continual basis, and also producing accurate astrometry and photometry of already-detected objects. In January 2019 the second Pan-STARRS data release was announced. At 1.6 petabytes, it is the largest volume of astronomical data ever released.
Grzegorz Pojmański, is a Polish astronomer and professor at the Warsaw University Astronomical Observatory, Poland. In 1997 Pojmański together with professor Bohdan Paczyński implemented the project All Sky Automated Survey (ASAS). With the ASAS Alert System Pojmański discovered two new comets: C/2004 R2 (ASAS) and C/2006 A1 (Pojmański). Pojmański connects with the ASAS automatic telescope located in Las Campanas Observatory, Chile, via Internet.
The Optical Gravitational Lensing Experiment (OGLE) is a Polish astronomical project based at the University of Warsaw that runs a long-term variability sky survey (1992–present). The main goals are the detection and classification of variable stars, discovery of microlensing events, dwarf novae, and studies of the structure of the Galaxy and the Magellanic Clouds. Since the project began in 1992, it has discovered a multitude of extrasolar planets, together with the first planet discovered using the transit method (OGLE-TR-56b) and gravitational microlensing. The project has been led by professor Andrzej Udalski since its inception.
Comet Pojmański is a non-periodic comet discovered by Grzegorz Pojmański on January 2, 2006, and formally designated C/2006 A1. Pojmański discovered the comet at Warsaw University Astronomic Observatory using the Las Campanas Observatory in Chile as part of the All Sky Automated Survey (ASAS). Kazimieras Cernis at the Institute of Theoretical Physics and Astronomy at Vilnius, Lithuania, located it the same night and before the announcement of Pojmański's discovery, in ultraviolet images taken a few days earlier by the SWAN instrument aboard the SOHO satellite. A pre-discovery picture was later found from December 29, 2005.
The Skalnaté Pleso Atlas of the Heavens is a set of 16 celestial charts covering the entire sky. It is named after the Skalnaté Pleso Observatory in Slovakia where it was produced. The first versions were published by the Czechoslovak Astronomical Society in 1948; later that year, Sky Publishing Corporation acquired the copyright and began publication in the United States. The charts were hand-drawn by Antonín Bečvář.
Time-domain astronomy is the study of how astronomical objects change with time. Though the study may be said to begin with Galileo's Letters on Sunspots, the term now refers especially to variable objects beyond the Solar System. Changes over time may be due to movements or changes in the object itself. Common targets included are supernovae, pulsating stars, novas, flare stars, blazars and active galactic nuclei. Visible light time domain studies include OGLE, HAT-South, PanSTARRS, SkyMapper, ASAS, WASP, CRTS, GOTO and in a near future the LSST at the Vera C. Rubin Observatory.
IRC −10414 is a red supergiant and runaway star in the constellation Scutum, a rare case of a red supergiant with a bow shock.
The All Sky Automated Survey for SuperNovae (ASAS-SN) is an automated program to search for new supernovae and other astronomical transients, headed by astronomers from the Ohio State University, including Christopher Kochanek and Krzysztof Stanek. It has 20 robotic telescopes in both the northern and southern hemispheres. It can survey the entire sky approximately once every day.
C/2017 O1 (ASASSN) is a comet discovered by the All Sky Automated Survey for SuperNovae (ASAS-SN). It was first detected on July 19, 2017, located in the southern constellation Cetus.
The Astronomical Observatory University of Warsaw is an institute that conducts astronomical research and teaching in astronomy. It is a part of Faculty of Physics University of Warsaw. The Observatory provides astronomy classes for BSc, MSc, and PhD students. Student telescope activities take place at the observing station in Ostrowik. The scientific research is conducted in a wide range of topics. Two main observing projects are long-term sky surveys: OGLE and ASAS. Both surveys take data using dedicated telescopes located at the Las Campanas Observatory, Chile. Scientific staff takes part in large astrophysical collaborations, both ground-based and satellite.