Pan-STARRS
Pan-STARRS (Abbreviation for Panoramic Survey Telescope And Rapid Response System ) is a ground-based telescope system in an observatory in Hawaii for continuous observation of the starry sky. It has been used since 2010 to search for new asteroids , comets and variable stars . Due to the repeated deep observation of large areas in the sky, the data from Pan-STARRS are also relevant for many other areas of astronomy.
Originally planned but not funded (as of 2018) was an expansion with four 1.8 m telescopes on Mauna Kea and Haleakalā in Hawaii , which simultaneously observe the same sky area to reduce image and measurement errors. The first light of the prototype telescope PS1 on Haleakala was in June 2006. The second telescope, PS2, could be put into operation with the help of a 2016 donation. Active commissioning took place in 2018.
A Pan-STARRS telescope has a very large field of view of 3 °, which is achieved by three corrector lenses with a diameter of about 50 cm after the two mirrors in a Cassegrain arrangement ; the resulting large-size image is processed with a 1.4-billion pixels - CCD sensor detects (60 x 64 sensors with 600 × 600 pixels). Each sensor can move the image vertically and horizontally during a recording in order to compensate for image movement caused by air turbulence. Over 500 pictures are taken per night.
In the first phase of the project, a consortium of 14 institutes from six countries carried out several sky surveys, the data of which has been publicly available since the end of 2016. Although Pan-Starrs has observed every region of the sky about 60 times, only time averages can be found in this database. A new edition of the Pan-STARRS data was published in January 2019. In contrast to the first edition, this database contains astrometric and photometric data as well as the images for each individual observation time.
Results
In June 2011 a comet was discovered with Pan-STARRS 1 and named C / 2011 L4 (PANSTARRS) .
The "PS1-10afx" object was also discovered with this telescope system. It was considered an exploded nine billion years Hypernova that a supernova similar to Type Ia, but it appeared much too bright. In 2013, a faintly glowing galaxy in the foreground was noticed in this region, which had been outshone by the lighter supernova exactly behind it and which bundled the light emitted during the explosion in the direction of the earth as a gravitational lens . As a result, the supernova appeared 30 times brighter than without the magnifying glass effect. On the basis of these observations, astronomers now assume that more such objects will be discovered in the future, because it is considered likely that with increasing distance - somewhere on the path of the supernova radiation to Earth - a gravitational lensing effect can occur.
On October 19, 2017, Pan-STARRS 1 was the first time ever an asteroid was observed that did not come from our solar system. He was baptized 'Oumuamua .
See also
Web links
Individual evidence
- ↑ PS1 Prototype Telescope ( Memento of the original from July 9, 2011 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. pan-starrs.ifa.hawaii.edu, accessed July 26, 2011
- ↑ a b $ 3M Donation for Pan-STARRS
- ↑ Kenneth C. Chambers: Pan-STARRS - The PS1 & PS2 Wide Area NEO Survey and Recent Results . In: Proceedings of the The Advanced Maui Optical and Space Surveillance Technologies Conference, Wailea, Maui, Hawaii . 2018, bibcode : 2018amos.confE ... 9C ( amostech.com [PDF]).
- ^ Chambers, Kenneth C .; Onaka, Peter; Wainscoat, Richard; Magnier, Eugene A .; Pan-Starrs Team: The Pan-STARRS2 facility and the Wide Area Survey for NEOs with Pan-STARRS . In: American Astronomical Society, DPS meeting # 50, id . 310.02 . October 2018, bibcode : 2018DPS .... 5031002C .
- ↑ Optical Layout ( Memento of the original from May 14, 2011 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.
- ↑ Pan-STARRS Releases Largest Digital Sky Survey to the World
- ↑ PS1 Data Release 2
- ↑ Pan-STARRS Telescope Finds New Distant Comet ifa.hawaii.edu, June 16, 2011
- ↑ Manfred Lindinger: Strange star explosion brighter than allowed FAZ April 25, 2014
