The context keywords allow to control the parameters of the reduction process. The keywords can be listed together with their current contents by the command SHOW/FEROS and are set with the command SET/FEROS key=[value].
If the keywords are set to new values, they will only affect the automatic on-line DRS for next incoming files. If one of the files already transfered to the IWS (fero[filenum].mt should be reduced again according to the new settings of the keywords, this is easily achieved by re-starting the @@ autoreduce command manually as follows:
@@ autoreduce fero [filenum]
Useful keywords for the observing session might be:
Command | parameters |
INITIALIZE/FEROS | name |
SAVE/FEROS | name |
SHOW/FEROS | param |
SET/FEROS | param=value |
SAVINIT/FEROS | filename accessmode |
HELP/FEROS | param |
KEYDEL/FEROS | |
DEFINE/FEROS | inimage intable outtable locval thres locpar |
BACKGR/FEROS | raw flat centab bgmode bgparam medparam fibmode |
RECTIFY/FEROS | image straightimage centab profilepar |
EXTRACT/FEROS | straightimage extimage extpar params ccdpar coptab |
FLAT/FEROS | inspec flatspec outspec |
SEARCH/FEROS | spec linepar linepos meth linetype |
CALIBRATE/FEROS | linetab reftab instpar coefftab centertab getcoeffs |
REBIN/FEROS | extimage linetab rebimage scale step meth |
MERGE/FEROS | inimage outimage params method |
TUTORIAL/FEROS |
Keyword | default value | description |
RAW_IMG/C/1/80 | flat2d | name of raw image |
WLC_IMG/C/1/80 | wlc2d | name of wlc image |
GUESS_TBL/C/1/80 | echpos | name of guess table |
CENTER_TBL/C/1/80 | centers | name of order position table |
LOC_CUTSTEP/I/1/1 | 10 | cut step for order definition |
LOC_WINDOW/I/1/1 | 17 | window size for order definition |
FIT_DEG/I/1/1 | 5 | order polynomial fit degree |
LOC_THRES/R/1/1 | 0.9 | background level in order definition |
LOC_MODE/C/1/1 | G | definition mode; valid values: S,G |
LOC_METHOD/C/1/1 | R | definition method; valid values: R,A |
CUTS_IMG/C/1/80 | cuts | cuts image |
FOLD_IMG/C/1/80 | fold | fold image |
TEMPL_IMG/C/1/80 | template | input template image |
TEMPLT_IMG/C/1/80 | templatet | output template image |
FIT_IMG/C/1/80 | fitted_img | root name if fitted profiles image |
MASK_IMG/C/1/80 | mask_img | root name of masked pixels image |
INIT_TBL/C/1/80 | init | init table |
FLAT_IMG/C/1/80 | nobg2d | name of flatfielded image |
FLATEXT_IMG/C/1/80 | flatxtrctd | name of extracted flatfield image |
UNBLAZED_IMG/C/1/80 | unblazed | name of unblazed image |
BG_MODE/C/1/1 | B | background determination mode; valid values: B,N,S |
BG_STEPX/I/1/1 | 51 | step in x for background determination |
BG_STEPY/I/1/1 | 51 | step in y for background determination |
BG_WIDTHX/I/1/1 | 21 | width in x for background determination |
BG_WIDTHY/I/1/1 | 45 | width in y for background determination |
BG_MEDIANX/I/1/1 | 4 | median filter size in x |
BG_MEDIANY/I/1/1 | 11 | median filter size in y |
BG_DIST/I/1/1 | 50 | minimum distance between orders |
STRAIGHT_IMG/C/1/80 | straightened | root name of straightened image |
PROFILE_W/I/1/1 | 15 | width of spatial profile |
FIBER_OFF1/I/1/1 | -9 | shift of fiber 1 |
FIBER_OFF2/I/1/1 | 9 | shift of fiber 2 |
FIBER_MODE/I/1/1 | 2 | number of fibers |
IMG_WRITE/C/1/1 | N | write additional images |
EXT_IMG/C/1/80 | extracted | root name of extracted image |
Keyword | default value | description |
SPECTR_TYPE/C/1/1 | G | spectrograph type; valid values: F,G |
EXT_MODE/C/1/1 | S | extraction mode; valid values: S,O,M |
PROFILE_GET/C/1/1 | N | get spatial profile from spectrum; valid Y,N |
EXT_ITER/I/1/1 | 3 | maximum iterations in optimum extraction |
CCD_RON/R/1/1 | 3.5 | readout noise of CCD (optimum extraction) |
CCD_GAIN/R/1/1 | 0.66 | gain of CCD (optimum extraction) |
CCD_THRES/R/1/1 | 4.0 | clipping threshold (optimum extraction) |
CCD_ROT/R/1/1 | 2.4 | rotation of CCD |
CCD_SHIFT/R/1/1 | 0.0 | shift of CCD in x direction |
COEF_COP/C/1/80 | cop_coeff | root name of cross order profile coefficient table |
COEF_WLC/C/1/80 | wlc_coeffs | root name of wavelength calibration coefficient table |
INIT_WLC/C/1/1 | C | get dispersion coefficients from spectrum; valid values: G,C,W |
ORDER_FIRST/I/1/1 | 25 | first order on CCD |
ORDER_LAST/I/1/1 | 63 | last order on CCD |
LINE_W/I/1/1 | 5 | width of spectral line |
LINE_THRES/R/1/1 | 10000 | background level |
LINE_POS_TBL/C/1/80 | found_lines | root name of found line table |
LINE_MTD/C/1/80 | gauss | line search method; valid values: GRA,MAX,MIN,GAUSS |
LINE_TYPE/C/1/80 | emission | line type; valid values: EMIS,ABSORP |
LINE_REF_TBL/C/1/80 | ThAr50000 | name of laboratory wavelength table |
ID_ALPHA/R/1/1 | 0.2 | alpha value for line identification |
ID_TOL/R/1/1 | 0.2 | tolerance value for line identification |
ID_THRES/R/1/1 | 0.0 | intensity threshold for first step of line identification |
SPECTR_G/R/1/1 | 79.0 | grating constant (lines/mm) |
SPECTR_F/R/1/1 | 410.0 | focal length of camera (mm) |
SPECTR_THB/R/1/1 | 63.4 | blaze angle of spectrograph (degrees) |
REBIN_IMG/C/1/80 | rebinned | root name of rebinned spectrum |
REBIN_SCL/C/1/1 | I | scaling of rebinned spectrum (lInear or lOgarithmic) |
valid values: I,O | ||
REBIN_STEP/R/1/1 | 0.03 | wavelength step of rebinned spectrum |
REBIN_MTD/C/1/1 | S | rebinning method; valid values: L,Q,S |
MERGE_IMG/C/1/80 | merged | root name of merged spectrum |
MERGE_MTD/C/1/12 | SINC | Merging methods: NOAPPEND,AVERAGE,SINC |
(Associated command MERGE/FEROS) | ||
MERGE_DELTA/R/1/1 | 1.0 | Wav. interval to be skipped (MERGE_MTD=AVERAGE) |
MERGE_ORD/I/1/2 | 0,0 | Ord1,Ord2 (MERGE_MTD=NOAPP). 0,0:all orders |