FORS2 Interventions

FORS2:
Interventions

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Mirror recoating
November 20, 2010: The main mirror (M1) of UT1 is recoated.
Merger
April 1, 2009: FORS2 from now on has the polarization optics and the high throughput filters from FORS1
January - March 2009: Various dismountings and remountings of FORS2 for tests, which usually affect the wavelengths of the spectroscopic modes
Mirror recoating
November 6, 2008: The main mirror (M1) of UT1 is recoated.
Earthquake
May 6, 2008: Earthquake affecting the central wavelengths of the spectroscopic modes.
Maintenance
September 15, 2007: Maintenance.
Mirror recoating
June 25 - July 2, 2007: The main mirror (M1) of UT1 is recoated.
Mirror cleaning
May 10, 2006: The secondary mirror (M2) of UT1 is washed
FORS2 maintenance
March 8, 2006: FORS2 maintenance
Mirror recoating
December 15, 2005: The UT1 main mirror (M1) has been recoated.
FORS2 moved to UT1-Antu
June 1, 2004: FORS2 has been moved from UT4-Yepun to UT1-Antu. First TEST data after telescope change have been obtained on June 5, 2004.
Mirror recoating
October 8, 2003: The UT4 main mirror (M1) has been recoated.
New CCD mounted
March 22, 2002: FORS2 has been upgraded with a new red/IR-optimized MIT mosaic CCD. First observations with the new detector have been obtained on April 1, 2002.
FORS2 moved to UT4-Yepun
May 2001: FORS2 has been moved from UT2-Kueyen to UT4-Yepun. First data after telescope change have been obtained on June 5, 2001.