Sloan Digital Sky Survey (SDSS) Spectrographs

SDSS Spectrographs
SDSS Spectrographs

The Sloan Digital Sky Survey is the most ambitious astronomical survey project ever undertaken. The survey will map in detail one-quarter of the entire sky, determining the position and absolute brightness of more than 100 million celestial objects. It will also measure the distances to more than a million galaxies and quasars. The IDG, in collaboration with Johns Hopkins Astronomers, designed and built the SDSS multi-object spectrographs, which facilitate these distance measurements.

The Instrument Development Group was responsible for the following tasks:

  • Optomechanical design of spectrographs
  • Fabrication and assembly of spectrographs
  • Design and assembly of the control electronics