21p 20180811 pjordanov

21P/Giacobini–Zinner 11.08.2018 21h27 – 23h01 UT Bresser 150/750, Canon 100D, 57x90s, 1600ISO 2018 Aug 12.01 UT: m1=8.5, Dia.=4', DC=6, Tail: 7 arcmin, in PA 250 deg …15-cm L (23.4x) …P. Jordanov (Belite Brezi, Bulgaria) measurement on the image: coma – 7.5' tail length – 13.5' tail PA° = 240° Observer: Penko Jordanov

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