slist: List spectrum headers

Package: ctioslit

Usage

slist1d input records

Parameters

input: The image root name for the spectra to be listed.

records: The record string for the spectra to be listed. The records will be appended to the root name to form image names of the type "root.xxxx".

long_header = no: If set to yes, then a complete listing of the header elements is given. If set to no, then a single line per spectrum is given which lists in the following order: the image name, object or sky spectrum, exposure time, spectrum length, and image title.

Description

Each spectrum in the list implied by the root name and the record string is opened and the header is read. The pixel file is not accessed in order to save time. The header listing is directed to STDOUT and may be redirected for printing.

A warning message is issued if a requested image is not found, but otherwise proceeds.

Examples

The following example lists 8 spectral headers in long form on the printer:

cl> slist1d nite1 1001-1008 | lprint

The next example lists the same spectral headers but in short form on the terminal

cl> slist1d nite1 1001-1008 long-

Revisions

SLIST1D V2.10: This task is the same as V2.9 slist and applies only to the older IRS/IIDS record extension spectra. In V2.10 slist has been revised for multiaperture spectra.

Bugs

SLIST1D does not inform the user if the pixel file can or cannot be read.