Collect all aspect-related configuration data here

[FredSchuller]

Create a directory in this repo. to store aspect-related files:

• lens parameters (focal length, diameter, ...)
• apertures geometry
• SAS calibration parameters (diode response, relative gains, dark currents...)
• residual (systematic) pointing corrections
• a link or some way to store the look-up cubes of simulated data, and keep track of their creation date