| Package | Description | 
|---|---|
| org.britastro.grelf.astro | |
| org.britastro.grelf.hopper | 
| Class and Description | 
|---|
| BodyKind
 Identifies kinds of celestial objects. 
 | 
| ChartLimits
 For specifying a rectangular range in RA and Dec. 
 | 
| Dec
 Representation of declination (celestial latitude). 
 | 
| Epoch
 Represent astronomical epochs, such as B1950.0 or J2010.0. 
 | 
| JulianDate
 This class holds a Julian date/time to an accuracy of 1ms. 
 | 
| Magnitude
 Type representing astronomical magnitude. 
 | 
| ProperMotion
 Representing the proper motion of a star, in RA and Dec, with units (always) of arcsec per year. 
 | 
| RA
 Representation of Right Ascension (celestial longitude). 
 | 
| SkyObject | 
| SkyObjectDatabase
 Singleton accessor for all star and deep sky object data. 
 | 
| SkyObjectDatabase.Neighbour
 Object comprising a Star and its separation (Angle) from a given SkyPoint. 
 | 
| SkyPoint
 Representing a celestial position by equatorial coordinates (RA and Dec) for a given Equinox. 
 | 
| SkyPointDialogue
 Presents a user interface for defining a org.britastro.grelf.astro.SkyPoint. 
 | 
| SkyPointDialogueClient
 A creator of a SkyPointDialogue must implement this to get results back. 
 | 
| SkyVector
 Represents a vector on the celestial sphere, eg between two SkyPoints. 
 | 
| Star
 A star can have several ids, from different catalogues. 
 | 
| Variability
 Categorise variable stars, compatible with VarFlag in the Hipparcos data set. 
 | 
| Class and Description | 
|---|
| SkyObject | 
| SkyPoint
 Representing a celestial position by equatorial coordinates (RA and Dec) for a given Equinox. 
 | 
| SkyPointDialogueClient
 A creator of a SkyPointDialogue must implement this to get results back. 
 |