New features in 4.0

• Opens and saves compressed FITS.
• Editing of several annotations at once.
• Single and multiple document mode.
• Navigator in full screen mode.
• Quick renaming of images.
• More binning modes.
• Equatorial grid.
• Equatorial coordinates.
• More visualization curves.
• More options for saving orientation marks.
• Link with Simbad and Aladin web sites.
• Side panel for analysis windows.
• User defined mouse wheel operation.
• More zoom modes and keyboard shortcuts.
• Improved support of high DPI.