This animation hows the shells expansion and evolution. I have joined four images, taken on 4, 6, 8, 10 April with a Vixen Super Polaris R-150S (15 cm f/5) and a SBIG ST-7 CCD camera. It is visible the evolution of the inner region. Every picture has been processed using QMiPS32.
Location: Ceccano(FR) Italy, 213 meters above sea level.
Masi Animation (Animated GIF, 87K)
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