March of the Starbugs: Configuring Fibre-bearing Robots on the UK-Schmidt Optical Plane

TL;DR

This paper presents a software system for controlling and deploying fibre-bearing Starbug robots on the UK Schmidt telescope's optical plane, enabling efficient, collision-free reconfiguration for astronomical observations.

Contribution

It introduces a novel software control system that manages multiple Starbug robots, ensuring collision-free path planning and real-time hardware control during fibre deployment.

Findings

Successful collision-free path planning for multiple robots

Real-time control with closed-loop feedback from metrology camera

Efficient deployment of 150 fibres on the optical plane

Abstract

The TAIPAN instrument, currently being developed for the Australian Astronomical Observatory's UK Schmidt telescope at Siding Spring Observatory, makes use of the AAO's Starbug technology to deploy 150 science fibres to target positions on the optical plane. This paper describes the software system for controlling and deploying the fibre-bearing Starbug robots. The TAIPAN software is responsible for allocating each Starbug to its next target position based on its current position and the distribution of targets, finding a collision-free path for each Starbug, and then simultaneously controlling the Starbug hardware in a closed loop, with a metrology camera used to determine the position of each Starbug in the field during reconfiguration. The software is written in C++ and Java and employs a DRAMA middleware layer (Farrell et al. 1995).