DEIMOS user script grating

Name

grating -- show or select the DEIMOS grating and wavelength

Purpose

With no arguments, print the name of the current DEIMOS
grating and its wavelength. With one argument, selects the
named DEIMOS grating. With two arguments, sets the grating
and the grating wavelength.

Usage

grating [name [wavelen]]

Arguments

name = name of the grating to select
wavelen = wavelength [Angstroms] to set the grating to

Output

- With no arguments, the name of the grating is printed

Restrictions

Exit values

0 = normal completion
1 = wrong number of arguments