Upgrade of SINFONI

Published: 28 Feb 2016
SINFONI in the lab

SINFONI was dismounted from UT4 on 20 December 2015 and upgraded during January 2016. The upgrade included a new pre-optics collimator, new J, H and K filters, a new baffle at the entrance focal plane, and new collimator mirrors. In addition, the membrane mirror of the MACAO adaptive optics system was replaced. SINFONI re-commenced routine observations at the end of January 2016.

While at time of writing the performance of SINFONI is being assessed, at least the following improvements have been observed:

  1. A significant increase in the overall J-band throughput, especially towards shorter wavelengths
  2. Increased spectral resolution in all bands ranging from about 4 to 15%
  3. A spot of dead pixels which previously affected the centre of the field of view is now shifted to the edge of the field of view
  4. The vignetting of slit 32 at the top of the field of view is now much reduced.

Further information will be made available through the SINFONI news page.