astro
Class LightCurveSimulator

java.lang.Object
  util.PropertyContainer
      util.PropertyResources
          util.PropertyBundles
              astro.LightCurveSimulator

All Implemented Interfaces:

Cloneable, Initializable, LocalizedSupplying, PropertySupplying, ResourceSupplying

public class LightCurveSimulator
extends PropertyBundles

Very simple program to simulate light curves.

Nested Class Summary

static class

LightCurveSimulator.Series Parses the command line and prints out a simluated light curve.

Nested classes/interfaces inherited from class util.PropertyResources

PropertyResources.URLResource

Field Summary

private double	alpha Photon constant.
private double	beta Scintillation constant.
private static double	DEFALTITUDE Default value.
private static double	DEFDIAMETER Default diameter.
private static double	DEFEXPOSURETIME Default value.
private static double	DEFKPRIME Default kprime.
private static double	DEFLATITUDE Default value.
private static double	DEFLIGHTLOSS Default value.
private static double	DEFLONGITUDE Default value.
private static double	DEFMINHEIGHT Default value.
private static double	DEFREADOUT Default value.
private static boolean	DEFRECTANGLE Default use plain sine wave.
private static double	DEFSCINTILLATION Default value.
private static double	DEFSKYAPERTURE Default aperture diameter in arcsec.
private static double	DEFSKYBRIGHT Default sky brightness.
private static double	DEFSOLHEIGHT Default allowed maximum solar height.
private AltTarget	h The height of the target at the stated time.
private static double	H0 Validity elevation above sea level for scintillation formular.
static String	KEY_ALTITUDE The observatory height.
static String	KEY_AMPLITUDE The peak-to-valley amplitude of the light curve in mag.
static String	KEY_BRIGHTNESS The magnitude of the primary star, V.
static String	KEY_DETARGET The declination of the object.
static String	KEY_DIAMETER The telescope diameter for photon gathering.
static String	KEY_EXPOSURETIME The exposure time in seconds.
static String	KEY_KPRIME The airmass konstant.
static String	KEY_LATITUDE The latitude of the observatory.
static String	KEY_LIGHTLOSS The light-loss factor, ioncluding telescope and CCD.
static String	KEY_LONGITUDE The longitude of the observatory.
static String	KEY_MINHEIGHT The minimum height.
static String	KEY_PERIOD The period of the light-curve in days.
static String	KEY_RATARGET The right ascension of the object.
static String	KEY_READOUT The read-out/acquire delay.
static String	KEY_RECTANGLE If true, use a rectangluar wave instead of sine.
static String	KEY_SCINTILLATION The scintillation constant.
static String	KEY_SKYAPERTURE The aperture of measure.
static String	KEY_SKYBRIGHT The mag/arcsec^2 of photon sky noise.
static String	KEY_SOLHEIGHT Observing only, when sun is lower than that.
static String	KEY_SPAN The observing time span in days.
static String	KEY_START The starting time of the simulation.
private Distance	moondist Distance from object to moon on sky.
private MoonHeight	moonh The moon height.
private MoonAngle	moonphi Moon phase.
private static PoissonRandom	RANDOM The random generator.
private SolHeight	solh The solar height.
private SettableTime	t Our time variable.

Fields inherited from class util.PropertyBundles

KEY_LOCALECOUNTRY, KEY_LOCALELANGUAGE, KEY_RESOURCEBUNDLES

Fields inherited from class util.PropertyResources

KEY_NOINITONCREATE, localurl, locate, POSTFIX_DIR, POSTFIX_EXT, POSTFIX_FILE, POSTFIX_LIST, POSTFIX_URL, urlset

Fields inherited from class util.PropertyContainer

KEY_LISTSEPARATOR, KEY_MAPKEYVALUECHAR, KEY_MAPSEPARATOR

Fields inherited from interface util.ResourceSupplying

KEY_URLRESOURCES, KEY_URLUSECONFIG, KEY_URLUSECURRENT, KEY_URLUSEHOME

Fields inherited from interface util.PropertySupplying

CONFIG, KEY_CLASS

Constructor Summary

LightCurveSimulator(Map<String,String> prop)
Constructs a new light curve simulator, defaulting some values.

Method Summary

void	init() We create all necessary parameters out of our properties here.
int	printCurve(PrintWriter out) Simulates values of the light curve at regular intervals composed of exposure time plus readout time.
double	simulate(double m0) Simulates a light-curve value at a given point in time stored in the global time variable for a given outside-of-atmosphere V magnitude.

Methods inherited from class util.PropertyBundles

clone, getLocalized, getLocalized, getLocalizedString, getLocalizedString, loadResource

Methods inherited from class util.PropertyResources

createFrom, createFrom, createFrom, getApplet, getAsResources, getLocalClassLoader, getPropertiesToKey, getPropertiesToKey, getResource, getResourceAsStream, getResourceFromKey, getResources, keyCreate, keyCreate, reload, setApplet

Methods inherited from class util.PropertyContainer

augment, augment, augment, defaultBoolean, defaultChar, defaultDouble, defaultFloat, defaultInt, defaultLong, defaultObject, defaultObject, defaultProperties, defaultProperty, getAsBoolean, getAsChar, getAsDouble, getAsEnums, getAsFloat, getAsInt, getAsList, getAsLong, getAsMap, getAsMap, getAsObject, getAsObject, getProperties, getProperty, has, isNew, parseObject, reload, removeProperty, rescanned, setObject, setProperties, setProperty, stringProperties, toString

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface util.ResourceSupplying

getResource, getResourceAsStream, getResources

Methods inherited from interface util.PropertySupplying

defaultBoolean, defaultChar, defaultDouble, defaultFloat, defaultInt, defaultLong, defaultObject, defaultObject, defaultProperties, defaultProperty, getAsBoolean, getAsChar, getAsDouble, getAsFloat, getAsInt, getAsList, getAsLong, getAsMap, getAsObject, getAsObject, getProperties, getProperty, has, parseObject, removeProperty, setObject, setProperty, stringProperties

Field Detail

KEY_DIAMETER

public static final String KEY_DIAMETER

The telescope diameter for photon gathering.

See Also:

Constant Field Values

KEY_EXPOSURETIME

public static final String KEY_EXPOSURETIME

The exposure time in seconds.

See Also:

Constant Field Values

KEY_LIGHTLOSS

public static final String KEY_LIGHTLOSS

The light-loss factor, ioncluding telescope and CCD.

See Also:

Constant Field Values

KEY_LONGITUDE

public static final String KEY_LONGITUDE

The longitude of the observatory.

See Also:

Constant Field Values

KEY_LATITUDE

public static final String KEY_LATITUDE

The latitude of the observatory.

See Also:

Constant Field Values

KEY_ALTITUDE

public static final String KEY_ALTITUDE

The observatory height.

See Also:

Constant Field Values

KEY_RATARGET

public static final String KEY_RATARGET

The right ascension of the object.

See Also:

Constant Field Values

KEY_DETARGET

public static final String KEY_DETARGET

The declination of the object.

See Also:

Constant Field Values

KEY_BRIGHTNESS

public static final String KEY_BRIGHTNESS

The magnitude of the primary star, V.

See Also:

Constant Field Values

KEY_READOUT

public static final String KEY_READOUT

The read-out/acquire delay.

See Also:

Constant Field Values

KEY_MINHEIGHT

public static final String KEY_MINHEIGHT

The minimum height.

See Also:

Constant Field Values

KEY_KPRIME

public static final String KEY_KPRIME

The airmass konstant.

See Also:

Constant Field Values

KEY_SKYBRIGHT

public static final String KEY_SKYBRIGHT

The mag/arcsec^2 of photon sky noise.

See Also:

Constant Field Values

KEY_SKYAPERTURE

public static final String KEY_SKYAPERTURE

The aperture of measure.

See Also:

Constant Field Values

KEY_SCINTILLATION

public static final String KEY_SCINTILLATION

The scintillation constant.

See Also:

Constant Field Values

KEY_RECTANGLE

public static final String KEY_RECTANGLE

If true, use a rectangluar wave instead of sine.

See Also:

Constant Field Values

KEY_AMPLITUDE

public static final String KEY_AMPLITUDE

The peak-to-valley amplitude of the light curve in mag.

See Also:

Constant Field Values

KEY_PERIOD

public static final String KEY_PERIOD

The period of the light-curve in days.

See Also:

Constant Field Values

KEY_START

public static final String KEY_START

The starting time of the simulation.

See Also:

Constant Field Values

KEY_SPAN

public static final String KEY_SPAN

The observing time span in days.

See Also:

Constant Field Values

KEY_SOLHEIGHT

public static final String KEY_SOLHEIGHT

Observing only, when sun is lower than that.

See Also:

Constant Field Values

DEFDIAMETER

private static final double DEFDIAMETER

Default diameter.

See Also:

Constant Field Values

DEFEXPOSURETIME

private static final double DEFEXPOSURETIME

Default value.

See Also:

Constant Field Values

DEFLIGHTLOSS

private static final double DEFLIGHTLOSS

Default value.

See Also:

Constant Field Values

DEFLONGITUDE

private static final double DEFLONGITUDE

Default value.

DEFLATITUDE

private static final double DEFLATITUDE

Default value.

DEFALTITUDE

private static final double DEFALTITUDE

Default value.

DEFREADOUT

private static final double DEFREADOUT

Default value.

See Also:

Constant Field Values

DEFMINHEIGHT

private static final double DEFMINHEIGHT

Default value.

See Also:

Constant Field Values

DEFKPRIME

private static final double DEFKPRIME

Default kprime.

See Also:

Constant Field Values

DEFSKYBRIGHT

private static final double DEFSKYBRIGHT

Default sky brightness.

See Also:

Constant Field Values

DEFSKYAPERTURE

private static final double DEFSKYAPERTURE

Default aperture diameter in arcsec.

See Also:

Constant Field Values

DEFSCINTILLATION

private static final double DEFSCINTILLATION

Default value.

See Also:

Constant Field Values

DEFSOLHEIGHT

private static final double DEFSOLHEIGHT

Default allowed maximum solar height.

See Also:

Constant Field Values

DEFRECTANGLE

private static final boolean DEFRECTANGLE

Default use plain sine wave.

See Also:

Constant Field Values

H0

private static final double H0

Validity elevation above sea level for scintillation formular.

See Also:

Constant Field Values

RANDOM

private static final PoissonRandom RANDOM

The random generator.

t

private SettableTime t

Our time variable.

h

private AltTarget h

The height of the target at the stated time.

solh

private SolHeight solh

The solar height.

moonh

private MoonHeight moonh

The moon height.

moonphi

private MoonAngle moonphi

Moon phase.

moondist

private Distance moondist

Distance from object to moon on sky.

alpha

private double alpha

Photon constant.

beta

private double beta

Scintillation constant.

Constructor Detail

LightCurveSimulator

public LightCurveSimulator(Map<String,String> prop)

Constructs a new light curve simulator, defaulting some values.

Method Detail

init

public void init()

We create all necessary parameters out of our properties here.

Specified by:

init in interface Initializable

Overrides:

init in class PropertyResources

printCurve

public int printCurve(PrintWriter out)

Simulates values of the light curve at regular intervals composed of exposure time plus readout time. We print out JD vs. instrumental magnitude.

Returns:

Number of data points writtn.

simulate

public double simulate(double m0)

Simulates a light-curve value at a given point in time stored in the global time variable for a given outside-of-atmosphere V magnitude.