Add a list of observatories below the plot or in table

[wyrzykow]

In the photometry figure below the main plot add a table or list of all observatories we see in the figure. It could even be dynamic, so if you turn off e.g. one filter, the list gets updated. Or simply list all observatories with number of observations in a separate table below the figure (not within the figure and not dynamic). Name + total number of observations.

Once CPCS data will be added, this will be very useful to see who observed the object.

[wyrzykow]

This could be related to an idea: change the plot lagend to the observatories, instead of filters.