We present BVR photometric colors of six Uranian and two Neptunian irregular satellites, collected using the Magellan Observatory (Las Campanas, Chile) and the Keck Observatory, (Manua Kea, Hawaii). The colors range from neutral to light red, and like the Jovian and the Saturnian irregulars (Grav et al. 2003a) there is an apparent lack of the extremely red objects found among the Centaurs and K...

Over the past few years high-resolution imaging with adaptive optics has become an important technique with a wide variety of applications in Solar System physics, stellar astronomy, and extragalactic research. Much of the recent progress can be attributed to a few key factors: the growing number of astronomers who have access to user-friendly AO systems, improvements in the limiting magnitude ...

We present a variety of new imaging and kinematic data for the double–lobed radio galaxy Pictor A. The new optical data include HST continuum and [OIII], emission–line images (at a resolution of 25 – 100 mas) and ground-based imaging and spectroscopy (at a resolution of ∼ 1.5). The ground–based images show Hα filaments and loops which extend to the N and W of the optical core. The radio continu...