Module mktrace

source code

Refine a STIS trace table.

- A trace is generated from the science file and a trace
  center is computed.
- The two traces bracketing the trace center are extracted
  from the trace table and interpolated
- The correction is computed as the difference between the
  linear fit to the science and interpolated traces
- The correction is applied to all traces in the trace file
  for that particular OPT_ELEM and CENWAVE
- A new trace table is written to the current directory and
  the relevant keywords are updates in the header of the input file.

Usage:
>>>import mktrace
>>>mktrace.mktrace('file.fits', [tracecen=509.4], [weights=[(x1,x2),(x3,x4)])

Author (IDL): Linda Dressel
Python version: Nadia Dencheva

Imports: N, pyfits, os, ni, conv, gfit, linefit, fu