A Task Index
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absfity -- Smooth an FOS sensitivity curve.
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absfitz -- Generate a smooth sensitivity curve.
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abssenv -- Calculate digital absolute sensitivity.
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absseny -- Compute an FOS sensitivity curve.
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abssenz -- Compute the absolute sensitivity ratio.
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abund -- Derive ionic abundances relative to H+ in 3-zone nebula
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acatpars -- Default astrometry file format parameter set
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access -- Test if a file exists
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aclist -- List the supported astrometric catalogs
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acoadd -- Image coaddition using Lucy Method with optional acceleration.
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adaptive -- Adaptive filter.
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addmasks -- Combine several masks or bad pixel lists.
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addnewkeys -- Add new CALFOS keywords to FOS headers.
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addsets -- Add subsets of strings of spectra
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addstar -- Add artificial stars to an image using the computed psf
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adumpcat -- Catalog access debugging task
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adumpim -- Image survey access debugging task
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af2pet -- Generate a PET from a grism image and an OAF
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afiles -- Describe the standard astrometry file format
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afiltcat -- Filter astrometry files derived from astrometric catalogs
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afiltpars -- Default astrometry file filtering parameters
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agetcat -- Extract astrometry files from astrometric catalogs
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agetim -- Extract FITS images from image surveys
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ahedit -- Initialize the image wcs and set standard keywords
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aidpars -- Automatic line identification parameters and algorithm
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aimfind -- Select images containing catalog objects
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aimpars -- Default image data parameters
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airmass -- Compute the airmass at a given elevation above the horizon
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allocate -- Allocate a device, i.e., magtape drive mta, mtb, ...
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allstar -- Group and fit psf to multiple stars simultaneously
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analoglin -- Verify the analog linearity of HSP detectors.
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apall -- Extract 1D spectra (all parameters in one task)
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apbackground -- Background subtraction algorithms
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apdefault -- Set the default aperture parameters
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apedit -- Edit apertures interactively
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apercen -- Find the aperture center (location phase I).
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aperlocy -- Analyze a target acquisition image.
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apershift -- Shift the wavelengths for an object not centered in the aperture.
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apfile -- Prepare an aperture corrections file from a text file
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apfind -- Automatically find spectra and define apertures
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apfit -- Fit 2D spectra and output the fit, difference, or ratio
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apflatten -- Remove overall spectral and profile shapes from flat fields
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apmask -- Create and IRAF pixel list mask of the apertures
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apnoise -- Compute and examine noise characteristics of spectra
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apnormalize -- Normalize 2D apertures by 1D functions
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apply_bary -- apply the barycenter time corrections to the time-sorted QPOE file
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approfiles -- Profile determination algorithms
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aprecenter -- Recenter apertures
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apresize -- Resize apertures
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apropos -- List all the tasks related with a given subject.
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apscale -- Scale aperture parameters.
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apscatter -- Fit and remove scattered light
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apsum -- Extract 1D spectra
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aptest -- Run basic tests on the apphot package tasks
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aptrace -- Trace positions of spectra
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apvariance -- Extractions, variance weighting, cleaning, and noise model
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aregpars -- Default region parameter set
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artobs -- Create an artificial CCD observation
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aslist -- List the supported image surveys
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asnexpand -- Expand ASN tables to include extra ASC columns.
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astcalc -- Astronomical calculator
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asthedit -- Astronomical header editor
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astradius -- Find images within a circle on the sky
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asttimes -- Compute UT, Julian day, epoch, and siderial time
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at_data -- Documentation on the atomic reference data
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autocorr -- Autocorrelate an image.
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autoidentify -- Automatically identify lines and fit dispersion
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average -- Compute the mean and standard deviation of a list
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avshift -- Averages the shifts measured on the 4 WFPC chips.
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awcspars -- Default image wcs parameters
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axispar -- Specify axis and scaling parameters (pset for 'sgraph')
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