.. _manual:

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User's Manual
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銀河

Ginga is a toolkit for building viewers for scientific data in Python,
particularly astronomical data.  It also includes a reference viewer for viewing `FITS (Flexible Image Transport System) <https://fits.gsfc.nasa.gov//>`_ files.

The Ginga viewer is based on an image display widget that supports:

- Zooming and panning
- Color and intensity mapping
- A choice of several automatic cut levels algorithms, and
- Canvases for plotting scalable geometric forms.

In addition to the image display widget, the Ginga viewer
provides a flexible plugin framework for extending the viewer with many different features.

A relatively complete set of standard plugins is provided for features that we expect from a modern viewer: panning and zooming windows, star catalog access, cuts, star pick/fwhm, and thumbnails.

.. toctree::
   :maxdepth: 3

   introduction
   concepts
   operation
   plugins
   customizing
