SDSS J1001+5027: Strong microlensing-induced chromatic variation caught in the act

Open Access

Fig. A.4.

Chromatic offsets of quasar images across the slit for each observation night. These offsets are due to off-axis acquisitions at 6200 Å and DAR. The horizontal dashed line represents the slit axis, while the vertical side of the grey strip corresponds to the slit width of 1 $\overset{″}{.}$ $\overset{\prime \prime }{.}$ 8.

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