astro

Class JohnsonTransformation

java.lang.Object

astro.JohnsonTransformation

All Implemented Interfaces:

StarUtilizer, ObjectUtilizer<Star>

public class JohnsonTransformation
extends Object
implements StarUtilizer

See http://www.aerith.net/astro/color_conversion.html

Author:

wooz

Field Summary

Fields

Modifier and Type	Field and Description
static String	BI
static String	BIerr
static String	BVerr
static String	RI
static String	RIerr
static String	RV
static String	RVerr
static String	Verr

Constructor Summary

Constructors

Constructor and Description
JohnsonTransformation()

Method Summary

Modifier and Type	Method and Description
Star	utilize(Star ss) R-V=- 0.508 * (B - V) - 0.040 B-I=2.36 * (B - V)

Methods inherited from class java.lang.Object

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

Field Detail

RI

public static final String RI

See Also:

Constant Field Values

RV

public static final String RV

See Also:

Constant Field Values

BI

public static final String BI

See Also:

Constant Field Values

Verr

public static final String Verr

See Also:

Constant Field Values

BVerr

public static final String BVerr

See Also:

Constant Field Values

RIerr

public static final String RIerr

See Also:

Constant Field Values

RVerr

public static final String RVerr

See Also:

Constant Field Values

BIerr

public static final String BIerr

See Also:

Constant Field Values

Constructor Detail

JohnsonTransformation

public JohnsonTransformation()

Method Detail

utilize

public Star utilize(Star ss)

 R-V=- 0.508 * (B - V) - 0.040
 B-I=2.36 * (B - V)
 

Using Landolt standards, one can find:

 V-R=0.0064+0.3124*(B-V)+0.45715*(R-I)
 -0.314+3.28*(B-V)-0.627*(R-I) (B-V) < 0
 U-B= 0 0<(B-V)<0.4
 0.114-0.1236*(B-V)+1.489*(B-V)^2-0.2466*(B-V)^3-0.9764*(R-I)
 

Specified by:

utilize in interface StarUtilizer

Specified by:

utilize in interface ObjectUtilizer<Star>

Parameters:

ss - The plain star

Returns:

The input star for subclasser's ease.