Paging through 'Europe and Asia in Space 1993-1994' I came across a drawing of the Koronas satellite. This satellite is based on the improved platform AUOS that was used for the Intercosmos 18 and 19 flights and more sats. It uses the same bus as the original AUOS; as I could check by comparing it with a photograph of Intercosmos 18 in a dutch spacemagazine of april 1979. But the Koronas has an upperstructure withan instrument platform; also four solarpanels and two solarpanels with an extra antenna extension at the top of the bus and with a lenght of about twice the height of the bus or the upperstructure. Thes panels give the sat a six-winged windmill look. >From the middle of the bus four rodlike antenna's extand. Koronas has a diameter of 2.3 m and a height of 5.0 m with a total span of 12.8 m. Perhaps Intercosmos 19 looks a bit like Koronas? Nicholas L. Johnson, the principal scientist of the above book, can perhaps trow some light on this? -- Greetings and clear skies Leo Barhorst Alkmaar The Netherlands 52.65 North 4.47 East 3 m ASL Every day I wonder about what I see in the sky