Purpose

Inserts the specified grating and then sets to the
requested wavelength.

Usage

grating [-mswave] graname [wavelen]

Arguments

mswave

a slitmask instead of a longslit

graname

wavelen

the wavelength is assumed to be a LONGSLIT wavelength.
Note that if the mirror is being requested,
no wavelength is specified. The script will
automatically set to the imaging angle.

Restrictions

None

Exit values

0 = normal completion
1 = wrong number of arguments
2 = move already in progress

Example

1) Select the 300/5000 grating with longslit central wavelength 5678A

grating 300/5000 5678

2) Select the 300/5000 grating with central wavelength 5678A

for a slitmask)

grating -mswave 300/5000 5678

3) Select the mirror and set to the nominal imaging position

grating mirror