Summary of Parameters

IMage

(file) Name of image for input. This should be a file containing an arc spectrum.

ARC_OPTS

(char) Enter arc fit option:

NEW (N)

set up a new wavelength calibration

REPEAT (R)

Iterate on previous calibration.

CLONE (C)

CLone a previous calibration.

YStart

(int) analysis lower limit The data between the limits ystart and yend is extracted and the resultant spectrum is used to locate the lines.

YEnd

(int) analysis upper limit. The data between the limits ystart and yend is extracted and the resultant spectrum is used to locate the lines.

YBlock

(int) Enter analysis x-sect width Each window is of this width (except perhaps the final one).

ITeration

(short) New value of iteration

ORder

(int) order for polynomial fitting This is for the continuity correction of the data. Ideally the arc should have been pre-processed with ARCSDI, so a low order e.g. 2 should be used.

MAXLines

(int) Maximum number of lines to allow room for. This must be greater than or equal to the number of lines fitted, so room should be allowed in case any more are to be added later.

CLfile

(file) Name of image for cloning from. This should be a file containing an arc spectrum.

TOls

(char) For use in batch only

KEEP_ITT

(key) keep iteration files

PRFits

(key) Print out details of fitting