During a series of tests I recovered EKBO 2000 CN105 at 21.6 mag.
This was during a series of observed magnitude tests to see the performance
of the instrument. In fact the instrument reached 22.2 magnitude the night of the recovery of this very distant minor planet beyond the Solar System.
See details at:
www.astroshack.net/eamonn.php
Eamonn A