  SNR0540-69 is a supernova remnant in the LMC, harbouring a young (~1600 yrs)
radio/optical/X-ray pulsar (P=50 ms). Ground based Halpha imaging of the region
has shown a unique spiral-like structure centered around the pulsar. In narrow
band HST imaging, the feature seems resolved in a ring-like structure, probably
ejected by the progenitor star in a pre-supernova phase (> 10^4 yrs ago).
