Goodman High Throughput Spectrograph

Updated May 25, 2020 (César Briceño)
Instrument Scientist: Sean Points
CTIO Support Scientists: Sean Points, Regis Cartier, Alfredo Zenteno, César Briceño
CTIO/Chile Goodman Support: Goodman Support
SOAR/Brazil Support: 
GOODMAN Updates - Mar 2020:
  1. We improved the alignment of the 600_old grating within its holder. Spectra produced by this grating are now more horizontal an better centered in the vertically on the detector. Details of the work done and results can be found in this technical report.
  2. We are still using the COSMOS GG395 square 4x4 inch filter. Users have to explicitly request this filter in their Instrument Setup form.

The Goodman High Throughput Spectrograph (GTHS) was built in the Goodman Laboratory at the University of North Carolina under the leadership of Prof. J. Christopher Clemens. It is an imaging spectrograph, capable of producing excellent image quality across a 7.2 arcmin diameter FOV (with a 0.15 arcsec/pixel scale), and spectra at various resolutions from the atmospheric UV cutoff all the way out to 850nm. It employs all transmissive optics, and Volume Phase Holographic (VPH) Gratings to achieve the highest possible throughput for low resolution spectroscopy over the 320-850 nm wavelength range. The paper describing the instrument is Clemens et al. (2004)