A New Solution for the Dispersive Element in Astronomical Spectrographs
We present a new solution for the dispersive element in astronomical spectrographs that, in many cases, can provide an upgrade path to enhance the spectral resolution of existing moderate-resolution reflection-grating spectrographs. We demonstrate that in the case of LRIS-R at the Keck 1 Telescope, a spectral resolution of 18,000 can be achieved with reasonable throughput under good seeing conditions.
Additional Information© 2010 The Astronomical Society of the Pacific. Received 2009 August 3; accepted 2009 December 7; published 2010 January 26. The authors acknowledge partial support from a grant of seed money from the Keck Observatory to J. Cohen, H. Epps, and R. M. Rich. We thank R. M. Rich for his long-term advocacy for multiplexed high-resolution spectroscopy at the Keck Observatory.
Published - Epps2010p7085Publ_Astron_Soc_Pac.pdf
Accepted Version - 0908.0765.pdf