stella.util
Class GuiderParametersAltAz

java.lang.Object
  util.PropertyContainer
      util.PropertyResources
          util.PropertyBundles
              stella.util.GuiderParametersAltAz

All Implemented Interfaces:

Cloneable, Initializable, LocalizedSupplying, PropertySupplying, ResourceSupplying

public class GuiderParametersAltAz
extends PropertyBundles

A class to optimize the parameter settings in the stella guider class. It is used with a list of input stars, given with their right ascension and declination and a set of x-y coordinates as derived from an actual guider image (use something like Sextractor to get CCD pixel coordinates). The set of stellar coordinates must match the set of x/y pixels in a sense that each star given in the position list is also found on the CCD. If we have at least two stars visible, this program optimizes for four parameters, the shift of the center of the CCD (xs, ys), the field rotation θ and the combined product of focal length and pixel scale on the CCD, f. If total reflection is in effect, you can include that by setting #KEY_MIRRORX or #KEY_MIRRORY to true.

Though θ and the focal length/pixel scale are in principle known, we optimize for these parameter, too.

Nested Class Summary

Nested classes/interfaces inherited from class util.PropertyResources

PropertyResources.URLResource

Field Summary

private static double	DEFFSCALE The default focallength.
private static double	DEFTHETA The default rotation angle.
private static boolean	DEFXMIRROR The default x mirror
private static double	DEFXSHIFT The default x shift
private static boolean	DEFYMIRROR The default x mirror
private static double	DEFYSHIFT The default y shift
private PrintMultidimensional	dist The multidimensional function that is to be minimized with amoeba.
static String	KEY_CCD The list of CCD pixels as x,y pairs in pixel.
static String	KEY_DATE If the date of the exposure is given, we calculate the field angle.
static String	KEY_DECENTER The center of the frame.
static String	KEY_FSCALE The key to the starting value of focallength times scale.
static String	KEY_RACENTER The center of the frame in degrees, right ascension.
static String	KEY_SITE If the name of the observatory is given, we do not default to Izana.
static String	KEY_STARS The list of stars as ra,de pairs given in degrees.
static String	KEY_THETA The key to the starting value of field angle
static String	KEY_XMIRROR The key to the mirroring along x-axis.
static String	KEY_XSHIFT The key to the starting value of CCD shift, x
static String	KEY_YMIRROR The key to the mirroring along x-axis.
static String	KEY_YSHIFT The key to the starting value of CCD shift, y
private List	pixel The list of Point2D from the ccd, KEY_CCD.
private List	stars The list of StarDescription from KEY_STARS.

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

GuiderParametersAltAz(Map prop)
Constructs a new guider parameter object and reads in the star and ccd coordinates.

Method Summary

static void

main(String[] arg) Reads the properties from the command line, construct a new guider parameters object and use an Amoeba to optimize the focal length times pixel scale, the field rotation and the x/y shift.

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, init, 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

Methods inherited from interface util.Initializable

init

Field Detail

KEY_FSCALE

public static final String KEY_FSCALE

The key to the starting value of focallength times scale.

See Also:

Constant Field Values

KEY_THETA

public static final String KEY_THETA

The key to the starting value of field angle

See Also:

Constant Field Values

KEY_XSHIFT

public static final String KEY_XSHIFT

The key to the starting value of CCD shift, x

See Also:

Constant Field Values

KEY_YSHIFT

public static final String KEY_YSHIFT

The key to the starting value of CCD shift, y

See Also:

Constant Field Values

KEY_XMIRROR

public static final String KEY_XMIRROR

The key to the mirroring along x-axis.

See Also:

Constant Field Values

KEY_YMIRROR

public static final String KEY_YMIRROR

The key to the mirroring along x-axis.

See Also:

Constant Field Values

KEY_RACENTER

public static final String KEY_RACENTER

The center of the frame in degrees, right ascension.

See Also:

Constant Field Values

KEY_DECENTER

public static final String KEY_DECENTER

The center of the frame. i.e. the pointing of the telescope at expose.

See Also:

Constant Field Values

KEY_STARS

public static final String KEY_STARS

The list of stars as ra,de pairs given in degrees.

See Also:

Constant Field Values

KEY_CCD

public static final String KEY_CCD

The list of CCD pixels as x,y pairs in pixel.

See Also:

Constant Field Values

KEY_DATE

public static final String KEY_DATE

If the date of the exposure is given, we calculate the field angle.

See Also:

Constant Field Values

KEY_SITE

public static final String KEY_SITE

If the name of the observatory is given, we do not default to Izana.

See Also:

Constant Field Values

DEFFSCALE

private static final double DEFFSCALE

The default focallength.

See Also:

Constant Field Values

DEFTHETA

private static final double DEFTHETA

The default rotation angle.

See Also:

Constant Field Values

DEFXSHIFT

private static final double DEFXSHIFT

The default x shift

See Also:

Constant Field Values

DEFYSHIFT

private static final double DEFYSHIFT

The default y shift

See Also:

Constant Field Values

DEFXMIRROR

private static final boolean DEFXMIRROR

The default x mirror

See Also:

Constant Field Values

DEFYMIRROR

private static final boolean DEFYMIRROR

The default x mirror

See Also:

Constant Field Values

stars

private List stars

The list of StarDescription from KEY_STARS.

pixel

private List pixel

The list of Point2D from the ccd, KEY_CCD.

dist

private PrintMultidimensional dist

The multidimensional function that is to be minimized with amoeba.

Constructor Detail

GuiderParametersAltAz

public GuiderParametersAltAz(Map prop)

Constructs a new guider parameter object and reads in the star and ccd coordinates. Issues warnings if their numbers do not match or if we have too few stars.

Method Detail

main

public static void main(String[] arg)

Reads the properties from the command line, construct a new guider parameters object and use an Amoeba to optimize the focal length times pixel scale, the field rotation and the x/y shift.