<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"> <!--Converted with LaTeX2HTML 98.1p1 release (March 2nd, 1998) originally by Nikos Drakos (nikos@cbl.leeds.ac.uk), CBLU, University of Leeds * revised and updated by: Marcus Hennecke, Ross Moore, Herb Swan * with significant contributions from: Jens Lippmann, Marek Rouchal, Martin Wilck and others --> <HTML> <HEAD> <TITLE>Description of FEROS keywords</TITLE> <META NAME="description" CONTENT="Description of FEROS keywords"> <META NAME="keywords" CONTENT="vol2"> <META NAME="resource-type" CONTENT="document"> <META NAME="distribution" CONTENT="global"> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> <LINK REL="STYLESHEET" HREF="vol2.css"> <LINK REL="next" HREF="node708.html"> <LINK REL="previous" HREF="node706.html"> <LINK REL="up" HREF="node696.html"> <LINK REL="next" HREF="node708.html"> </HEAD> <BODY > <!--Navigation Panel--> <A NAME="tex2html10319" HREF="node708.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="icons.gif/next_motif.gif"></A> <A NAME="tex2html10316" HREF="node696.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="icons.gif/up_motif.gif"></A> <A NAME="tex2html10310" HREF="node706.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="icons.gif/previous_motif.gif"></A> <A NAME="tex2html10318" HREF="node1.html"> <IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="icons.gif/contents_motif.gif"></A> <BR> <B> Next:</B> <A NAME="tex2html10320" HREF="node708.html">Using the FEROS software</A> <B> Up:</B> <A NAME="tex2html10317" HREF="node696.html">FEROS</A> <B> Previous:</B> <A NAME="tex2html10311" HREF="node706.html">Order merging</A> <BR> <BR> <!--End of Navigation Panel--> <H1><A NAME="SECTION0037110000000000000000"> Description of FEROS keywords</A> </H1> This is the full list of FEROS keywords, with a short description of their meaning. <P> <P> =20pt<EM>RAW_IMG/C/1/80</EM> - Name of the image used for order definition. <P> <P> =20pt<EM>WLC_IMG/C/1/80</EM> - Name of the raw wavelength calibration frame. This keyword is used only for the on-line version of the FEROS software. <P> <P> =20pt<EM>GUESS_TBL/C/1/80</EM> - Name of table with the approximate order position. Use in the order definition. <P> <P> =20pt<EM>CENTER_TBL/C/1/80</EM> - Name of the table where the detected order position are stored. <P> <P> =20pt<EM>LOC_CUTSTEP/I/1/1</EM> - Step size in pixel for the cuts used to follow the orders. <P> <P> =20pt<EM>LOC_WINDOW/I/1/1</EM> - Window size in pixel used for the cross-correlation for order definition. <P> <P> =20pt<EM>FIT_DEG/I/1/1</EM> - Order of the polynomial used for description of the order positions. <P> <P> =20pt<EM>LOC_THRES/R/1/1</EM> - Background level in the cross-correlation used to follow the orders. <P> <P> =20pt<EM>LOC_MODE/C/1/1</EM> - Mode used for order definition. Valid values are S for peak searching and G for using a guess table. <P> <P> =20pt<EM>LOC_METHOD/C/1/1</EM> - Centering method for order definition. Valid values are R for center of gravity and A for gaussian centering. <P> <P> =20pt<EM>CUTS_IMG/C/1/80</EM> - Name of the image where the cuts through the order definition frame are stored. <P> <P> =20pt<EM>FOLD_IMG/C/1/80</EM> - Name of the image where the cross-correlations are stored. <P> <P> =20pt<EM>TEMPL_IMG/C/1/80</EM> - Name of the template image for the first step in order definition. <P> <P> =20pt<EM>TEMPLT_IMG/C/1/80</EM> - Name of the frame where the secondary templates extracted from the order definition frame are stored <P> <P> =20pt<EM>FIT_IMG/C/1/80</EM> - Name of the frames where the fitted cross-order profiles are stored <P> <P> =20pt<EM>MASK_IMG/C/1/80</EM> - Name of the mask frame where the detected cosmics are stored <P> <P> =20pt<EM>INIT_TBL/C/1/80</EM> - Name of the table with saved FEROS keywords <P> <P> =20pt<EM>FLAT_IMG/C/1/80</EM> - Name of the background subtracted image <P> <P> =20pt<EM>FLATEXT_IMG/C/1/80</EM> - Name of the extracted flat-field image. This is a pixel-order frame. <P> <P> =20pt<EM>UNBLAZED_IMG/C/1/80</EM> - Name of the flat-fielded frame. This is a pixel-order frame. <P> <P> =20pt<EM>BG_MODE/C/1/1</EM> - Mode of background subtraction. Valid values are B for subtract background and N for storing fitted background. <P> <P> =20pt<EM>BG_STEPX/I/1/1</EM> - Step size in x for background determination. This is used for grid for the 2-D spline fit. <P> <P> =20pt<EM>BG_STEPY/I/1/1</EM> - Step size in y for background determination. This is used for grid for the 2-D spline fit. <P> <P> =20pt<EM>BG_WIDTHX/I/1/1</EM> - Width in x for background determination. <P> <P> =20pt<EM>BG_WIDTHY/I/1/1</EM> - Width in y for background determination. <P> <P> =20pt<EM>BG_MEDIANX/I/1/1</EM> - Size of median window in x for median filtering used in background subtraction. <P> <P> =20pt<EM>BG_MEDIANY/I/1/1</EM> - Size of median window in y for median filtering used in background subtraction. <P> <P> =20pt<EM>BG_DIST/I/1/1</EM> - Minimum distance between orders where background is determined between orders. In two-fiber mode, the background is determined in the middle between fibers and between orders. <P> <P> =20pt<EM>STRAIGHT_IMG/C/1/80 </EM> - Root name of rectified image. A 1 or 2 is appended for the two fibers. <P> <P> =20pt<EM>PROFILE_W/I/1/1</EM> - Width of spatial profile for order extraction. <P> <P> =20pt<EM>FIBER_OFF1/I/1/1</EM> - Offset of fiber 1 with respect to the fitted center of the order. <P> <P> =20pt <EM>FIBER_OFF2/I/1/1</EM> - Offset of fiber 2 with respect to the fitted center of the order <P> <P> =20pt<EM>FIBER_MODE/I/1/1</EM> - Number of fibers. Valid values are 1 and 2. This parameter affects order extraction and background determination. <P> <P> =20pt<EM>IMG_WRITE/C/1/1</EM> - Parameter to indicate if additional images should be generated during order extraction. This can used for debugging purposes. <P> <P> =20pt<EM>EXT_IMG/C/1/80</EM> - Root name of extracted image. The character 1 or 2 is appended for fiber 1 and 2, respectively. <P> <P> =20pt<EM>SPECTR_TYPE/C/1/</EM> - Spectrograph type. Valid values are F for single fiber and G for two fibers. This parameter affects order extraction. <P> <P> =20pt<EM>EXT_MODE/C/1/1</EM> - Extraction mode. Valid values are S for standard extraction, O for optimum extraction and and M for standard extraction with masking of cosmics. <P> <P> =20pt<EM>PROFILE_GET/C/1/1</EM> - Get spatial profile from spectrum. Valid values are Y or N. <P> <P> =20pt<EM>EXT_ITER/I/1/1</EM> - Number of iterations in optimum extraction. <P> <P> =20pt<EM>CCD_RON/R/1/1</EM> - Read-out-noise of CCD in electrons. Used for optimum extraction. <P> <P> =20pt<EM>CCD_GAIN/R/1/1</EM> - Gain of CCD in electron/ADU Used for optimum extraction. <P> <P> =20pt<EM>CCD_THRES/R/1/1</EM> - Threshold for clipping of cosmics Used for optimum extraction. <P> <P> =20pt<EM>CCD_ROT/R/1/1</EM> - Rotation angle of CCD in degrees. This affects calibration only in mode G, which is normally not used. <P> <P> =20pt<EM>CCD_SHIFT/R/1/1</EM> - Shift of CCD in x direction with respect to blaze center. This affects calibration only in mode G, which is normally not used. <P> <P> =20pt<EM>COEF_COP/C/1/80</EM> - Root name of cross order profile frame. <P> =20pt<EM>COEF_WLC/C/1/80</EM> - Root name of wavelength calibration coefficient table. <P> <P> =20pt<EM>INIT_WLC/C/1/1</EM> - Get start values for dispersion coefficients. Valid values are G for grating relation, C for coefficients table and W for wavelengths of identified lines. <P> <P> =20pt <EM>ORDER_FIRST/I/1/1</EM> - Order number of first order on CCD. <P> =20pt <EM>ORDER_LAST/I/1/1</EM> - Order number of last order on CCD. <P> <P> =20pt<EM>LINE_W/I/1/1</EM> - Estimated width of spectral lines in pixel. <P> <P> =20pt<EM>LINE_THRES/R/1/1</EM> - Threshold value for line searching. <P> <P> =20pt<EM>LINE_POS_TBL/C/1/80</EM> - Root name of table for storing detected lines. <P> <P> =20pt<EM>LINE_MTD/C/1/80</EM> - Centering method for line search. Valid values are GRAVITY, MAXIMUM, MINIMUM and GAUSS. Normally, GAUSSIAN should be used. <P> <P> =20pt<EM>LINE_TYPE/C/1/80</EM> - Type of spectral lines. Valid values are EMISSION and ABSORPTION. Should be EMISSION. <P> <P> =20pt<EM>LINE_REF_TBL/C/1/80</EM> - Name of laboratory wavelength table. A table with the name ThAr50000 is delivered with FEROS. This is based on a table of wavelengths optimized for a resolution of 50,000 and was kindly supplied by Herman Hensberge. It was extended with lines of Ne, since FEROS also has a Ne lamp and Ne has important lines in the red part of the spectrum. <P> <P> =20pt<EM>ID_ALPHA/R/1/1</EM> - alpha value for line identification. <P> <P> =20pt<EM>ID_TOL/R/1/1</EM> - Tolerance value for line identification. <P> <P> =20pt<EM>ID_THRES/R/1/1</EM> - Intensity threshold for first step of line identification. Only stronger lines will be used for this first step. <P> <P> =20pt<EM>SPECTR_G/R/1/1</EM> - Grating constant in lines/mm. This parameter affects calibration only in mode G, which is normally not used. <P> <P> =20pt<EM>SPECTR_F/R/1/1</EM> - Focal length of camera (mm) This affects calibration only in mode G, which is normally not used. <P> <P> =20pt<EM>SPECTR_THB/R/1/1</EM> - Blaze angle of spectrograph (degrees) This affects calibration only in mode G, which is normally not used. <P> <P> =20pt<EM>REBIN_IMG/C/1/80</EM> - Root name of rebinned spectrum. <P> <P> =20pt<EM>REBIN_SCL/C/1/1</EM> - Scaling of rebinned spectrum valid values are I for lInear and O for lOgarithmic. <P> <P> =20pt<EM>REBIN_STEP/R/1/1</EM> - Wavelength step size for rebinned spectrum. <P> <P> =20pt<EM>REBIN_MTD/C/1/1</EM> - Rebinning method. Valid values are L, Q, S for linear, quadratic and spline, respectively. <P> <P> =20pt<EM>MERGE_IMG/C/1/80</EM> - Root name of merged spectrum. <P> <P> =20pt<EM>MERGE_MTD/C/1/12</EM> - Merging method. Valid values are NOAPPEND, AVERAGE, SINC. The method AVERAGE is not recommended. SINC takes the length of the orders to be averaged into account. It needs a table with the fixed name BLAZE, where the order limits are stored. Method NOAPPEND is used to extract orders into individual files. <P> <P> =20pt<EM>MERGE_DELTA/R/1/1</EM> - Wavelength interval at the edges of orders to be skipped for averaging. Used for MERGE_MTD=AVERAGE. <P> <P> =20pt<EM>MERGE_ORD/I/1/2</EM> - Order numbers Ord1, Ord2 to be extracted. Used for MERGE_MTD=NOAPP. <P> <HR> <!--Navigation Panel--> <A NAME="tex2html10319" HREF="node708.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="icons.gif/next_motif.gif"></A> <A NAME="tex2html10316" HREF="node696.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="icons.gif/up_motif.gif"></A> <A NAME="tex2html10310" HREF="node706.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="icons.gif/previous_motif.gif"></A> <A NAME="tex2html10318" HREF="node1.html"> <IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="icons.gif/contents_motif.gif"></A> <BR> <B> Next:</B> <A NAME="tex2html10320" HREF="node708.html">Using the FEROS software</A> <B> Up:</B> <A NAME="tex2html10317" HREF="node696.html">FEROS</A> <B> Previous:</B> <A NAME="tex2html10311" HREF="node706.html">Order merging</A> <!--End of Navigation Panel--> <ADDRESS> <I>Petra Nass</I> <BR><I>1999-06-15</I> </ADDRESS> </BODY> </HTML>
