Introduction

FLUXES calculates approximate topocentric positions of the planets and also integrated flux densities of five of them at a number of wavelengths for the JCMT telescope on Mauna Kea, Hawaii. These provide calibration information at the effective frequencies and beam-sizes employed by the UKT14, SCUBA and SCUBA-2 receivers on this telescope.

The filter centre and widths are shown for each wavelength used. The filter frequencies are the effective frequencies for 1mm of water vapour.

The calculated planet positions should normally be accurate to better than 1 arcminute. The value for the Moon is less accurate than this, and for critical applications requiring sub arc-second accuracy you should use a different method.

The planet positions are estimated using the SLALIB library. See SUN/67 for more details on the SLA_PLANET library function.

The FLUXNOW command, runs the program for the current time and date. This gives you current planetary positions and flux levels for all the planets.