S Task Index
A
·B
·C
·D
·E
·F
·G
·H
·I
·J
·K
·L
·M
·N
·O
·P
·Q
·R
·S
·T
·U
·V
·W
·X
·Y
·Z
-
sampcum -- Accumulate a MultiAccum image from a set of sample differences.
-
sampdiff -- Compute first differences of samples in a MultiAccum image.
-
sampinfo -- Print sample information for a MultiAccum image.
-
samplepar -- Set image sampling control parameters (pset).
-
samplepars -- Pset with data sampling parameters.
-
saodump -- Make image and colormap files from SAOimage display
-
saolpr -- Print an image from an SAOImage display.
-
sapertures -- Set or change aperture header information
-
sarith -- Spectrum arithmetic
-
sbands -- Bandpass spectrophotometry of spectra
-
scat -- Search a source catalog given a region on the sky.
-
scatterv -- Calculate scattered light contribution.
-
scc_to_utc -- convert from ROSAT spacecraft clock time to UTC
-
schmittbin -- Compute regression coefficients by Schmitt's method.
-
sclean -- Sigma-CLEAN deconvolution of 2-d images.
-
scmapc -- Reformat SAOimage colormap for Celco.
-
scombine -- Combine spectra having different wavelength ranges
-
scoords -- Set spectral coordinates as a pixel array (1D spectra only)
-
scopy -- Select and copy apertures in different spectral formats
-
sdqflags -- Print sum of data quality flags.
-
seam -- Smooth the boundaries between mosaicked WF/PC frames.
-
search_grid -- Perform a chisquared grid search.
-
sections -- Expand an image template on the standard output
-
seepsf -- Compute an image from the point spread function
-
selftest -- Self test program to check DTOI transformation
-
sensfunc -- Create sensitivity function
-
service -- Service a query from a background job
-
set -- Set an environment variable
-
setairmass -- Compute effective airmass and middle UT for an exposure
-
sethead -- Set header keyword values in FITS or IRAF images.
-
setimpars -- Save/restore parameter sets for a particular image
-
setinstrument -- Set instrument parameters
-
setjd -- Compute and set Julian dates in images
-
sex2gol -- Generates a GOL file from an object list
-
sfit -- Fit spectra and output fit, ratio, or difference
-
sflip -- Flip data and/or dispersion coordinates in spectra
-
sflux -- Combine flux data and fit a continuum, to use with fweight.
-
sgidecode -- Decode an SGI format metacode file
-
sgikern -- Simple graphics interface (SGI) graphics kernel
-
sgraph -- Graph one or more image sections or lists.
-
sgsc -- Search the HST Guide Star Catalog given a region on the sky.
-
sgsc2 -- Search the GSC II Catalog given a region on the sky.
-
sgscind -- Search the guide star catalog index.
-
sharp -- Measure the sharpness of star images of WFPC1/2
-
shift -- Shift an image by a specified number of pixels.
-
shiftfind -- Finds X,Y shifts in a cross-corelation image.
-
shiftlines -- Shift the lines of a list of N-D images
-
show -- Show an environment variable
-
show_models -- Display the current model parameters.
-
showcap -- Show and decode graphcap entries
-
showfiles -- Print a list of filenames used in a synphot expression.
-
showspiral -- Build and display spiral-search map.
-
shutcor -- Shutter correction from images of varying exposure times
-
siaper -- Plot the science instrument apertures of HST.
-
side1_offset -- Task to convert side 1 carrousel positions to side 2 positions.
-
simbackgd -- Two-dimensional HST background simulator
-
simimg -- Two-dimensional HST imaging instrument simulator
-
simnoise -- Two-dimensional HST noise simulator
-
simprism -- Create a 1-D or 2-D simulated objective prism spectrum.
-
simspec -- Two-dimensional HST spectral instrument simulator
-
singlefit -- Compare fixed-parameter model with data.
-
sinterp -- Interpolate a table of x,y pairs to create a spectrum
-
sky -- Sky processing by "crrej-like" algorithm.\
-
sky2xy -- Print image pixel coordinates for image with WCS at sky coordinates
-
skycoor -- Convert between coordinate systems
-
skyctran -- Transform coordinates from one celestial wcs to another
-
skygroup -- Group a list containing RA and Dec into spatial sublists
-
skymap -- Compute geometric transforms using the image celestial wcs
-
skypix -- precess and convert between astronimical coordinate systems
-
skysep -- Compute arc separation of two RA/Dec values
-
skysub -- Sky subtract extracted multispec spectra
-
skytweak -- Sky subtract 1D spectra after tweaking sky spectra
-
skyxymatch -- Generate matched pixel lists using the image celestial wcs
-
sleep -- Hibernate for a specified time
-
slist -- List spectrum header parameters
-
slist1d -- List spectral header elements
-
slitanglex -- Measure the angle of long slit spectrum to AXIS1.
-
slitless -- Extract a spectrum from a direct/GRISM image pair
-
slitpic -- Generate IRAF image of aperture slit mask
-
smap -- Compute the photocathode mapping function (i.e., the sample direction).
-
smaperloc -- Calibrate location of a small aperture (location phase III).
-
snrmap -- determine the signal-to-noise of a given image
-
sort -- Sort a text file
-
spearman -- Compute the generalized Spearman's rho correlation.
-
specalign -- Combine spectra such as FP-SPLIT Observations.
-
specfit -- Fitting spectra with non-linear chi-square minimization
-
specfocus -- Determine spectral focus and alignment variations
-
specplot -- Stack and plot multiple spectra
-
specshift -- Shift spectral dispersion coordinate systems
-
specwcs -- Discussion and description of the spectral image formats and the dispersion world coordinate system
-
spiralmap -- Build spiral-search map.
-
splice -- Splice spectra together.
-
split -- Split a large file into smaller segments
-
splot -- Preliminary spectral plot/analysis
-
sppm -- Search the PPM catalog given a region on the sky. *
-
sptime -- Spectroscopic exposure time calculator
-
spy -- Show processor status
-
src_cnts -- calculate number of counts due to sources in QPOE file
-
srcinten -- compute the count rate of a given source region
-
sregister -- Register 1-D or 2-D images using the image celestial wcs
-
stack -- Stack images to form a new image with one more dimension.
-
stamps -- Generate stamp images from a PET
-
standard -- Identify standard stars to be used in sensitivity calc
-
starfind -- Automatically detect stellar objects in a list of images
-
starfocus -- Determine direct focus variations from stellar images
-
starlist -- Make an artificial star list
-
statregions -- image statistics regions (pset).
-
stdgraph -- Plot metacode on the standard graphics device
-
stdplot -- Plot metacode on the standard plotter device
-
step -- Take an image and divide the data between different groups.
-
stfhistory -- Add history records to an STSDAS image header.
-
stfov -- Plot HST science instrument apertures over an image.
-
stgindx -- Copy the catalog index to an STSDAS table.
-
stisnoise -- Remove fixed pattern noise from STIS images.
-
stmc -- Search the 2MASS Point Source Catalog given a region on the sky.
-
streakflat -- Generate WF/PC flat field from streak exposures of the Earth.
-
strfits -- Convert FITS files to tables or to GEIS files
-
strings -- String manipulation routines
-
stty -- Set/show terminal characteristics
-
stwfits -- Convert tables and/or GEIS files to FITS files
-
sua2 -- Search the USNO A2.0 catalog given a region on the sky.
-
sub1 -- Search the USNO B1.0 catalog given a region on the sky.
-
subsection -- Create an artificial subsection CCD observation
-
subsets -- Description of CCD subsets
-
subsky -- Subtract background flux from target+background flux.
-
substar -- Subtract the fitted stars from the original image
-
sucac2 -- Search the USNO UCAC2 catalog given a region on the sky.
-
sums -- Generate sums of object and sky spectra by aperture
-
sumspec -- Combine multiple spectra into an assigned-velocity spectrum
-
sun2vax -- Convert GEIS images from Sun to Vax binary format
-
suntoiraf -- Convert Sun rasters into IRAF images
-
surface -- Make a surface plot of an image
-
surfit -- Fit a surface, z=f(x,y), to a set of x, y, z points
-
surveys -- Describe the image surveys configuation file
-
survival -- Provide background & overview of survival analysis.
-
susa2 -- Search the USNO SA2.0 catalog given a region on the sky.
-
syndico -- Make dicomed print of daily grams 18 cm across.
Help Form · STSDAS