1
> System - Control - Start - End - Help
2
@@ Execute a MIDAS procedure
3
BYE Terminate the MIDAS session
4
CLEAR/CONTEXT Clear current context level or all levels
5
COMPUTE/KEYWORD Compute values of a keyword
6
COPY/II Copy image frames
7
CREATE/COMMAND Create a user command
8
CREATE/DEFAULTS Create special defaults for MIDAS commands
9
DELETE/COMMAND Delete a user defined command
10
DELETE/DEFAULTS Delete special defaults for command
11
DELETE/IMAGE Delete an image frame
12
DELETE/KEYWORD Delete user defined keyword
13
DELETE/LOG Delete log file
14
ECHO/OFF Suppress display of input from program files
15
ECHO/ON Display input from program files
16
SET/FORMAT Format for ``number-to-string'' conversion
17
HELP Display help info for a command
18
HELP/QUALIFY Get available commands with the given qualifier
19
CREATE/GUI HELP Create the Midas Help GUI
20
LOG/OFF Disable logging
22
PRINT/LOG Print log file
23
READ/KEYWORD Display contents of keywords
24
RUN Execute program inside MIDAS
25
SET/CONTEXT Set new context level
26
SET/MIDAS_SYS Set up different system options
27
WRITE/KEYWORD Store values into a keyword
28
WRITE/OUT Write out text
31
> MCL - Commands - Procedures - Batch - Programming - Monitor
32
The chapter "Using MIDAS" (Chapter 3 in the MIDAS User's Guide, Volume A)
33
contains a detailed description of the MIDAS command language and MIDAS
34
procedures. For interactive info about the command language use the MIDAS
35
command HELP/CL. Existing commands are e.g.:
37
DEFINE/PARAMETER Define default type and valid interval for parameter
38
DEFINE/LOCAL Define local keyword
39
IF ELSE ENDIF Execute conditional statement
40
DO ENDDO Define a DO loop (as in FORTRAN; will always be
41
executed at least once!)
42
BRANCH Do multi-way branching
43
RETURN Return to calling procedure (or terminal) and pass
44
up to 3 parameters back
46
> Debugging - Bugs - Procedures - Application
47
The chapter "Using MIDAS" (Chapter 3 in the MIDAS User's Guide, Volume A)
48
contains a detailed description how to debug MIDAS application code and
49
procedures. The following MIDAS commands can be used:
51
ECHO/ON Display input from MIDAS procedure files
52
ECHO/OFF Suppress display of input from MIDAS procedure files
53
DEBUG/PROC Run MIDAS procedures in debug mode
54
DEBUG/MODULE Run MIDAS (executable) modules in debug mode
56
> I/O - Input - Output - Magtape - Backup - FITS - ASCII_files
57
For information about available tape devices use HELP [TapeDevices].
59
INTAPE/FITS Read data from tape in FITS format
60
OUTTAPE/FITS Write data to tape in FITS format
61
INDISK/FITS Read data from FITS files on disk
62
OUTDISK/FITS Write data to disk in FITS format
63
RESTORE/NAME Change file name to the name stored in descr. FILENAME
64
INDISK/ASCII Read data from ASCII files on disk
65
OUTDISK/ASCII Write image data from disk to ASCII file
67
ASSIGN/INPUT Define input device from where data is to be taken
68
when writing to a MIDAS data structure
69
OPEN/FILE Open an ASCII file for reading or writing
70
READ/FILE Read an ACII file
71
WRITE/FILE Write an ASCII file
72
CLOSE/FILE Close an ASCII file
74
See also the help on [DataOutput] as well as [Host+Midas] for output
75
redirection via `>' or pipes.
77
> Images - BDF - Frames - Files
78
An Image is one of the basic MIDAS data structures consisting of data
79
values (the pixels) and descriptive information about the image stored in
80
descriptors. To get a list of all the commands with qualifier IMAGE use
81
the command HELP/QUALIFY IMAGE or consult the various subject groups.
82
For information about valid syntax for MIDAS filenames use HELP [Filenames].
84
See also HELP/SUBJECT Pixels
85
Image, Display, Graphics, Arithmetic, Filtering, FFT,
86
Coordinates, Transformation, Statistics
89
A Table is one of the basic MIDAS data structures consisting of data values
90
organized in columns and rows and descriptive information about the table
91
stored in descriptors. The chapter "Table File System" (Chapter 5 of the
92
MIDAS User's Guide Volumen A) gives the details about the table file system
93
in MIDAS. To get a list of all commands with the qualifier TABLE use the
94
command HELP/QUALIFY TABLE.
96
COMPUTE/HISTOGRAM Compute histogram for a table column
97
COMPUTE/REGRESSION Compute column from regression coefficients
98
COMPUTE/TABLE Compute arithmetic expression of columns
99
CONVERT/TABLE Compute image from table data
100
COPY/TABLE Copy table files
101
COPY/TT Copy columns from table to table file
102
CREATE/COLUMN Create new column in a table file
103
CREATE/TABLE Create a table file
104
DELETE/COLUMN Delete columns from a table file
105
EDIT/TABLE Edit a table file
106
INTERPOLATE/... Spline interpolation of data
107
LOAD/TABLE Draw symbols at table positions into overlay of display
108
MERGE/TABLE Merge two table files
109
NAME/COLUMN Redefines the label unit or format of table columns
110
PRINT/TABLE Print table
111
PROJECT/TABLE Copy a set of columns from one table into another
112
READ/TABLE List elements of a table file
113
REBIN/... Resampling of data
114
REGRESSION/LIN Compute linear regression
115
REGRESSION/POLYNOMIAL Compute regression between column in table file
116
SELECT/TABLE Select a subtable
117
SHOW/TABLE List table directory
118
SORT/TABLE Sort a table file
119
STATISTICS/TABLE Computes low order statistics for a column
120
WRITE/TABLE Write value in table element
123
> Descriptor - Directory - Header
124
Descriptors are one of the basic MIDAS data structures holding the
125
descriptive information of a MIDAS image or table or fits file.
126
Descriptors correspond to the keywords in the header of a FITS_format file.
127
Use HELP/APPLIC to obtain information about the application procedure
128
`dscedit.prg' (for editing a descriptor). To get a list of all the commands
129
with qualifier DESCR use the command HELP/QUAL DESCR. Information about the
130
standard MIDAS descriptors is available via HELP [Descriptors]. Related
133
COPY/DD Copy descriptors from one file to another
134
DELETE/DESCRIPTOR Delete a descriptor
135
READ/DESCRIPTOR Read descriptors
136
SHOW/DESCRIPTOR Show descriptor tape and length
137
WRITE/DESCRIPTOR Write a descriptor
138
WRITE/DHELP Store help-text/comments for an existing descriptor
139
COPY/DD Copy descriptors of source frame to destination frame
140
COPY/DIMA Copy numerical descriptor of source frame to new image
141
@a dscedit provide editing of descriptors
143
RENAME/... Rename a frame
144
CHANGE/DIREC Change current working directory (in a permanent way)
145
SET/MIDAS_SYS DPATH= Set path for data frames.
146
SET/MIDAS_SYS PATH= Set path for Midas procedures
150
Keywords are one of the basic MIDAS data structures serving as variables for
151
the MIDAS Command Language. To get a list of all the commands with qualifier
152
KEYWORD use the command HELP/QUAL KEYWORD as well as HELP [Keywords].
154
WRITE/KEYWORD Store values into a keyword
155
READ/KEYWORD Display contents of keywords
156
COMPUTE/KEYWORD Compute values of a keyword or compute special function
157
COPY/KEYWORD Copy keywords of same type
158
SHOW/KEYWORD Display contents of keyword data base
159
HELP/KEYWORD Explain contents of given keyword
160
COPY/KD Copy keyword to descriptor of destination frame
161
COPY/KT Copy a keyword into table element
162
DEFINE/LOCAL Define and initialize a local keyword in a procedure
163
See also HELP/SUBJECT Procedures
166
> Catalogue - Catalogues - ICAT - TCAT - FCAT - ACAT
167
In MIDAS there exist catalogues for images, tables, fit files and ASCII
168
files (x = I, T, F, or A). The chapter "Using MIDAS" (Chapter 3 of the
169
MIDAS User's Guide Volume A) contains a section with a detailed description
170
of catalogues in MIDAS.
172
ADD/xCATAL Add one or more entries to a catalogue
173
CREATE/xCATAL Create a catalogue
174
EXECUTE/CATAL Execute a MIDAS procedure or MIDAS command for all
175
entries in a catalogue
176
READ/xCAT Read entries of given catalogue
177
SET/xCAT Make given catalogue the "active" catalog
178
SHOW/xCAT Display the total no. of entries + last entry no. in a
180
SUBTRACT/xCATAL Remove an entry from a catalogue
181
INFO/SETUP Catalog Get info about Catalog setup (for EXECUTE/CATALOG)
183
> Copying - Duplicate - Hardcopy
184
COPY/II Copy source frame to destination frame
185
COPY/IT Creates a new table file from the input image
186
COPY/TI Creates a new image file from the input table
187
COPY/TABLE Copy table files.
188
COPY/TT Copy a table column to another existing table
189
COPY/TK Copy table elements into a keyword
190
COPY/KT Copy a keyword into table element
191
COPY/DD Copy descriptors of source frame to destination frame
192
COPY/DIMA Copy numerical descriptor of source frame to new image
193
COPY/DK Copy descriptor of source frame to keyword
194
COPY/KD Copy keyword to descriptor of destination frame
195
COPY/KEYWORD Copy keywords of same type
196
COPY/DISPLAY Make a hardcopy of the ImageDisplay on output_device
197
COPY/GRAPHICS Copy a plot file to the specified graphic device
200
> Display - Visualization - Viewing
201
The chapter "Graphics and Image Display" (Chapter 6 of the MIDAS User's
202
Guide Volume A) contains a detailed description of the MIDAS display and
203
plotting facilities. Use HELP/APPLIC to obtain information about the
204
application procedure `perspec.prg'.
206
BLINK/CHANNEL Blink between channels
207
CLEAR/ALPHA Clear the alpha-numerics memory
208
CLEAR/CHANNEL Clear and initialize memory channel
209
CLEAR/DISPLAY Reset monitor
210
CLEAR/SPLIT Disable split screen
211
COPY/DISPLAY Hard copy of image display
212
CREATE/DISPLAY Create a display window (using Xwindow)
213
CUTS/IMAGE Set display thresholds for image
214
DELETE/DISPLAY Delete the display windows
215
DISPLAY/CHANNEL Display image loaded into channel
216
DRAW/RECTANGLE Draw rectangle in the overlay plane
217
EXTRACT/CURSOR Extract a subframe from the frame currently displayed
218
EXTRACT/ROTATED Extract a rotated subimage from displayed image
219
EXTRACT/TRACE Extract interactively a line from an image
220
GET/CURSOR Coordinates from display device by cursor
221
GET/IMAGE Read currently loaded image from channel
222
INITIALIZE/DISPLAY Initialize the image display
223
LABEL/DISPLAY Write character string on display device
224
LOAD/IMAGE Load image into display device
225
LOAD/TABLE Display table data on image display
226
MODIFY/CUTS Modify cut values of image interactively
227
MODIFY/DISPLAY Toggle the state of a display window from mapped Window
228
to Icon and vice versa
229
SCROLL/CHANNEL Scroll image on given channel
230
SET/CURSOR Set cursor form and position
231
SET/DISPLAY Define color display control, size of screen etc.
232
SET/SPLIT Enable split screen
233
SHOW/CHANNEL Show information related to channel
234
VIEW/IMAGE View an image with a "looking glass" and get statistics
235
@a perspec Provide perspective view
239
The chapter "Graphics and Image Display" (Chapter 6 of the MIDAS User's
240
Guide Volume A) contains a detailed description of the MIDAS commands
241
working with (pseudo) colors.
243
CLEAR/ITT Bypass ITT on display window
244
CLEAR/LUT Bypass LUT on display window
245
DISPLAY/LUT Display LUT bar at bottom of display
246
GET/ITT Read currently loaded intensity transfer table from
248
GET/LUT Read currently loaded Lookup table from display
249
LOAD/ITT Load an intensity transfer table
250
LOAD/LUT Load a color lookup table into display unit
251
MODIFY/ITT Modify the currently active intensity transfer table
252
MODIFY/LUT Modify the currently active lookup table
253
SET/ITT Enable use of intensity transfer table
254
SET/LUT Enable use of color lookup table
255
TUTORIAL/ITT Explain usage of ITTs in Midas
256
TUTORIAL/LUT Explain usage of LUTs in Midas
257
@a vertlut Display vertical LUT bar with labels
260
> Zoom - Zooming - Magnify - Magnification
261
Some of the zoom command can not or only in a limited version be used on
264
CLEAR/ZOOM Clear zoom
265
CREATE/CURSOR Create a cursor window
266
CREATE/ZOOM Create a zoom window for an existing display window
267
DELETE/CURSOR Delete a cursor window
268
DELETE/ZOOM Delete a zoom window
269
GET/CURSOR Coordinates from display device by cursor
270
VIEW/IMAGE View an image with a "looking glass" and get statistics
271
ZOOM/CHANNEL Zoom image on display
272
ZOOM/OVERLAY Zoom image interactively and also the overlay plane
276
The chapter "Graphics and Image Display" (Chapter 6 of the MIDAS User's
277
Guide, Volume A) contains a detailed description of the MIDAS plotting
280
CLEAR/GRAPHIC Clear graphic screen
281
COPY/GRAPHIC Send the plot file to the specific graphic device
282
CREATE/GRAPHIC Create a graphic window (using Xwindow)
283
CUTS/IMAGE Set plot thresholds (high and low) for image
284
DELETE/GRAPHIC Delete the graphic windows
285
GET/GCURSOR Coordinates from graphic device by cursor
286
LABEL/GRAPHIC Plot text in an existing plot
287
OVERPLOT/COLUMN Overplot a column of an image on existing plot
288
OVERPLOT/ERROR Overplot table error column
289
OVERPLOT/HISTOGRAM Overplot histogram of table column or image
290
OVERPLOT/IMAGE Overplot image data on previous plot
291
OVERPLOT/ROW Overplot a row (line) of an image on existing plot
292
OVERPLOT/TABLE Overplot table data on previous plot
293
OVERPLOT/VECTOR Overplot vector map from two 2-dim. images
294
PLOT/AXES Plot a coordinate box with tickmarks and labels
295
PLOT/COLUMN Plot a column of an image
296
PLOT/CONTOUR Contour plotting of an image
297
PLOT/DESCRIPTOR Plot an entry in a descriptor
298
PLOT/HISTOGRAM Plot a histogram of a table column or an image
299
PLOT/PERSPECTIVE Perspective plotting (3-dim.) of an image
300
PLOT/ROW Plot a row (line) of an image
301
PLOT/TABLE Plot table data
302
PLOT/VECTOR Plot vector map from two 2-dim. images
303
SET/GRAPHIC Set plot characteristics like scaling
304
SHOW/GRAPHIC Show graphic characteristics
305
TUTORIAL/GRAPHICS Explain the use of the graphics package
308
> Printer - Printing - Output
309
Information about the printers installed is available via HELP [Printers].
311
ASSIGN/PRINT Define output device for printing
312
PRINT/IMAGE Print image data values on device specified
313
PRINT/TABLE Print table values on the device/file specified
314
PRINT/DESCR Print descriptor values
315
PRINT/KEY Print contents of keywords
316
PRINT/LOG Print the specified pages of the logfile
319
> Image - Creation - Extraction- Truncate - Insert
320
CREATE/IMAGE Create new image
321
CREATE/RANDOM Create a new image from a random distribution
322
EXTRACT/CURSOR Extract a subframe from the frame displayed
323
EXTRACT/IMAGE Extract part of an image
324
EXTRACT/LINE Extract a line from a frame
325
EXTRACT/SLIT Extract subimage defined by fixed slit
326
EXTRACT/TRACE Extract line from an image
327
INSERT/IMAGE Insert a subimage into father image
328
SHIFT/IMAGE Shift the pixels in an image in x and y-direction
329
TUTORIAL/EXTRACT Demonstrate some of the different EXTRACT commands
332
> Arithmetic - Computing
333
AVERAGE/AVERAGE Compute simple average of all pixels in a subimage
334
AVERAGE/COLUMN Compute average of image columns
335
AVERAGE/IMAGE Calculate the average of images
336
AVERAGE/ROW Compute average of image rows
337
AVERAGE/WINDOW Compare images, then take the meaning
338
COMPUTE/IMAGE Compute arithmetic expression of images
339
COMPUTE/PIXEL Perform arithmetic operations on images using pixel
341
COMPUTE/ROW Compute arithmetic expression on image scan lines
344
> Coordinates - Data - Values - Pixels - Cursor - Mouse - Trackball - Joystick
345
Information about how to use mouse, joystick, etc. is available via
348
CENTER/... Find center
350
GET/CURSOR Coordinates from image display via cursor
351
GET/GCURSOR Show coordinates from graphics picture
352
READ/DESCRIPTOR List reference coordinates
356
WRITE/DESCRIPTOR Write reference coordinates
359
> Aligning - Rebinning - Rotation - Flip
360
ALIGN/IMAGE Calculate linear transformation between 2 images
361
EXTRACT/IMAGE Extract part of image
362
EXTRACT/ROTATED_IMAGE Extract a rotated subimage from displayed image
363
EXTRACT/SLIP Extract a subimage defined by a fixed slit from image
364
FLIP/IMAGE Flip image in x and/or y
365
GROW/IMAGE Repeat one scan line to make 2 dim images
366
INSERT/IMAGE Insert a subimage into father image
367
REBIN/II Logarithmic, exponential, $r^{1/4$ frequency rebin
368
REBIN/IT Nonlinear rebinning of 1D data. Image to Table
370
REBIN/LINEAR Pixel rebinning of image
371
REBIN/ROTATE Rotate an image any angle
372
REBIN/SPLINE Do rebinning of an image via cubic splines using new
373
step sizes and start points
374
REBIN/WAVE Rebin 1-D image to linear wavelength
375
RECTIFY/IMAGE General geometric correction
376
ROTATE/CLOCKWISE Rotate clockwise 90 degrees
377
ROTATE/COUNTER_CLOCK Rotate an image by multiples of 90 degrees
379
TUTORIAL/ALIGN Explain the usage of the ALIGN/IMAGE command
380
TUTORIAL/EXTRACT Demonstrate some of the different EXTRACT commands
383
> Filtering - Cleaning - Smoothing - Convolution - Deconvolution
384
AVERAGE/ ... Compute average of pixels values by various methods
385
CONVOLVE/IMAGE Convolve image with given point spread function
386
CREATE/FILTER Create filter image
387
DECONVOLVE/IMAGE Deconvolve image with given point spread function
388
DECONVOLVE/IMAGE Deconvolve image with point spread function
389
FILTER/GAUSS Use Gauss filter on image
390
FILTER/MEDIAN Median filter image
391
FILTER/SMOOTH Smooth an image
392
TUTORIAL/FILTER Explain the usage of filters
396
> Modification - Pixels - Values
397
PRINT/IMAGE Print an image
398
READ/IMAGE List pixel values into image
399
WRITE/IMAGE Change pixel values in image (world coordinates)
400
ITF/IMAGE Transform pixel values in an image
401
MODIFY/CURSOR Change pixel values in image by cursor
402
MODIFY/GCURSOR Change pixel values in image by graphic cursor
403
MODIFY/PIXEL Change pixel values in image
404
REPLACE/IMAGE Modify pixel values in given intensity interval
405
REPLACE/POLYGON Replace pixel values inside a polygon
409
> Transformations - FFT - Fourier
410
The command FFT will compute the discrete fast Fourier transform using
411
double precision arithmetic internally. The application procedures
412
`convolfft.prg' and `fftfilt.prg' use the FFT to do filtering and
413
convolution/correlation. Use HELP/APPLIC to obtain information about
416
FFT/IMAGE Compute discrete Fourier transform of real or complex
418
FFT/INVERSE Compute inverse discrete Fourier transform of real or
420
FFT/POWER Compute discrete Fourier transform of real or complex
421
frame and also its power spectrum (square root)
422
FFT/FREQUENCY Compute discrete Fourier transform of real or complex
423
frame and shift or origin of frequency domain to center
424
FFT/FINVERSE Compute inverse discrete Fourier transform of real or
426
FFT/FPOWER Compute discrete Fourier transform of real or complex
427
frame and also its power spectrum (square root).
428
@a convolfft Convolve or correlate object image with a PSF via FFT
429
@a fftfilt Filter an object image via FFT
432
> Statistics - Minimum - Maximum - Histogram
433
COMPUTE/HISTOGRAM table-to-image or table-to-table histogram transform
434
EQUALIZE/HISTOGRAM Perform histogram equalization and load ITT to apply it
435
FIND/MINMAX Display (and store) max and min value
436
FIND/PIXEL Find first pixel with a value inside or outside the
438
PLOT/HISTOGRAM Plot histogram of pixel values in image
439
STATISTICS/IMAGE Calculate statistics of an image
440
STATISTICS/TABLE Calculate statistics of a table column
441
@a histogram image-to-image or image-to-table histogram transform
443
> Integrate - Aperture - Magnitudes
444
FIT/FLAT_SKY Fit background image
445
INTEGRATE/APERTURE Integrate flux inside aperture
446
INTEGRATE/LINE Integrate pixel-values over area in image
447
MAGNITUDE/CIRCLE Compute the magnitude of the specified object
448
by integrating over the central area defined
449
by a circular aperture
450
MAGNITUDE/RECTANGLE Compute the magnitude of the specified object
451
by integrating over the central area defined
452
by a rectangular aperture
454
> Julian-date - UT - ST - Sidereal_time - Precession
455
COMPUTE/ST Calculate geocentric Julian date (JD) and local mean
457
COMPUTE/UT Calculate geocentric Julian date (JD) and universal
459
COMPUTE/PRECESSION Precess equatorial coordinates from one epoch to
462
> Fitting - Least_Squares
463
The chapter "Fitting of Data" (Chapter 9 of the MIDAS User's Guide Volume A)
464
gives all information about the capabilities in MIDAS to fit data. To get a
465
list of all the commands with qualifier FIT use the command HELP/QUAL FIT.
467
COMPUTE/FIT Compute fitted image or table
468
COMPUTE/FUNCTION Compute function values of image or table
469
EDIT/FIT Define function for fitting
470
FIT/IMAGE Least squares fitting in image
471
FIT/TABLE Least squares fitting in table
472
PRINT/FIT Print fitted values
473
READ/FIT Read fitted values
474
SELECT/FUNCTION Select functions to be fitted
475
SET/FIT Control execution of fitting
476
SHOW/FIT Display control parameters
480
If you have several frames (at least partially overlapping) of the same
481
object, the following MIDAS commands may be used to get a good average
482
frame from that stack of frames. Use HELP/APPLIC to obtain information
483
about these application procedures.
485
AVERAGE/WEIGHTS Calculate the weighted average of images
486
AVERAGE/IMAGES Calculate the average of images
487
AVERAGE/WINDOW Compute average of (consistent) pixel values
488
@a slicube Extract 2-D frames from a 3-D cube
490
TRANSPOSE/CUBE Rearrange the planes of a cube
491
COMPUTE/PLANE Arithmetic involving different planes of a cube
492
COMPUTE/ZYPLANE Compute arithmetic expr. on the zy_planes of image
497
MIDAS contains two packages to do stellar photometry: ROMAFOT, and DAOPHOT.
498
The first package is described in the chapter ``Crowded Field Photometry''
499
(Chapter 5 of the User's Guide, Volume B). DAOPHOT is described in Chapter 12
500
of that same volume. In addition, MIDAS contains the package INVENTORY
501
for doing object searching and classification, described in Chapter 5 of
502
Volume B: ``Object Searching and Analyzing Commands''.
503
A number of tools for surface photometry are combined in the context
505
Also, the MIDAS User's Guide gives all information about other useful
506
command in the area of photometry like: AVERAGE/WEIGHTS AVERAGE/WINDOW
507
CENTER/GAUSS CENTER/MOMENT COMPUTE/WEIGHTS MAGNITUDE/CENTER MAGNITUDE/CIRCLE
508
INTEGRATE/APERTURE STATISTICS/IMAGE FIT/FLAT_SKY
509
Relevant contexts are: ROMAFOT, DAOPHOT, INVENTORY and SURFPHOT; see HELP
513
MIDAS contains different packages for spectroscopy and spectral analysis.
514
Most of these packages are described in the Volume B of the MIDAS User's
517
Calibration/Reduction packages:
518
-------------------------------
520
a) Package Long allows the calibration and reduction of 1D and long-slit
521
spectra. The package provides a Motif Graphical User Interface.
523
b) Package Echelle allows the calibration of echelle spectra, in particular
524
La Silla instruments (EMMI, CASPEC, ECHELLEC, EFOSC). Pre-calibrated
525
solutions for EMMI are available.
527
c) Package IRSPEC is suited for the reduction of the IRSPEC spectrograph
528
data (installed at the NTT telescope). The package provides a Motif
529
Graphical User Interface.
531
d) Package MOS allows the reduction of multi-object spectra.
533
Spectral Analysis packages:
534
---------------------------
536
a) Package Spec is automatically set by all spectral calibration
537
packages above and provides a number of low-level commands for the
538
spectral calibration as well as basic spectral analysis commands
539
(determine continuum with CONTIN/SPEC or NORMALIZE/SPEC, fit Gaussian
540
profiles to lines with DEBLEND/LINE). Two general Midas commands
541
(CENTER/GAUSS, INTEGRATE/LINE) can also be used. Note that the command
542
CENTER/GAUSS provides an inversion flag for absorption spectra
543
The context Spec also includes commands for the determination of
544
the parallactic angle (COMPUTE/PARAL) and to correct spectra for
545
differential aatmospheric dispersion (REFTRACTION/LONG).
547
b) Graphical User Interface Alice is created with the command
548
CREATE/GUI ALICE and provides continuum fitting and multiple-component
549
Gaussian fitting facilities.
551
c) The context Lyman is specialized to fit inter-galactic absorption
554
d) The context Cloud allows to modelise inter-galactic absorption
added
removed
prim/help/helpwhat.h1
