The authors present the first astronomical images reconstructed from their autocorrelation functions using an improved version of the simulated annealing algorithm.

Type I post-main-sequence nebulae appear to be characterised by a range of unusual, and in certain cases extreme physical characteristics, including high velocity (and possibly high mass) outflows, and anomalous He, N, and C abundances; a feature which is almost certainly indicative of high mass nebular progenitors. The authors have acquired high

Image sharpening techniques applied to medium size telescopes (approximately 1 m) can improve their resolution by double. A new algorithm for recentering and selecting better quality images has been developed. The authors carried out a comparative study with other algorithms in terms of spatial resolution and photometric response. Conclusions are

Not Available

Not Available

Not Available