page_title: Shadows (software)
section_title: Features of the three levels of Shadows
hierarchical_section_title: Shadows (software) / Description / Features of the three levels of Shadows
caption_attribution_description: English: Horizontal analemmatic sundial design for the Bologna (Italy) latitude (44°29' N), drawn by the Shadows Expert shareware Français&#160;: Cadran solaire analemmatique horizontal conçu pour la latitude de Bologne (Italie) (44°29' N), tracé par le logiciel Shadows Expert
context_page_description: Shadows is a software package for the calculation and drawing of sundials and astrolabes, available as a freeware in its base level.
  It has been developed by François Blateyron, software developer and amateur astronomer, who made it available on Internet since 1997 and continues to improve it. It is used worldwide by thousands of sundial enthusiasts. It is compatible with Windows 10, 8.x and 7. Shadows is available in three levels: Shadows is a freeware; Shadows Expert and Shadows Pro are low cost shareware and provide advanced or professional functions. Since version 3.0, it supports the creation of astrolabes.
  In 2005, the French astronomical society, Société Astronomique de France awarded Blateyron with the Julien Saget prize for the Shadows software.
context_section_description: Shadows is supplied in three versions.
  Shadows: Freeware version
  Plane sundials with polar style (horizontal, vertical declining, equatorial, polar, meridian dial)
  Drawing of the sundial to scale 1; Any dimension, orientation or reclination
  Suitable for any location on Earth, on northern or southern hemisphere (2800 locations pre-installed)
  Drawing of the style to scale 1, ready to be cut out
  Tables of coordinates of hour lines and declination lines
  Drawing of declination arcs and hour lines (solar or mean time), with or without longitude correction
  Moveable, resizable text frames, with list of pre-installed mottoes
  Drawing of the curve of equation of time, in various shapes
  Drawing of compass and azimuth circle
  Full on-line help, user interface translated into 13 languages.
  Shadows Expert: Intermediate version, shareware
  (in addition to standard Shadows features)
  declining-reclining plane sundials
  Analemmatic sundials
  Cylindrical sundials (shepherd's dial, armillary sphere, ...)
  Tables of solar and astronomical ephemeris
  Drawing of Italian and Babylonian hours
  Insertion of images for decoration
  Export of data and images
  Drawing of the construction layout (epure)
  Simulation of the shadow cast by a roof
  Animation in orientation and reclination of the sundial
  Tool for the calculation of the wall orientation
  Direction rose
  Shadows Pro: Full version, shareware
  (in addition to Shadows Expert features)
  planispheric and universal astrolabes
  vertical declining analemmatic sundial
  Bifilar sundials
  Drawings in azimuth and altitude
  Sidereal hours, unequal hours
  Solar graph with horizon mask
  Export of drawings in WMF and DXF (AutoCAD)
  Export of animations in AVI
  Tool for the calculation of sundial parameters from a photograph
  Efficiency graph of a solar panel
caption: Analemmatic sundial drawn by Shadows Expert.
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