The new composable WCS class that replaces lsst::afw::image::Wcs and TanWcs on
DM-10765 is named lsst::afw::geom::SkyWcs. I chose this name to emphasize that this is a 2-dimensional celestial WCS that transforms from pixels to sky coordinates. I feel this is important for two reasons:
- It gives us an easy way to add specialized WCS classes that perform other useful transforms, such as pixels to wavelength (for spectra).
- Most competing software (e.g. astropy, AST) treats a WCS as a more flexible object, handling spectra, data cubes, focal plane coordinates and the like.
I propose to keep the new name.