edu.pdx.starview.calc
Class SVGeometry

java.lang.Object
  edu.pdx.starview.calc.SVGeometry

public class SVGeometry

extends java.lang.Object

Contains methods for working with and manipulating geomotry.

Author:

Dave Camarillo

Constructor Summary

SVGeometry()

Method Summary

static SVAzAlt	EquatorialToHorizontal(SVAngle LST, SVAngle lat, SVAngle inRA, SVAngle inDec) Determine the (Altitude, Azimuth) coordinates of the SkyPoint from its (RA, Dec) coordinates, given the local sidereal time and the observer's latitude.
static SVRADec	HorizontalToEquatorial(SVAngle LST, SVAngle lat, SVAngle az, SVAngle alt) Convert Horizontal coordinates (Azimuth, Altitude) to Equatorial coordinates (RA, Dec), given the local sidereal time and the observer's latitude.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SVGeometry

public SVGeometry()

Method Detail

EquatorialToHorizontal

public static SVAzAlt EquatorialToHorizontal(SVAngle LST,
                                             SVAngle lat,
                                             SVAngle inRA,
                                             SVAngle inDec)

Determine the (Altitude, Azimuth) coordinates of the SkyPoint from its (RA, Dec) coordinates, given the local sidereal time and the observer's latitude.

Parameters:

LST - to the local sidereal time

HorizontalToEquatorial

public static SVRADec HorizontalToEquatorial(SVAngle LST,
                                             SVAngle lat,
                                             SVAngle az,
                                             SVAngle alt)

Convert Horizontal coordinates (Azimuth, Altitude) to Equatorial coordinates (RA, Dec), given the local sidereal time and the observer's latitude.

Parameters:

LST - to the local sidereal time

az - azimuth to be converted

alt - altitude to be converted

Returns:

RA and Dec as a SVRADec