GridCoords object has many instance attributes that could be made methods decorated with property

[iancze]

The coordinates.GridCoords class creates an object that stores the dimensions of the image plane grid and many other useful derived grids and quantities. The only real parameters of this class are cell_size and npix---every other quantity is derived.

Rather than instantiate these as real instance attributes in __init__, it would be more memory efficient to make all of these derived quantities their own methods that could be decorated with @property. This might even enable some additional error checking in some cases.

[kadri-nizam]

I've been thinking about implementing this. Some of the attributes that require fft computations can be memoized with @functools.cache too so that the results are cached after the first call. This can avoid repeated computations if the attribute is used several times.