astroDynamics_test.cpp

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/** \file astroDynamics_test.cpp
 */
 
#include "../../catch2/catch.hpp"
 
#include "../../../include/astro/astroDynamics.hpp"
 
/** Scenario: calculating parallactic angles
 *
 * Compares par. ang. calc vs. an actual observation.
 *
 * \anchor tests_astrodynamics_parang
 */
SCENARIO( "calculating parallactic angles", "[astroDynamics::parang]" )
{
    GIVEN( "a typical target" )
    {
        // Using an actual obervation of beta Pic and FITS headers.
 
        double dec = -51.06575; // beta Pic.
        double lat = -29.015;   // LCO
        WHEN( "before transit" )
        {
            double ha = -0.739167 / 24. * 360.;
 
            double parang = mx::astro::parAngDeg( ha, dec, lat, true );
            double diff = fabs( parang - ( -24.903 ) ); // The result from the TCS.
 
            REQUIRE( parang < 0 );
            REQUIRE( diff <=
                     1e-1 ); // This is just a roughly close enough test -- don't have exact precision of TCS, etc.
        }
 
        WHEN( "after transit" )
        {
            double ha = 2.008889 / 24. * 360.;
 
            double parang = mx::astro::parAngDeg( ha, dec, lat, true );
            double diff = fabs( parang - ( 57.1241 ) ); // The result from the TCS.
 
            REQUIRE( parang > 0 );
            REQUIRE( diff <=
                     1e-1 ); // This is just a roughly close enough test -- don't have exact precision of TCS, etc.
        }
    }
}