The DeVeny brings optical spectroscopic capability to the LDT.
The DeVeny is the former Kitt Peak White Spectrograph, now on permanent loan to Lowell Observatory. It has been in service for a number of years at the 1.8-meter Perkins telescope, but as of February, 2015, it has been installed at the LDT. It has recently been upgraded with a new 4K x 4K e2v CCD, thanks to a generous grant from the Mount Cuba Astronomical Foundation.
The spectrograph provides low-resolution optical spectra at R500-4000 over 3200 Å – 1 micron, with a slit length up to 4 arcmin on the Perkins 72” telescope. The grating complement currently includes 1200 g/mm-5000 Å, 400 g/mm-8500 Å, 2160 g/mm-5000 Å, and 300 g/mm-5000 Å 1st-order blazed gratings; other stock rulings are commercially available. The instrument includes pre and post-slit neutral density and order-sorting filters that can be manually placed in the beam. The slit, decker, and the focus of the collimator and camera are also adjusted manually. The grating tilt is motorized. Halogen lamps and Hg/Ne/Ar/Cd lamps are available for flat fielding and wavelength calibration.