Fig. 8

Images from the POSSI and POSSII survey for the 2 best astrometric microlensing candidates produced with Aladin. The upper two figures show the lens candidate LSPM J0431+5858E (candidate #18). The lens candidate is a white dwarf with an estimated mass of 0.6 M⊙ in 5.6 pc distance and it is a member of a double star system. The two pairs of green plus symbols indicate the double system in the years 1953 and 1992 (the left star is our lens) and the red arrow presents the calculated lens position at the epoch 2000.0. On the bottom panels one can see the second best lensing candidate LSPM J2004+3808 (candidate #20) which has a distance of about 43 pc to the sun. The lens positions in the years 1950 and 1991 are also marked with green plus symbols as well as its position at 2000 is marked with a red arrow. In all images the source star is denoted with a purple cross. One can see that the proper motions of the 2 lensing candidates are correctly given in the LSPM-NORTH catalog.
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