Official StarTools support forum

Hi, many thanks for the quick reply! I tried to play with the image diameter, and indeed the halo tends to became more "transparent" at larger diameter (I have attached a composite picture with 4 settings: 70, 100 top row, 120, 140 bottom row). Still the "70" settings does not produce any halo with ...

A square halo is present around synthesized stars on OSX (iMac running High Sierra or Mojave) ST 1.5.369MR3 (see attachment as an example). No issue with previous release (1.4.340)

Thanks, Gianlorenzo