Basic information about the images or other FITS data, pixel statisitics.
Conversion of FITS images to more easily presentable formats.
Querying and modification of FITS header keywords.
Calibration of raw images, including the masking of bad, saturated or otherwise unuseable pixels.
Arithmetic operations on images, both on per-image and per-pixel basis.
Combination of multiple images into a single one.
Generic spatial geometric transformations of images (shifting, dilating, shrinking, clipping, higher order polynomial transformations, ...), including the registration of images to the same reference frame.
Generation of artificial images.
Detection and characterization of stellar profiles.
Coordinate list manipulation (fit and evaluation of geometric transformations, point matching, pair matching, matching by identifiers, ...)
Photometry (aperture, image subtraction, analytic profile modelling, PSF and various other sophisticated combinations of these).
Regression analysis and general numeric data manipulation.
Tasks are optimized for shell-level parallel processing.
Fitting optimal convolution transformation between a reference image and an input image.
Application of existing convolution transformation on a reference image.
Performing image subtraction using a reference image and an input image either by knowing the convolution transformation in advance or by fitting the optimal one during the process.
Management of so-called kernel files describing these convolution transformations.
Reporting a brief or a detailed summary about a FITS file, including primary image and various extensions (such as additional images, binary tables or textual tables).
Extracting raw information from FITS files, including dumping of image pixel data, mask bits, binary table data and textual table data.
Conversion of FITS images to PNM (PPM, PGM) format using
various scaling functions, such as linear, logarithmic, squared, square root, etc.,
scale limit determinations, such as minimum, maximum values, zscale, histrogram normalization, values derived from cumulative pixel intensity distributions, etc., and
various color palettes, including grey-scale, color, custom defined color as well as 8-bit and 16-bit dynamics.
Extracting simple pixel statistics from FITS image files.