The BlueTail of Comet 3I/ATLAS
The tail of interstellar comet 3I/ATLAS is inverted, faint, and very difficult to photograph. Amateur astronomer Michael Jaeger has discovered the trick: “You have to use a blue filter,” he says. Jaeger and his colleague Gerald Rhemann obtained images of the enigmatic object on August 28. Here is one of the images: Jaeger and Rhemann […]
Guidoccio di Giovanni Cozzarelli an eclectic painter
Guidoccio (di Giovanni) Cozzarelli (b Siena, 1450; d Siena, 1516-17) was aainter and illuminator. He trained in the workshop of Matteo di Giovanni, with whom he was associated from about 1470 to 1483 and with whom he is often confused. Early illuminations for the Antiphonals of Siena Cathedral and a number of securely attributed paintings […]