tcsMOON

NAME

SYNOPSIS

   #include "tcsMOON.h"

   class tcsMOON : public eccsERROR_CLASS
   {
     public:
       tcsMOON(const dbSYMADDRESS  dbPoint,
               const vltDOUBLE     longitude,
               const vltDOUBLE     latitude,
               const vltDOUBLE     height);
      ~tcsMOON();

       ccsCOMPL_STAT   GetMoonPosition();
       ccsCOMPL_STAT   GetMoonPosition(ccsTIMEVAL atTime);

     protected:

     private:
       ccsCOMPL_STAT   CalculateMoonPosition(ccsTIMEVAL atTime);

   }

DESCRIPTION

This class calculates the moon position and phase and stores
the result in the database. Calculations are approximate.

PUBLIC METHODS

tcsMOON(const dbSYMADDRESS  dbPoint,
        const vltDOUBLE     longitude,
        const vltDOUBLE     latitude,
        const vltDOUBLE     height);

  The constructur receives as parameter the symbolic address of
  online database support point for the object, i.e. the point where
  results shall be written. It also receives the longitude and latitude,
  expressed in radians, and height in meters of the telescope position.

~tcsMOON();

  Deletes all the internal structures created dynamically.

ccsCOMPL_STAT GetMoonPosition();
ccsCOMPL_STAT GetMoonPosition(ccsTIMEVAL atTime);

  Calls the private CalculateMoonPosition method.
  If no parameter is supplied the current time is used.

PRIVATE METHODS

ccsCOMPL_STAT   CalculateMoonPosition(ccsTIMEVAL atTime);

  Calculates the moon position and phase using the following algorithm:
  The time supplied as parameter, atTime, is used as input to slaMoon.
  The result from slaMoon is three position vectors describing
  moon centre relative to earth centre, mean equator and equinox of date.
  Local sidereal time and local site velocity is obtained.
  slaLib converts this to right accension and declination.
  Final hour angle and altitude, azimuth are calculated.
  In addition the moon phase is calculated using the algorith on page 319
  in Astronomical Algorithms by J Meeus, 1991.
  The final results of altitude, azimuth (in degrees), RA and DEC
  (in HH/DDMMSS) and moon phase (new moon, 1st quarter, full moon,
  large quarter) are stored in the database.

Index

NAME

SYNOPSIS

DESCRIPTION

PUBLIC METHODS

PRIVATE METHODS