<title>Hectochelle: a multiobject echelle spectrograph for the converted MMT</title>

Abstract

The Hectochelle will be a fiber-fed, multi-object spectrograph for the post-conversion MMT which will take 255 simultaneous spectra at a resolution of 32,000 - 40,000. The absolute efficiency, including optical fiber losses, is predicted to be 6% - 10%, depending on the position of a line within a diffractive order. In one hour, features with 60 mangstrom should be resolved in m<SUB>R</SUB> equals 18 stars with a signal to noise of 10.