Of procedures for reading, writing, and modifying FITS files. The IDL Astronomy Library contains four different sets The HDUs following the first (or primary) HDU areĪlso known as extensions, and thus a FITS file containing tabular data Vector data can be present in any HDU, but tabular data cannot appear Header describes the content of the associated data unit, which mightīe a spectrum (IDL vector), an image (IDL array), or tabular data inĪSCII or binary format (often read as an IDL structure). Images that in IDL is usually read into a string array variable. Information on calling CFITSIO from other languages such as C++ and Python.Ĭontains documentation for working with FITS files in Python.īriefly, a FITS file consists of a sequence of one or ![]() ![]() Home Page at Goddard Space Flight Center. Information on processing FITS files with C, rather than Detailed information on the FITSįITS Support Office at Goddard Space Flight Center. Interchange format for digital images, FITS files are now often used asĪ working data format, and can be used to store ASCII or binary tabular Although originally conceived as simply a FITS (Flexible Image Transport System) is a standardized data format
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