floydsspec is the executable used to perform the interactive reduction. In this section we will present the syntax and main options available to use this task. When the pipeline is installed, floydsspec should be run in the directory containing the raw FLOYDS data. The script is able to recognize the different types of data and lead the reducer to perform all the steps described above. floydsspec does not need input file lists if all the raw data are in the directory where the user is running it. A list of files can be given as input if the user wishes to reduce only a subset of data. Option “-h” will show all available options.
$floydsspec (basic command) $floydsspec -h (help on options) $floydsspec listfiles (to only reduce data included in listfiles) $floydsspec -i -A (recommended syntax: interactive, automatic [see below]) Usage: floydsspec [listfile -i -A -C --listflat list (use raw flat frames from this list) .....] Options: --version show program's version number and exit -h, --help show this help message and exit -i, --interactive run the script in interactive mode [recommended] -c, --classify try to classify the reduced spectrum using SNID (if installed) -C, --cosmic removes cosmic rays using lacosmic -v, --verbose -A, --Automatic extract spectrum with previous parameters in the database -t, --trace trace extraction with another frame -d, --dispersion interactively choose the disperasion line where aperture and background are selected -r REBIN, --rebin=REBIN rebin blue part [pixels] --fringing=FRINGING fringing correction  response,  computed on 1d images minimizing scatter,  using apflatten --noflat skip flat correction --listsens=LISTSENS use sensitivity curve from this list --listflat=LISTFLAT use the raw frames in this list for the flat --listarc=LISTARC use the raw frames in this list for the arc --listatmo=LISTATMO use the closest telluric file from this list for the telluric correction
The options --listatmo allows you to use a specific telluric file1 to correct for atmospheric absorption from a list of files you provide. The option --listsens allows you to use a specific sensitivity function from a list of sensitivity functions that you provide. These files must have been produced with the FLOYDS pipeline. The option -i turns on the interactive mode for extraction, line identification, wavelengh calibration checking, and computing the sensitivity function. If the interactive mode is not on, all these steps are done automatically. The option -A allows the user to rereduce some of the spectra from one night, but not all. You can choose which spectra to extract again and which ones should be skipped.
The telluric file is a spectrum equal to one everywhere except where there are telluric lines.↩