Allsky

Allsky is a program designed to show the - coverage obtained using a particular array of ground VLBI stations on a particular date, as a function of source position on the sky. This is essentially equivalent to running uvplot a number of times, for a series of source positions making up a regular grid on the sky. The intial screen presented to the user includes a number of input parameters and information for the user. Input parameters include the orbital parameters as well as the start and stop times, the date, and the observing frequency. Allsky takes into account the various restrictions and constraints which determine when the satellite can observe a certain position in the sky. Although the program is general in the way it performs its calculations, the initial parameters in the input files that specify the on-board pointing restrictions have been set for the Radioastron satellite.

• On-screen Parameters
  • Orbital Parameters
  • Other Parameters
• Other Items on the Display Screen
• Visible Options
  • stations
  • solve and quit
• Hidden Options
  • Polarization toggle `i'
  • Maximum - range option `m'
  • Colour UV toggle `c'
  • Spacecraft choice options `r', `v', `b'
  • Setup Screen `F1'
  • Postscript output option `F10'
• Input Files
  • The Vlbi Stations File
  • The Telemetry Stations File
  • The Uvplot Parameters File
  • The Restrictions File
  • The Satellite Parameters Files
• Output Files
  • Postscript Output