Vera C. Rubin Observatory
The Vera C. Rubin Observatory , originally Large Synoptic Survey Telescope (LSST), is a planned reflector telescope with a large field of vision, which can completely photograph the accessible sky in three nights. Construction began in 2011, first light is forecast for 2021, and final completion for the end of 2022.
The location of the telescope will be the 2,682 meter high El Peñón summit of Cerro Pachón in northern Chile . The Gemini South Telescope , the SOAR Telescope and the CTIO Telescopes are in the vicinity . Compared to other telescopes of this size, the Rubin Observatory stands out due to its very large field of view with a diameter of 3.5 ° (the moon and the sun have a diameter of about 0.5 ° when viewed from the earth).
The director of the Rubin Observatory is Anthony Tyson . The operator is the LSST Corporation, an American non-profit company based in Tucson, Arizona. Funding comes from various US institutions such as the National Science Foundation and universities.
On January 6, 2020, the Large Synoptic Survey Telescope (LSST) was renamed NSF Vera C. Rubin Observatory, or Rubin Observatory for short.
optics
In order to achieve the wide angle of view, the telescope consists of three mirrors. The primary mirror has a diameter of 8.4 m and is made from one piece; The tertiary mirror with a diameter of 5.0 m, which is surrounded by the primary mirror in a ring shape, is also integrated in this. Above this is the secondary mirror with a diameter of 3.4 m.
The image is recorded by a 3.2 billion pixel camera with a diameter of 64 cm, in front of which a three- lens corrector sits. The largest lens has a diameter of 155 cm. Various color filters can be used in the corrector to examine specific spectra.
The approximately circular image field captured by the camera is approximately ten square degrees (diameter 3.5 degrees) and therefore has a resolution of 0.2 arc seconds. It is the largest digital camera ever planned, weighing around 2.8 tons, 3 m in length and 1.6 m in diameter. An annual data volume of 6000 terabytes is expected (up to 30 TB per night).
Scientific goals
The main objectives of the investigation are:
- The measurement of weak gravitational lenses to find dark energy and dark matter ;
- The mapping of small objects in the solar system , in particular near-Earth asteroids and objects from the Kuiper Belt, as well as the acquisition of data, which are evaluated with the Sentry monitoring system.
- Observing short-term events such as novae and supernovae ;
- Mapping the Milky Way .
The Rubin Observatory is expected to detect approximately 10 billion stars and 10 billion galaxies. A selection of the recordings is to be published by Google as an updated star map .
Individual evidence
- ↑ HR 3196, the Vera C. Rubin Observatory Designation Act | House Committee on Science, Space and Technology. Retrieved January 4, 2020 .
- ↑ - ( Memento of the original from January 31, 2012 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ LSST Project Schedule | The Large Synoptic Survey Telescope. Retrieved January 4, 2020 .
- ↑ (Engl.) Press release on the siting ( Memento of the original dated June 6, 2014 Internet Archive ) Info: The archive link is automatically inserted and not yet tested. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ lsst.org: The LSST Team
- ^ First national US observatory to be named after a woman! ( English ) lsst.org. Retrieved February 4, 2020.
- ↑ Website lsst.org
- ↑ SKY PATTERNS: The largest digital camera in the world can be built
- ↑ Google Joins Large Synoptic Survey Telescope (LSST) Project ( page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.
See also
Web links
- Official home page
- HULIQ Google participation announcement
- Large Synoptic Survey Telescope: Entering the Era of Petascale Optical Astronomy , SETI Institute , January 2014, (English, @ youtube) accessed on January 16, 2014
Coordinates: 30 ° 14 ′ 34.3 " S , 70 ° 44 ′ 26.1" W.