Notes. Reference images labelled K1, K2a, and K2b are used for the addition of Ks band single frames to show up the ring arcs or faint satellites. The geocentric, heliocentric distances, and the phase angle given are from the Rings Node of NASA’s Planetary Data System (http://pds-rings.seti.org). The angles B,P,U are the ring opening angle to Earth, Neptune’s pole orientation, and the longitude of Earth measured in the ring plane from the J2000 ascending node of Neptune’s equatorial plane, respectively. For each night of data we computed the image scale, given in mas/pixel and km/pixel. Finally, the rms value is the error estimate of the satellite positions with respect to the ephemerides (Jacobson 2009).