Figures to explain microlensing parallax

[rachel3834]

From suggestions by Radek Poleski:

• A figure similar to Fig 1 in http://adsabs.harvard.edu/abs/2003A%26A...412...81R
• Figures similar to plot 1.12 and 1.13 in Jan Skowron's thesis: http://www.astrouw.edu.pl/~jskowron/PhD/
  Noting Polish translations:
  zrodlo - source
  soczewka - lens
  plaszczyzna - plane
  Plot 1.12 shows how the source position projected on the lens plane changes for an observer on 1au orbit.
• A figure that shows that satellite observes different u value than ground-based observer at the same time (i.e. the same lens and source positions).