Contents

• Description
  • IRAM context
  • FITS formalism
  • Compatibility between FITS and GILDAS
  
  
• GILDAS implementation
  • Gnomonic projection
  • Orthographic projection
  • Azimuthal projection
  • North Celestial Pole projection
  • Stereographic projection
  • Aitoff projection
  • Radio projection
  • SFL projection
  
  
• New SFL implementation in GILDAS
  • From projection plane to celestial coordinates
  • From celestial to projection plane coordinates
  • Special case of SFL with reference on the Equator
  
  
• Consistency checks
  • Support for TAN / gnomonic projection
  • Support for GLS / radio projection
  • Support for SFL (properly shifted) projection
  • Support for SFL (no shift) projection