Manual Reduction

Manual reduction using ECHOMOP is available at two levels:

A menu driven, guided reduction.

    - ECHMENU     provides menu of all tasks

A completely manual selection of processing steps one after another when required. The set of tasks available to the user at this level consists of the following ECHOMOP specifics:

    - ECH_DECOS1  detects and flags cosmic ray pixels

    - ECH_DECOS2  detects and flags cosmic ray pixels

    - ECH_LOCATE  locates orders in a frame

    - ECH_SLOPE   measure average order slope

    - ECH_TRACE   traces orders already located

    - ECH_TRCSIS  does trace consistency checking

    - ECH_TRPLT   plots order traces graphically

    - ECH_SPATIAL calculates the profiles (spatial)

    - ECH_LINLOC  locates arc lines

    - ECH_IDWAVE  identifies and wavelength calibrates

    - ECH_WVCSIS  does wavelength scale consistency checking

    - ECH_EXTRCT  extracts orders

    - ECH_2DFIT   distortion fitting for an order

    - ECH_2DEXT   extracts distorted orders

    - ECH_MDLBCK  models global scattered light background

    - ECH_FFIELD  calculates flat field balance model

    - ECH_PROFILE calculates object profiles

    - ECH_SKY     calculates sky background

    - ECH_SCRUNCH scrunches extracted orders

    - ECH_TUNER   interactively sets tuning parameters

    - ECH_PLOT    plots/prints all stages of reduction

    - ECH_RESULT  handles flexible output of resulting reduced
                  spectra etc. to .sdf, ASCII format files.

    - ECH_ONE     set single order operations (ICL usage only)

    - ECH_ALL     set all order operations (ICL usage only)

    - ECH_FTRDB   generate a database file using a .ARC line list

These commands may generally be used from an ICL command prompt or from the system shell prompt.