False color image: object DUO-001.
Left:
with its intrinsic magnitude of about 21m (July 2, 1994).
Right:
at its maximum amplification by the mass of another, not directly detectable and probably faint object, when close to the line of sight (August 1, 1994).
Bottom:
the light curve shows a microlensing enhancement of 1.5 magnitude.

Reduction software: C. Alard (Centre d'Analyse des Images).
See J. Guibert: The DUO Programme, p. 6.

DUO-001