Left panel: the field of Swift J1749.4–2807 observed in the H-band on 2010 Aug. 30. The black circle represents the X-ray error circle (1.6′′ radius, 90% c.l.). North is up and east to the left. Image size is 5.4′′ × 5.4′′. Right panel: the result of image subtraction between the images obtained on Aug. 30 and Aug. 31.
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