Optimal transmission of pulsed laser energy to a target is essential for the maximization of reflected signal power in Debris Laser Ranging (DLR) systems. We describe the use of the PPPP measurement technique to allow compensation for both wavefront aberration, tip/tilt and errors arising from misalignment of the transmit and receive optical axes. This paper provides an update on the bistatic Wavefronts Obtained by Measuring Beam-profiles through Atmospheric Turbulence (WOMBAT) trial1 conducted with the EOS Space Systems 1.8m DLR system2 on Mt Stromlo, Australia, using an adjacent telescope to observe the 170 Hz PPPP intensity profiles.
As space debris in lower Earth orbits are accumulating, techniques to lower the risk of space debris collisions must be developed. Within the context of the Space Environment Research Centre (SERC), the Australian National University (ANU) is developing an adaptive optics system for tracking and pushing space debris. The strategy is to pre-condition a laser launched from a 1.8 m telescope operated by Electro Optics Systems (EOS) on Mount Stromlo, Canberra and direct it at an object to perturb its orbit. Current progress towards implementing this experiment, which will ensure automated operation between the telescope and the adaptive optics system, will be presented.
The Australian National University and EOS Space Systems have teamed up to equip the EOS laser space debris tracking station on Mount Stromlo near Canberra, Australia, with sodium Laser Guide Star (LGS) Adaptive Optics (AO). The AO system is used to correct for laser beam degradation caused by the atmospheric turbulence on the upward infrared laser pulse used to illuminate space debris. As a result, the AO-equipped laser tracking station can track smaller and more distant debris. This paper presents the joint ANU/EOS AO Demonstrator LGS facility requirements, architecture, and performance at the time of the conference.
The SkyMapper wide field telescope is currently in production by EOS and is scheduled for first light in Q1 2007. This telescope will produce high quality images over a 3.4 degree diameter flat field for wavebands from 310 nm to 1000 nm. This paper discusses the optical and opto-mechanical design and tolerancing of the SkyMapper Telescope.