GREGOR Solar Telescope explained
GREGOR is a solar telescope, equipped with a 1.5 m primary mirror,[1] located at 2,390 m altitude at the Teide Observatory on Tenerife in the Canary Islands. It replaces the older Gregory Coudé Telescope and was inaugurated on May 21, 2012.[2] [3] First light, using a 1 metre test mirror, was on .[4] [5]
GREGOR is the third-largest solar telescope in the world, after the Big Bear Observatory and the McMath-Pierce solar telescope. It is aimed at observing the solar photosphere and chromosphere at visible and infrared wavelengths. GREGOR sports a high-order adaptive optics (AO) system with a 256-actuator deformable mirrors and a 156-subaperture Shack-Hartmann wavefront sensor. Efforts are underway to implement multi-conjugate AO in 2014.[6]
2020 upgrade
Initial astigmatism was fixed during an upgrade with some corrective optics: two off-axis parabolic mirrors.[7]
See also
Sources
Notes and References
- Web site: Präziser Blick in die Sonne dank temperaturstabiler Glaskeramik . 2012-05-30 . 2016-04-14 . 2019-03-29 . https://web.archive.org/web/20190329090028/https://www.schott.com/english/news/press.html?NID=com3688 . dead .
- Web site: GREGOR Telescope. KIS website. Kiepenheuer-Institut für Sonnenphysik. 11 January 2014.
- Web site: GREGOR. IAC website. Instituto de Astrofísica de Canarias. 11 January 2014.
- First light was obtained with a 1-meter test-mirror due to manufacturing issues with the main mirror
- Web site: GREGOR telescope: Zooming in on the sun. phys.org website. phys.org. 11 January 2014. May 10, 2012.
- Web site: GREGOR Optical Design. KIS website. Kiepenheuer-Institut für Sonnenphysik. 11 January 2014.
- https://www.spacedaily.com/reports/Europes_largest_Solar_Telescope_GREGOR_unveils_magnetic_details_of_the_Sun_999.html Europe's largest Solar Telescope GREGOR unveils magnetic details of the Sun Sept 2020
