Goodman High Throughput Spectrograph

Updated Jun 01, 2021 (César Briceño)
Instrument Scientist: Sean Points
CTIO Support Scientists: Sean Points, Alfredo Zenteno, César Briceño
CTIO/Chile Goodman Support: Goodman Support
SOAR/Brazil Support:
GOODMAN Update - Dec 2020:
  1. A new GG395 round filter was acquired and installed. It replaces the GG385 filter. The optical quality of the new filter is good, within required tolerances. An analysis of the Goodman pinhole mask imaged with this filter is available in this link. As with other order-sorting filters, this filter will be permanently installed in the second filter wheel, and therefore users need not request it explicitly in their Instrument Setup form.
  2. We remind users that there is an elevation limit of 79 deg, due to damage to the elevation encoders sustained during the Jan 2019 earthquake.

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)