  Accumulator | Class to compute average and rms of a collection |
| Associations | The class that implements the relations between MeasuredStar and FittedStar |
| AstromFit | |
| CCDgExpStars | Another model, to see whether we improve the situation by adding one scale per exposure, in addition to fitting one scale per CCD |
| CCDgStars | This is the simplest model: we fit one scale per CCD and we do not align the exposures |
| CcdImage | Handler of an actual image from a single CCD |
| AstromFit::Chi2 | Simple structure to accumulate Chi2 and Ndof |
| Chi2Accumulator | Ancillary class to accumulate chi2's |
| Chi2Entry | Class to accumulate chi2 contributions together with pointers to the contributors |
| Chip | Handles the transfos to go from a given image to the system used to fit |
 DistortionModel | Interface class between AstromFit and an actual model for the Mapping (s) from pixels to some tangent plane (aka distortions) |
 ConstrainedPolyModel | This is the model used to fit mappings as the combination of a transformation depending on the chip number (instrument model) and a transformation per shoot (anamorphism). The two-transformation Mapping required for this model is TwoTransfoMapping |
 SimplePolyModel | This is the model used to fit independent CCDs, meaning that there is no instrument model |
| ExpStars | Another model, were we fit juste one scale per exposure |
| FittedStarList | A list of FittedStar s. Such a list is typically constructed by Associations |
| Mapping | Virtual class needed in the abstraction of the distortion model |
| SimpleGtransfoMapping | Class for a simple mapping implementing a generic Gtransfo |
| TwoTransfoMapping | The mapping with two transfos in a row |
| MeasuredStar | Objects measured on actual images. Coordinates and uncertainties are expressed in pixel image frame. Flux expressed in ADU/s |
| MeasuredStarList | A list of MeasuredStar. They are usually filled in Associations::AddImage |
| PmBlock | Objects whose position is going to be fitted. Coordinates in Common Tangent Plane |
| FittedStar | The objects which have been measured several times. The MeasuredStar s measuring the same object in differenr CcdImage s point to the same FittedStar |
| PmFit | A class that handles the fit of relative transformations between a set of images. Also tries to detect proper motions and to incorporate those into the model |
| Prefs | Class to store datacards and user preferences |
| ProjectionHandler | This is a virtual class that allows a lot of freedom in the choice of the projection from "Sky" (where coodinates are reported) to tangent plane (where they are compared to transformed measurements) |
| IdentityProjection | Simplest implementation of ProjectionHandler. Means that coordinates of objects are expressed in the same space as the arrival mapping space. This is useful for fitting transfo rms between images |
| OneTPPerShoot | A possible implementation of ProjectionHandler for fitting actual WCS's |
| RefStar | Objects used as position anchors, typically USNO stars. Coordinate system defined by user. The Common Tangent Plane seems a good idea |
1.8.6
