Quick Reduction of ESI Data Using ESIRedux

As part of the ESIRedux package, there is a routine designed to quickly reduce echellette data using archived calibrations. A fully reduced
1D spectrum is produced in ~8 min of time on the Keck machines. To properly configure the environment variables and library paths, run IDL by typing:

• start_xidl

• You may turn the change directory option off (under preferences)

• Run esi_echqckrdx:
  
  esi_echqckrdx, 'filename'

Options:

1. /CHK will give some graphical output along the way
2. ARCFIL= will specify the arc
3. FLATFIL= will specify the flat
4. REFORDR= will choose the order to find the object in
5. REFWV= (2 element array specifying wavelength range to identify
6. SCICLM= Offset of Object from Slit center. If the program stops in esi_echfndobj, the chances are your object is more than 20 pixels away from the defined slit center. Try rerunning with SCICLM=20 the object in)

Test:

• Test the code by grabbing this file.
• Launch IDL
• Type IDL> esi_echqckrdx, 'esi0068.fits'
• Program should run in about 10min on a fast Sun

Limitations:

• Only works on 1x1 binning right now.
• Not sure if it will work on the 6" slit
• Mainly tested on point sources
• Requires a continuum for tracing [easily modified to take a standard star as the trace]