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+# Images with AVM metadata
+
+The [Astronomy Visualization Metadata (AVM)](https://noirlab.edu/public/media/archives/techdocs/pdf/techdoc114.pdf)
+standard provides a way of embedding astronomy-specific metadata, including e.g.
+World Coordinate System (WCS) information in RGB images such as JPEG and PNG files.
+
+- `sig07-009.jpg`: Multiwavelength (GALEX/Hubble/Spitzer) image of Messier 81,
+  with embedded AVM metadata including the spatial (WCS) information, used to
+  demonstrate reprojection of RGB images in the reproject package
+  documentation. This is a reduced-size version of
+  https://www.spitzer.caltech.edu/image/sig07-009-multiwavelength-m81 with the
+  spatial metadata rescaled to match the image dimensions. Credit: Hubble
+  data: NASA, ESA, and A. Zezas (Harvard-Smithsonian Center for Astrophysics);
+  GALEX data: NASA, JPL-Caltech, GALEX Team, J. Huchra et al.
+  (Harvard-Smithsonian Center for Astrophysics); Spitzer data:
+  NASA/JPL/Caltech/S. Willner (Harvard-Smithsonian Center for Astrophysics).
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