# Copyright(c) 2006-2009 Association of Universities for Research in Astronomy, Inc. # Reducing a spectrum with MSREDUCE # # Note that quite often, the line identification must be done interactively. # The same applies to the telluric correction. # # For more details, see the "Data Reduction" section of the MIchelle webpage: # http://www.gemini.edu/sciops/instruments/michelle/MichIndex.html # Set directory to raw data set rawdir = "/data/michdata/raw/" # Reset configuration unlearn midir unlearn gnirs midir.logfile = "spectro.log" # Run NSHEADERS to configure the GNIRS package for, in this case, Michelle nsheaders michelle # Run MSREDUCE # MSREDUCE will call MPREPARE, and whichever tasks necessary to do what # the several options say it should be doing. The flat field and the # bias frames are prepared and reduced by MSREDUCE. # # When MSABSFLUX calls TELLURIC, one should reset the shift to 0.0, then # iterate: # # :shift 0.0 # # The 'scale' often needs to be modified too (e.g. :scale 1.). # The goal is to get as smooth a spectrum as possible around # 9.5 microns where the ozone feature is seen in the original spectrum. # # In this example, de-fringing is turn off simply because it was not # needed for that spectrum. The default behaviour is to de-fringe. # # WARNING: At this time, MSREDUCE does not allow the user to set output # prefixes, or output file names. Please refer to the MSREDUCE # help page. msreduce N20051218S0083 outtype="fnu" rawpath="rawdir$" fl_std+ std="HD57423" \ fl_flat+ flat=N20051218S0062 bias=N20051218S0063 fl_telluric+ \ fl_wavelength+ fl_extract+ fl_defringe- print ("Please see the Gemini midir webpage for a full example reduction examples") print ("http://www.gemini.edu/sciops/instruments/midir-resources/data-reduction/spectroscopy-reduction")