Working with FITS Format
FITS format, or the "Flexible Image Transport
System", is a file format standardized and maintained by NASA that
allows data to be transported between systems and interpreted
according to exact specifications. A FITS format file consists of a
data array (pixel data for an image) and a header containing
metadata describing the pixel data and providing other
documentation about the file. The FITS header and data follow a
rigid structure defined in the standard. It is critical to note
that FITS format is a file format, not an image format, as other
types of data may be encoded in a FITS file.
Beyond opening, saving, and displaying FITS format
images, Mira provides numerous tools for showing and modifying the
FITS header metadata. Note that Mira does not save all of the FITS
header metadata to TIFF and other graphics format files.
FITS Format definition
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Defines and describes the FITS format and Mira's
implementation.
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FITS Keywords
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Defines the standard FITS keywords and additional
keywords used by Mira.
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Editing the FITS Header
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Describes the general procedure for editing or
modifying the FITS header information.
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FITS Header Editor
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Displays the FITS header information and permits
the information to be edited. The header is opened in an
independent window, separate from the image window.
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FITS Header Pane
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Displays the FITS header information and permits
the information to be edited. The header is opened in a docking
pane owned by the image window.
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FITS Image Orientation
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Defines the coordinate orientation used by FITS
format images.
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List COMMENT Keywords
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Describes how comments are stored in the FITS image
header.
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List HISTORY Keywords
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Describes how the image processing history is
stored in the FITS image header.
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List Statistics Keywords
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Displays the keywords and values resulting from
Statistics Measurements.
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List WCS Keywords
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Displays the keywords used for describing a World
Coordinate System attached to the image.
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Modify Keywords
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Changes keyword values in the FITS image
header.
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Add Metadata
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Changes (adds, replaces, and renames) keyword
metadata when the image is opened or is saved to a FITS format
file. This command configures the metadata changes but the changes
are actually committed based on global settings in the
General Properties (Ctrl+R) dialog.
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Create Image Keyword List
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Creates a table of keyword values in a collection
of images.
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Search Keyword Values
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Creates a table of keyword values meeting numerical
criteria in a collection of images.
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View FITS File Header
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Shows the raw FITS file header in a
Text Editor without opening the file for display or
processing.
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MIRAPROC Keyword
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Encodes calibration information into the image
header. Mira uses this to prevent repeating the specific steps of
calibration.
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Related Topics
Contents
Mira Pro x64 User's Guide, Copyright Ⓒ 2023 Mirametrics, Inc. All
Rights Reserved.
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