void forward(const Vec3f& altAzPos, float* mag) const
{
Q_ASSERT(std::fabs(altAzPos.length()-1.f)<0.001f);
*mag += airmass(altAzPos[2], false) * ext_coeff;
}
void backward(const Vec3f& altAzPos, float* mag) const
{
*mag -= airmass(altAzPos[2], false) * ext_coeff;
}
void oppositionPlot(void) {
int i;
double rasun, decsun, distsun, toporasun, topodecsun, x, y, z;
double jd, lstm, trueam, alt, ha, phi, longEcliptic, latEcliptic;
double objra, objdec;
openPlot("opposition");
cpgpap(PLOTSIZE/0.5,0.5);
cpgbbuf();
cpgsubp(2,2);
cpgpanl(1,1);
cpgswin(PHIMIN, PHIMAX, AMMIN, AMMAX);
cpgbox("BCNTS",0.0,0,"BVCNTS",0.0,0);
cpgmtxt("L",2.0,0.5,0.5,"airmass");
cpgmtxt("B",2.0,0.5,0.5,"angle from Sun");
cpgsci(2);
for(i=0; i<numobs; i++) {
jd = obs[i].date + 2400000.5;
lstm = lst(jd,longitude_hrs);
// get ecliptic coordinates
slaEqecl(obs[i].ra, obs[i].dec, obs[i].date, &longEcliptic, &latEcliptic);
if(fabs(latEcliptic) < 10.0/DEG_IN_RADIAN && obs[i].twilight==0) {
// get position of Sun
accusun(jd, lstm, latitude_deg, &rasun, &decsun, &distsun,
&toporasun, &topodecsun, &x, &y, &z);
// sun-object angle in degrees
// takes ra in hours, dec in degrees
objra = adj_time(obs[i].ra*HRS_IN_RADIAN);
objdec = obs[i].dec*DEG_IN_RADIAN;
phi = mysubtend(rasun, decsun, objra, objdec)*DEG_IN_RADIAN;
// angle from opposition is 180-phi
// FIXRANGE(phi,-180.0,180.0);
//airmass takes ra, dec, in radians, returns true airmass
airmass(obs[i].date, obs[i].ra, obs[i].dec, &trueam, &alt, &ha);
cpgpt1(phi, trueam, -1);
}
}
cpgsci(1);
cpgptxt(0.0,3.0,0.0,0.5,"|ecliptic latitude|<10");
cpgptxt(0.0,2.5,0.0,0.5,"night");
cpgsci(3);
cpgmove(-90.0,0.0);
cpgdraw(-90.0,4.0);
cpgmove( 90.0,0.0);
cpgdraw( 90.0,4.0);
cpgsci(1);
cpgpanl(1,2);
cpgswin(PHIMIN, PHIMAX, AMMIN, AMMAX);
cpgbox("BCNTS",0.0,0,"BVCNTS",0.0,0);
cpgmtxt("L",2.0,0.5,0.5,"airmass");
cpgmtxt("B",2.0,0.5,0.5,"angle from Sun");
cpgsci(2);
for(i=0; i<numobs; i++) {
jd = obs[i].date + 2400000.5;
lstm = lst(jd,longitude_hrs);
// get ecliptic coordinates
slaEqecl(obs[i].ra, obs[i].dec, obs[i].date, &longEcliptic, &latEcliptic);
if(fabs(latEcliptic) >= 10.0/DEG_IN_RADIAN && obs[i].twilight==0 ) {
// get position of Sun
accusun(jd, lstm, latitude_deg, &rasun, &decsun, &distsun,
&toporasun, &topodecsun, &x, &y, &z);
// sun-object angle in degrees
phi = mysubtend(rasun, decsun, obs[i].ra*HRS_IN_RADIAN, obs[i].dec*DEG_IN_RADIAN)*DEG_IN_RADIAN;
// angle from opposition is 180-phi
FIXRANGE(phi,-180.0,180.0);
airmass(obs[i].date, obs[i].ra, obs[i].dec, &trueam, &alt, &ha);
cpgpt1(phi, trueam, -1);
}
}
cpgsci(1);
cpgptxt(0.0,3.0,0.0,0.5,"|ecliptic latitude|>10");
cpgptxt(0.0,2.5,0.0,0.5,"night");
cpgsci(3);
cpgmove(-90.0,0.0);
cpgdraw(-90.0,4.0);
cpgmove( 90.0,0.0);
cpgdraw( 90.0,4.0);
cpgsci(1);
cpgpanl(2,1);
cpgswin(PHIMIN, PHIMAX, AMMIN, AMMAX);
cpgbox("BCNTS",0.0,0,"BVCNTS",0.0,0);
cpgmtxt("L",2.0,0.5,0.5,"airmass");
cpgmtxt("B",2.0,0.5,0.5,"angle from Sun");
cpgsci(2);
for(i=0; i<numobs; i++) {
jd = obs[i].date + 2400000.5;
lstm = lst(jd,longitude_hrs);
// get ecliptic coordinates
slaEqecl(obs[i].ra, obs[i].dec, obs[i].date, &longEcliptic, &latEcliptic);
if(fabs(latEcliptic) < 10.0/DEG_IN_RADIAN && obs[i].twilight==1) {
// get position of Sun
accusun(jd, lstm, latitude_deg, &rasun, &decsun, &distsun,
&toporasun, &topodecsun, &x, &y, &z);
// sun-object angle in degrees
// takes ra in hours, dec in degrees
objra = adj_time(obs[i].ra*HRS_IN_RADIAN);
objdec = obs[i].dec*DEG_IN_RADIAN;
phi = mysubtend(rasun, decsun, objra, objdec)*DEG_IN_RADIAN;
// angle from opposition is 180-phi
// FIXRANGE(phi,-180.0,180.0);
//airmass takes ra, dec, in radians, returns true airmass
airmass(obs[i].date, obs[i].ra, obs[i].dec, &trueam, &alt, &ha);
cpgpt1(phi, trueam, -1);
}
}
cpgsci(1);
cpgptxt(0.0,3.0,0.0,0.5,"|ecliptic latitude|<10");
cpgptxt(0.0,2.5,0.0,0.5,"twilight");
cpgsci(3);
cpgmove(-90.0,0.0);
cpgdraw(-90.0,4.0);
cpgmove( 90.0,0.0);
cpgdraw( 90.0,4.0);
cpgsci(1);
cpgpanl(2,2);
cpgswin(PHIMIN, PHIMAX, AMMIN, AMMAX);
cpgbox("BCNTS",0.0,0,"BVCNTS",0.0,0);
cpgmtxt("L",2.0,0.5,0.5,"airmass");
cpgmtxt("B",2.0,0.5,0.5,"angle from Sun");
cpgsci(2);
for(i=0; i<numobs; i++) {
jd = obs[i].date + 2400000.5;
lstm = lst(jd,longitude_hrs);
// get ecliptic coordinates
slaEqecl(obs[i].ra, obs[i].dec, obs[i].date, &longEcliptic, &latEcliptic);
if(fabs(latEcliptic) >= 10.0/DEG_IN_RADIAN && obs[i].twilight==1) {
// get position of Sun
accusun(jd, lstm, latitude_deg, &rasun, &decsun, &distsun,
&toporasun, &topodecsun, &x, &y, &z);
// sun-object angle in degrees
phi = mysubtend(rasun, decsun, obs[i].ra*HRS_IN_RADIAN, obs[i].dec*DEG_IN_RADIAN)*DEG_IN_RADIAN;
// angle from opposition is 180-phi
FIXRANGE(phi,-180.0,180.0);
airmass(obs[i].date, obs[i].ra, obs[i].dec, &trueam, &alt, &ha);
cpgpt1(phi, trueam, -1);
}
}
cpgsci(1);
cpgptxt(0.0,3.0,0.0,0.5,"|ecliptic latitude|>10");
cpgptxt(0.0,2.5,0.0,0.5,"twilight");
cpgsci(3);
cpgmove(-90.0,0.0);
cpgdraw(-90.0,4.0);
cpgmove( 90.0,0.0);
cpgdraw( 90.0,4.0);
cpgsci(1);
cpgebuf();
closePlot();
}
