OffAxisTracker

java.lang.Object
- util.PropertyContainer
- - util.PropertyResources
  - - stella.adapter.AdapterUnit
    - - stella.adapter.GuidingUnit
      - stella.adapter.OffAxisTracker

All Implemented Interfaces:

Cloneable, Initializable, PropertySupplying, ResourceSupplying
```
public class OffAxisTracker
extends GuidingUnit
```
The guider unit task and the timer loop. The adapter master may prepare the guiding by a call to the do unit task, afterwards the guider loop might be retrieved with createGuiderLoop(long).

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

private class OffAxisTracker.GuiderLoop
The timer task that does the actual guiding.
- Nested classes/interfaces inherited from class util.PropertyResources
  PropertyResources.Load, PropertyResources.URLResource

Nested Classes
Modifier and Type	Class and Description
`private class`	`OffAxisTracker.GuiderLoop` The timer task that does the actual guiding.

Field Summary

Fields
Modifier and Type	Field and Description
`private Rectangle2D`	`catalog` Extra space on guiding, normally zero.
`private static String`	`CONTINUOUSSEEING` Properties of the internal seeing monitor.
`private ShelfStatistic`	`contseeing` The value with continuous seeing.
`private int`	`currentguider` Counting the guider frames.
`private int`	`datamax` Datamax on guiding, from guider mode.
`private int`	`datamin` Datamin on guiding, from guider mode.
`private static double`	`DEFABORTLEFT` The default minimum time left for reacquire requests, ms.
`static int`	`DEFAPERTURE` An integer value of the aperture size.
`private static Dimension`	`DEFENLARGEGUIDE` The default pixel enlargement during guide.
`static String`	`DEFEXPOSURETIMELEFT` The default name of the parameter holding the exposure time left .
`private static double`	`DEFFRACTION` The default maximum fraction for reacquire/mode switch requests.
`static String`	`DEFFRACTIONALEXPOSE` The default name of the parameter holding the fractional exposure time.
`private static boolean`	`DEFKEEPGUIDEFITS` If true, all guiding fits are kept on disc.
`private static int`	`DEFKEEPGUIDEWHAT` An integer specifying which guider fits to keep.
`static String`	`DEFLIGHTGAIN` The default name of the parameter accumulating light losses.
`static String`	`DEFLIGHTLOSS` The default name of the parameter accumulating light losses.
`static String`	`DEFLOSTCOUNT` The default name of the parameter counting guiding losses
`private static double`	`DEFMAGERROR` An estimate of the mgnitude error.
`private static double`	`DEFMAXDEVBACK` Which quadrant in the background box to use.
`private static double`	`DEFMINSIGNAL` Signal, if 3 sigma above background.
`private static int`	`DEFMODECHANGE` The default number of minimum guider losts for mode change.
`private static double`	`DEFMODEFREQUENCY` The default minimum occurence frequency of guider losts.
`private static double`	`DEFMODESEEING` The default maximum seeing for good seeing guiding.
`private static double`	`DEFMODESWITCHLEFT` The default minimum time left for mode switch requests, ms.
`private static double`	`DEFMODEWIND` The default maximum wind speed for non-wind guiding.
`static String`	`DEFOFFSETAVERAGE` The default name of the parameter counting arcsec offsets.
`private static int`	`DEFPINHOLEBACK` Background around pinhole box.
`private static int`	`DEFPINHOLEBOX` Box around pinhole, half-size unbinned.
`private static double`	`DEFPOSITIONERROR` An estimate of the catalog errors in pixels on ccd.
`private static double`	`DEFREACQUIRELEFT` The default minimum time left for reacquire requests, ms.
`private static long`	`DEFROWTIMING` Read out time for a single row, acquire frame.
`static String`	`DEFSEEING` The default name of the parameter accumulating guiding seeing.
`static String`	`DEFSPURIOUSCOUNT` The default name of the parameter counting guidng losses
`private static double`	`DEFSPURIOUSSIGNAL` ADU sum of valid points must not be lower than this.
`private static int`	`DEFVALIDPOINTS` For the offset recovered, at least this number of points with signal.
`private static boolean`	`DEFWAITONGUIDE` If true, we wait for offset completion on guide.
`static String`	`DEFWINDMAX` The default name of the parameter holding windspeed max.
`private Value`	`exposuretimeleft` The Value holding the exposure time left.
`private Value`	`fractionalexpose` The value holding the fractional exposure time.
`private Star`	`guide`
`private long`	`guideexpose` The exposure time for the guider applied on the CCD.
`private long`	`guiderawexpose` The exposure time for the guider without increase.
`private int`	`guidinglost` The counter of repetitive guiding failures.
`private String`	`guidingmode` The identifier of the guider mode, set by the master before unit task.
`private Value`	`highwind` The value with wind peaks.
`private double`	`increase` A value set from the outside signaling increased exposure time.
`static String`	`KEY_ABORTLEFT` To request an abort, at least this exposure time must remain.
`static String`	`KEY_APERTURE` On aperture photometry the radius of the square box, unbinned.
`static String`	`KEY_ENLARGEGUIDE` A gray-zone around the guide field for catalog star inclusion.
`static String`	`KEY_EXPOSURETIMELEFT` The parameter holding the exposure time left.
`static String`	`KEY_FRACTION` No reposition or change mode after this fraction of exposure time.
`static String`	`KEY_FRACTIONALEXPOSE` The parameter holding the fractional exposure time.
`static String`	`KEY_KEEPGUIDEFITS` If true, all guiding fits are kept on disc.
`static String`	`KEY_KEEPGUIDEWHAT` An integer specifying which guider fits to keep.
`static String`	`KEY_LIGHTGAIN` Issued to the local parameter cluster as the light loss estimate.
`static String`	`KEY_LIGHTLOSS` Issued to the local parameter cluster as the light loss estimate.
`static String`	`KEY_LOSTCOUNT` Issued to the local parameter cluster as number of target losts.
`static String`	`KEY_MAGERROR` An estimate of the magnitude errors.
`static String`	`KEY_MAXDEVBACK` Which quadrant in the background box to use.
`static String`	`KEY_MINSIGNAL` Signal, if 3 sigma above background.
`static String`	`KEY_MODECHANGE` Minimum lost guidings to allow mode change.
`static String`	`KEY_MODEFREQUENCY` Minimum frequency of guiding losts to allow mode change.
`static String`	`KEY_MODEPROPERTIES` Modes are defined as MODE_XXX+this key, e.g.
`static String`	`KEY_MODESEEING` Minimum seeing at guiding to allow mode change.
`static String`	`KEY_MODESWITCHLEFT` To request a mode switch, at least this exposure time must remain.
`static String`	`KEY_MODEWIND` Minimum wind speed at guiding to allow mode change.
`static String`	`KEY_OFFSETAVERAGE` Issued to the local parameter cluster as average offset.
`static String`	`KEY_PINHOLEBACK` Background around pinhole box.
`static String`	`KEY_PINHOLEBOX` Box around pinhole.
`static String`	`KEY_POSITIONERROR` An estimate of the catalog errors in pixels on ccd.
`static String`	`KEY_REACQUIRELEFT` To request a reposition, at least this exposure time must remain.
`static String`	`KEY_ROWTIMING` Row read-out time for bright strip detection.
`static String`	`KEY_SPURIOUSCOUNT` Issued to the local parameter cluster as number of guiding losts.
`static String`	`KEY_SPURIOUSSIGNAL` ADU sum of valid points must not be lower than this.
`static String`	`KEY_VALIDPOINTS` For the offset recovered, at least this number of points with signal.
`static String`	`KEY_WAITONGUIDE` If true, we wait for offset completion on guide.
`private Value`	`lightgain` The value with median of light gain.
`private Value`	`lightloss` The value averaging light-loss
`private Value`	`lostcount` The value counting the severe guiding losts.
`private List<Vector2D>`	`losts` A list of az/alt offsets, used on permanent misses, but not star lost.
`private GuiderMode`	`mode` The current guiding mode, initialized on unit task.
`private int`	`modeswitch` The counter of absolute guider losts for mode change.
`private EncoderOffsetTelescope`	`offsetcommand` Re-use the offset command.
`private List<Vector2D>`	`offsets` A list of az/alt offsets.
`private boolean`	`onstar` True, if we are currently on star.
`private Value`	`pinholemiss` The value averaging pinhole-offsets.
`private static boolean`	`running` If this method is true, another task is running and we exit.
`private int`	`searchbox` Search box on guiding, from guider mode.
`private Value`	`spuriouscount` The value counting the spurious guiding losts.
`private int`	`starlost` The counter of repetitive star-not-visible.
`private int`	`targetlost` The counter of repetitive target failures.
`private Value`	`targetseeing` The value averaging per-target seeing.

Fields inherited from class stella.adapter.GuidingUnit
allowswitch, KEY_SEEING, KEY_WINDMAX, MODE_AUTO, MODE_NORMAL, MODE_SEEING, MODE_TRACKING, MODE_WIND, offrecord, pidrecord

Fields inherited from class stella.adapter.AdapterUnit
ACQUIRETYPE, GUIDERTYPE, PYRAMIDTYPE

Fields inherited from class util.PropertyResources
KEY_NOINITONCREATE, POSTFIX_ALPHABET, POSTFIX_BYTES, POSTFIX_DIR, POSTFIX_EXT, POSTFIX_FILE, POSTFIX_LIST, POSTFIX_MODTIME, POSTFIX_URL

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

Constructors
Constructor and Description

OffAxisTracker(Map<String,String> prop)
Constructs a new guider unit.

Constructors
Constructor and Description
`OffAxisTracker(Map<String,String> prop)` Constructs a new guider unit.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`protected TimerTask`	`createGuiderLoop(long repeatperiod)` Creates the guider loop, which can be used as a timer task.
`protected ErrorEvent`	`doUnitTask(String m)` Doing the unit task means start guiding.
`protected long`	`getExposureTime()` Returns the guider exposure time, available after unit task.
`protected Star`	`getGuideStar()` Returns the guide star.
`protected GuiderMode`	`getMode()` Returns the currently active guider mode.
`protected String`	`getUnitType()` The type of the guider unit is `AdapterUnit.GUIDERTYPE`.
`void`	`init()`
`protected boolean`	`isValid()` We are valid only if a guider mode is set.
`private boolean`	`isViable(double left)` Checks, if sending an error to request new guiding mode or to reposition the telescope is feasible.
`protected void`	`requestMode(String newmode)` Sets the guiding mode as the identifier string.
`protected void`	`resetUnit()` Resets the guider unit.
`private double`	`seeingAndPhotometry(Guiding.RawStar pinhole)` Takes a guiding signal and estimates seeing and photometry from it.
`protected void`	`setExposure(Value timeleft, Value fractional)` Sets the values related to exposure time.
`protected void`	`setGuideStar(Star parsed)` The acquire command carries the right ascension and declination as well as the magnitude and a possible color index of the central target star.
`protected void`	`setGuidingLost(Value losses)` Sets the value counting the spurious guiding losses.
`protected void`	`setLightGain(Value gain)` Sets the value with the light gain median.
`protected void`	`setLightLoss(Value loss)` Sets the value with the light loss averager.
`protected void`	`setMaster(AdapterMaster chef)` Sets the adapter master.
`protected void`	`setPinholeMiss(Value miss)` Sets the value with the target seeing.
`protected void`	`setSeeing(Value seeing)` Sets the value with the target seeing.
`protected void`	`setTargetLost(Value losses)` Sets the value counting the spurious guiding losses.
`protected void`	`setWindPeak(Value windmax)` Sets the value with the high-peaked winds.

Methods inherited from class stella.adapter.GuidingUnit
setAllowSwitch, setIncrease, setOffsetStream, setPIDStream

Methods inherited from class stella.adapter.AdapterUnit
getGuider, getMaster, getTelescope, isManual, setGuider, setManual, setTelescope

Methods inherited from class util.PropertyResources
clone, createFrom, createFrom, createFrom, createInstance, getApplet, getAsResources, getLocate, getPropertiesToKey, getPropertiesToKey, getResource, getResourceAsStream, getResourceFromKey, getResources, hasLocalURLs, initProperties, keyCreate, keyCreate, reload, setApplet

Methods inherited from class util.PropertyContainer
augment, augment, 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, parseObject, reload, removeProperty, requires, 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.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_LOSTCOUNT
```
public static final String KEY_LOSTCOUNT
```
    Issued to the local parameter cluster as number of target losts.
    
    See Also:
    
    Constant Field Values
  - KEY_SPURIOUSCOUNT
```
public static final String KEY_SPURIOUSCOUNT
```
    Issued to the local parameter cluster as number of guiding losts.
    
    See Also:
    
    Constant Field Values
  - KEY_OFFSETAVERAGE
```
public static final String KEY_OFFSETAVERAGE
```
    Issued to the local parameter cluster as average offset.
    
    See Also:
    
    Constant Field Values
  - KEY_LIGHTLOSS
```
public static final String KEY_LIGHTLOSS
```
    Issued to the local parameter cluster as the light loss estimate.
    
    See Also:
    
    Constant Field Values
  - KEY_LIGHTGAIN
```
public static final String KEY_LIGHTGAIN
```
    Issued to the local parameter cluster as the light loss estimate.
    
    See Also:
    
    Constant Field Values
  - KEY_EXPOSURETIMELEFT
```
public static final String KEY_EXPOSURETIMELEFT
```
    The parameter holding the exposure time left.
    
    See Also:
    
    Constant Field Values
  - KEY_FRACTIONALEXPOSE
```
public static final String KEY_FRACTIONALEXPOSE
```
    The parameter holding the fractional exposure time.
    
    See Also:
    
    Constant Field Values
  - KEY_MODEPROPERTIES
```
public static final String KEY_MODEPROPERTIES
```
    Modes are defined as MODE_XXX+this key, e.g. 'normalmodeproperties'.
    
    See Also:
    
    Constant Field Values
  - KEY_ENLARGEGUIDE
```
public static final String KEY_ENLARGEGUIDE
```
    A gray-zone around the guide field for catalog star inclusion.
    
    See Also:
    
    Constant Field Values
  - KEY_WAITONGUIDE
```
public static final String KEY_WAITONGUIDE
```
    If true, we wait for offset completion on guide.
    
    See Also:
    
    Constant Field Values
  - KEY_KEEPGUIDEFITS
```
public static final String KEY_KEEPGUIDEFITS
```
    If true, all guiding fits are kept on disc.
    
    See Also:
    
    Constant Field Values
  - KEY_KEEPGUIDEWHAT
```
public static final String KEY_KEEPGUIDEWHAT
```
    An integer specifying which guider fits to keep.
    
    See Also:
    
    Constant Field Values
  - KEY_ROWTIMING
```
public static final String KEY_ROWTIMING
```
    Row read-out time for bright strip detection.
    
    See Also:
    
    Constant Field Values
  - KEY_APERTURE
```
public static final String KEY_APERTURE
```
    On aperture photometry the radius of the square box, unbinned.
    
    See Also:
    
    Constant Field Values
  - KEY_POSITIONERROR
```
public static final String KEY_POSITIONERROR
```
    An estimate of the catalog errors in pixels on ccd.
    
    See Also:
    
    Constant Field Values
  - KEY_MAGERROR
```
public static final String KEY_MAGERROR
```
    An estimate of the magnitude errors.
    
    See Also:
    
    Constant Field Values
  - KEY_MODECHANGE
```
public static final String KEY_MODECHANGE
```
    Minimum lost guidings to allow mode change.
    
    See Also:
    
    Constant Field Values
  - KEY_MODEFREQUENCY
```
public static final String KEY_MODEFREQUENCY
```
    Minimum frequency of guiding losts to allow mode change.
    
    See Also:
    
    Constant Field Values
  - KEY_MODEWIND
```
public static final String KEY_MODEWIND
```
    Minimum wind speed at guiding to allow mode change.
    
    See Also:
    
    Constant Field Values
  - KEY_MODESEEING
```
public static final String KEY_MODESEEING
```
    Minimum seeing at guiding to allow mode change.
    
    See Also:
    
    Constant Field Values
  - KEY_REACQUIRELEFT
```
public static final String KEY_REACQUIRELEFT
```
    To request a reposition, at least this exposure time must remain.
    
    See Also:
    
    Constant Field Values
  - KEY_ABORTLEFT
```
public static final String KEY_ABORTLEFT
```
    To request an abort, at least this exposure time must remain.
    
    See Also:
    
    Constant Field Values
  - KEY_MODESWITCHLEFT
```
public static final String KEY_MODESWITCHLEFT
```
    To request a mode switch, at least this exposure time must remain.
    
    See Also:
    
    Constant Field Values
  - KEY_FRACTION
```
public static final String KEY_FRACTION
```
    No reposition or change mode after this fraction of exposure time.
    
    See Also:
    
    Constant Field Values
  - KEY_PINHOLEBOX
```
public static final String KEY_PINHOLEBOX
```
    Box around pinhole.
    
    See Also:
    
    Constant Field Values
  - KEY_PINHOLEBACK
```
public static final String KEY_PINHOLEBACK
```
    Background around pinhole box.
    
    See Also:
    
    Constant Field Values
  - KEY_MAXDEVBACK
```
public static final String KEY_MAXDEVBACK
```
    Which quadrant in the background box to use.
    
    See Also:
    
    Constant Field Values
  - KEY_MINSIGNAL
```
public static final String KEY_MINSIGNAL
```
    Signal, if 3 sigma above background.
    
    See Also:
    
    Constant Field Values
  - KEY_VALIDPOINTS
```
public static final String KEY_VALIDPOINTS
```
    For the offset recovered, at least this number of points with signal.
    
    See Also:
    
    Constant Field Values
  - KEY_SPURIOUSSIGNAL
```
public static final String KEY_SPURIOUSSIGNAL
```
    ADU sum of valid points must not be lower than this.
    
    See Also:
    
    Constant Field Values
  - DEFLOSTCOUNT
```
public static final String DEFLOSTCOUNT
```
    The default name of the parameter counting guiding losses
    
    See Also:
    
    Constant Field Values
  - DEFSPURIOUSCOUNT
```
public static final String DEFSPURIOUSCOUNT
```
    The default name of the parameter counting guidng losses
    
    See Also:
    
    Constant Field Values
  - DEFOFFSETAVERAGE
```
public static final String DEFOFFSETAVERAGE
```
    The default name of the parameter counting arcsec offsets.
    
    See Also:
    
    Constant Field Values
  - DEFSEEING
```
public static final String DEFSEEING
```
    The default name of the parameter accumulating guiding seeing.
    
    See Also:
    
    Constant Field Values
  - DEFLIGHTLOSS
```
public static final String DEFLIGHTLOSS
```
    The default name of the parameter accumulating light losses.
    
    See Also:
    
    Constant Field Values
  - DEFLIGHTGAIN
```
public static final String DEFLIGHTGAIN
```
    The default name of the parameter accumulating light losses.
    
    See Also:
    
    Constant Field Values
  - DEFWINDMAX
```
public static final String DEFWINDMAX
```
    The default name of the parameter holding windspeed max.
    
    See Also:
    
    Constant Field Values
  - DEFEXPOSURETIMELEFT
```
public static final String DEFEXPOSURETIMELEFT
```
    The default name of the parameter holding the exposure time left .
    
    See Also:
    
    Constant Field Values
  - DEFFRACTIONALEXPOSE
```
public static final String DEFFRACTIONALEXPOSE
```
    The default name of the parameter holding the fractional exposure time.
    
    See Also:
    
    Constant Field Values
  - DEFENLARGEGUIDE
```
private static final Dimension DEFENLARGEGUIDE
```
    The default pixel enlargement during guide.
  - DEFWAITONGUIDE
```
private static final boolean DEFWAITONGUIDE
```
    If true, we wait for offset completion on guide.
    
    See Also:
    
    Constant Field Values
  - DEFKEEPGUIDEFITS
```
private static final boolean DEFKEEPGUIDEFITS
```
    If true, all guiding fits are kept on disc.
    
    See Also:
    
    Constant Field Values
  - DEFKEEPGUIDEWHAT
```
private static final int DEFKEEPGUIDEWHAT
```
    An integer specifying which guider fits to keep.
    
    See Also:
    
    Constant Field Values
  - DEFAPERTURE
```
public static final int DEFAPERTURE
```
    An integer value of the aperture size.
    
    See Also:
    
    Constant Field Values
  - DEFROWTIMING
```
private static final long DEFROWTIMING
```
    Read out time for a single row, acquire frame.
    
    See Also:
    
    Constant Field Values
  - DEFPOSITIONERROR
```
private static final double DEFPOSITIONERROR
```
    An estimate of the catalog errors in pixels on ccd.
    
    See Also:
    
    Constant Field Values
  - DEFMAGERROR
```
private static final double DEFMAGERROR
```
    An estimate of the mgnitude error.
    
    See Also:
    
    Constant Field Values
  - DEFMODECHANGE
```
private static final int DEFMODECHANGE
```
    The default number of minimum guider losts for mode change.
    
    See Also:
    
    Constant Field Values
  - DEFMODEFREQUENCY
```
private static final double DEFMODEFREQUENCY
```
    The default minimum occurence frequency of guider losts.
    
    See Also:
    
    Constant Field Values
  - DEFMODEWIND
```
private static final double DEFMODEWIND
```
    The default maximum wind speed for non-wind guiding.
    
    See Also:
    
    Constant Field Values
  - DEFMODESEEING
```
private static final double DEFMODESEEING
```
    The default maximum seeing for good seeing guiding.
    
    See Also:
    
    Constant Field Values
  - DEFREACQUIRELEFT
```
private static final double DEFREACQUIRELEFT
```
    The default minimum time left for reacquire requests, ms.
    
    See Also:
    
    Constant Field Values
  - DEFABORTLEFT
```
private static final double DEFABORTLEFT
```
    The default minimum time left for reacquire requests, ms.
    
    See Also:
    
    Constant Field Values
  - DEFMODESWITCHLEFT
```
private static final double DEFMODESWITCHLEFT
```
    The default minimum time left for mode switch requests, ms.
    
    See Also:
    
    Constant Field Values
  - DEFFRACTION
```
private static final double DEFFRACTION
```
    The default maximum fraction for reacquire/mode switch requests.
    
    See Also:
    
    Constant Field Values
  - CONTINUOUSSEEING
```
private static final String CONTINUOUSSEEING
```
    Properties of the internal seeing monitor.
    
    See Also:
    
    Constant Field Values
  - DEFPINHOLEBOX
```
private static final int DEFPINHOLEBOX
```
    Box around pinhole, half-size unbinned.
    
    See Also:
    
    Constant Field Values
  - DEFPINHOLEBACK
```
private static final int DEFPINHOLEBACK
```
    Background around pinhole box.
    
    See Also:
    
    Constant Field Values
  - DEFMAXDEVBACK
```
private static final double DEFMAXDEVBACK
```
    Which quadrant in the background box to use.
    
    See Also:
    
    Constant Field Values
  - DEFMINSIGNAL
```
private static final double DEFMINSIGNAL
```
    Signal, if 3 sigma above background.
    
    See Also:
    
    Constant Field Values
  - DEFVALIDPOINTS
```
private static final int DEFVALIDPOINTS
```
    For the offset recovered, at least this number of points with signal.
    
    See Also:
    
    Constant Field Values
  - DEFSPURIOUSSIGNAL
```
private static final double DEFSPURIOUSSIGNAL
```
    ADU sum of valid points must not be lower than this.
    
    See Also:
    
    Constant Field Values
  - guidingmode
```
private String guidingmode
```
    The identifier of the guider mode, set by the master before unit task.
  - mode
```
private GuiderMode mode
```
    The current guiding mode, initialized on unit task.
  - spuriouscount
```
private Value spuriouscount
```
    The value counting the spurious guiding losts. Reset from master.
  - lostcount
```
private Value lostcount
```
    The value counting the severe guiding losts. Reset from master.
  - highwind
```
private Value highwind
```
    The value with wind peaks.
  - lightloss
```
private Value lightloss
```
    The value averaging light-loss
  - lightgain
```
private Value lightgain
```
    The value with median of light gain.
  - contseeing
```
private final ShelfStatistic contseeing
```
    The value with continuous seeing.
  - targetseeing
```
private Value targetseeing
```
    The value averaging per-target seeing.
  - pinholemiss
```
private Value pinholemiss
```
    The value averaging pinhole-offsets.
  - exposuretimeleft
```
private Value exposuretimeleft
```
    The Value holding the exposure time left.
  - fractionalexpose
```
private Value fractionalexpose
```
    The value holding the fractional exposure time.
  - increase
```
private double increase
```
    A value set from the outside signaling increased exposure time.
  - catalog
```
private Rectangle2D catalog
```
    Extra space on guiding, normally zero.
  - guiderawexpose
```
private long guiderawexpose
```
    The exposure time for the guider without increase.
  - guideexpose
```
private long guideexpose
```
    The exposure time for the guider applied on the CCD.
  - datamin
```
private int datamin
```
    Datamin on guiding, from guider mode.
  - datamax
```
private int datamax
```
    Datamax on guiding, from guider mode.
  - searchbox
```
private int searchbox
```
    Search box on guiding, from guider mode.
  - running
```
private static boolean running
```
    If this method is true, another task is running and we exit.
  - currentguider
```
private int currentguider
```
    Counting the guider frames.
  - onstar
```
private boolean onstar
```
    True, if we are currently on star.
  - guidinglost
```
private int guidinglost
```
    The counter of repetitive guiding failures.
  - starlost
```
private int starlost
```
    The counter of repetitive star-not-visible.
  - targetlost
```
private int targetlost
```
    The counter of repetitive target failures.
  - modeswitch
```
private int modeswitch
```
    The counter of absolute guider losts for mode change.
  - offsetcommand
```
private EncoderOffsetTelescope offsetcommand
```
    Re-use the offset command.
  - offsets
```
private List<Vector2D> offsets
```
    A list of az/alt offsets.
  - losts
```
private List<Vector2D> losts
```
    A list of az/alt offsets, used on permanent misses, but not star lost.
  - guide
```
private Star guide
```
- Constructor Detail
  - OffAxisTracker
```
public OffAxisTracker(Map<String,String> prop)
```
    Constructs a new guider unit. Differnt to acquire, we might have different errors on the catalog for two reasone, first the guider may see not as many stars as the acquire field, thus the the catalog error might be smaller. On the other hand, exposure time is short, thus the magnitude error might be higher.
- Method Detail
  - init
```
public void init()
          throws InitException
```
    Specified by:
    
    init in interface Initializable
    
    Overrides:
    
    init in class AdapterUnit
    
    Throws:
    
    InitException
  - isValid
```
protected boolean isValid()
```
    We are valid only if a guider mode is set.
    
    Overrides:
    
    isValid in class AdapterUnit
  - getExposureTime
```
protected long getExposureTime()
```
    Returns the guider exposure time, available after unit task.
    
    Specified by:
    
    getExposureTime in class GuidingUnit
  - requestMode
```
protected void requestMode(String newmode)
```
    Sets the guiding mode as the identifier string.
    
    Specified by:
    
    requestMode in class GuidingUnit
  - setMaster
```
protected void setMaster(AdapterMaster chef)
```
    Sets the adapter master.
    
    Overrides:
    
    setMaster in class AdapterUnit
  - setGuidingLost
```
protected void setGuidingLost(Value losses)
```
    Sets the value counting the spurious guiding losses.
  - setTargetLost
```
protected void setTargetLost(Value losses)
```
    Sets the value counting the spurious guiding losses.
  - setWindPeak
```
protected void setWindPeak(Value windmax)
```
    Sets the value with the high-peaked winds.
  - setSeeing
```
protected void setSeeing(Value seeing)
```
    Sets the value with the target seeing.
  - setLightLoss
```
protected void setLightLoss(Value loss)
```
    Sets the value with the light loss averager.
  - setLightGain
```
protected void setLightGain(Value gain)
```
    Sets the value with the light gain median.
  - setPinholeMiss
```
protected void setPinholeMiss(Value miss)
```
    Sets the value with the target seeing.
  - setExposure
```
protected void setExposure(Value timeleft,
                           Value fractional)
```
    Sets the values related to exposure time.
    
    Parameters:
    
    timeleft - The value holding the exposure time left.
    
    fractional - The value holding the fraction of exposure done.
  - getUnitType
```
protected String getUnitType()
```
    The type of the guider unit is AdapterUnit.GUIDERTYPE.
    
    Specified by:
    
    getUnitType in class AdapterUnit
  - getMode
```
protected GuiderMode getMode()
```
    Returns the currently active guider mode.
    
    Specified by:
    
    getMode in class GuidingUnit
  - doUnitTask
```
protected ErrorEvent doUnitTask(String m)
```
    Doing the unit task means start guiding. Only if the guider mode was set to GuidingUnit.MODE_AUTO, the mode is calculated from the current wind, otherwise the appropriate guider mode is loaded. The unit task does not start or create the guider loop, this must be done after the unti task by a call to createGuiderLoop(long).
    
    Specified by:
    
    doUnitTask in class AdapterUnit
    
    Parameters:
    
    m - If the unit supports more than a single mode, otherwise null
    
    Returns:
    
    null on okay, or an ErrorEvent desribing the failure.
  - setGuideStar
```
protected void setGuideStar(Star parsed)
```
    The acquire command carries the right ascension and declination as well as the magnitude and a possible color index of the central target star. This method should be called before the unit task is started.
  - getGuideStar
```
protected Star getGuideStar()
```
    Returns the guide star.
  - createGuiderLoop
```
protected TimerTask createGuiderLoop(long repeatperiod)
```
    Creates the guider loop, which can be used as a timer task. This method must be called after the unit task was done without an error, and piped to the adapter masters timer. For the benefit of knowing the guider period, the adapter master hands over the period in ms at which the task will be scheduled.
    
    Specified by:
    
    createGuiderLoop in class GuidingUnit
  - resetUnit
```
protected void resetUnit()
```
    Resets the guider unit. This is done only on first start of guiding loop, not at each restart, as we than lose the targetcounts.
    
    Overrides:
    
    resetUnit in class AdapterUnit
  - seeingAndPhotometry
```
private double seeingAndPhotometry(Guiding.RawStar pinhole)
```
    Takes a guiding signal and estimates seeing and photometry from it.
    
    Parameters:
    
    pinhole - The direct image of the star on the pinhole
    
    Returns:
    
    The fraction of light lost.
  - isViable
```
private boolean isViable(double left)
```
    Checks, if sending an error to request new guiding mode or to reposition the telescope is feasible. This depends on the value of the exposure time remaining and on the fractional exposure time.
    
    Parameters:
    
    left - The time in ms that must be left on the exposure.

Class OffAxisTracker

Nested Class Summary

Nested classes/interfaces inherited from class util.PropertyResources

Field Summary

Fields inherited from class stella.adapter.GuidingUnit

Fields inherited from class stella.adapter.AdapterUnit

Fields inherited from class util.PropertyResources

Fields inherited from class util.PropertyContainer

Fields inherited from interface util.ResourceSupplying

Fields inherited from interface util.PropertySupplying

Constructor Summary

Method Summary

Methods inherited from class stella.adapter.GuidingUnit

Methods inherited from class stella.adapter.AdapterUnit

Methods inherited from class util.PropertyResources

Methods inherited from class util.PropertyContainer

Methods inherited from class java.lang.Object

Methods inherited from interface util.PropertySupplying

Field Detail

KEY_LOSTCOUNT

KEY_SPURIOUSCOUNT

KEY_OFFSETAVERAGE

KEY_LIGHTLOSS

KEY_LIGHTGAIN

KEY_EXPOSURETIMELEFT

KEY_FRACTIONALEXPOSE

KEY_MODEPROPERTIES

KEY_ENLARGEGUIDE

KEY_WAITONGUIDE

KEY_KEEPGUIDEFITS

KEY_KEEPGUIDEWHAT

KEY_ROWTIMING

KEY_APERTURE

KEY_POSITIONERROR

KEY_MAGERROR

KEY_MODECHANGE

KEY_MODEFREQUENCY

KEY_MODEWIND

KEY_MODESEEING

KEY_REACQUIRELEFT

KEY_ABORTLEFT

KEY_MODESWITCHLEFT

KEY_FRACTION

KEY_PINHOLEBOX

KEY_PINHOLEBACK

KEY_MAXDEVBACK

KEY_MINSIGNAL

KEY_VALIDPOINTS

KEY_SPURIOUSSIGNAL

DEFLOSTCOUNT

DEFSPURIOUSCOUNT

DEFOFFSETAVERAGE

DEFSEEING

DEFLIGHTLOSS

DEFLIGHTGAIN

DEFWINDMAX

DEFEXPOSURETIMELEFT

DEFFRACTIONALEXPOSE

DEFENLARGEGUIDE

DEFWAITONGUIDE

DEFKEEPGUIDEFITS

DEFKEEPGUIDEWHAT

DEFAPERTURE

DEFROWTIMING

DEFPOSITIONERROR

DEFMAGERROR

DEFMODECHANGE

DEFMODEFREQUENCY

DEFMODEWIND

DEFMODESEEING

DEFREACQUIRELEFT

DEFABORTLEFT

DEFMODESWITCHLEFT

DEFFRACTION

CONTINUOUSSEEING

DEFPINHOLEBOX

DEFPINHOLEBACK

DEFMAXDEVBACK

DEFMINSIGNAL

DEFVALIDPOINTS