21p 20180815 pjordanov

21P/Giacobini–Zinner 15.08.2018 21h51 – 22h43 UT Bresser 150/750, Canon 100D, 51x60s, 1600ISO 2018 Aug 15.9 UT: m1=7.6, Dia.=4.5', DC=5, Tail: 6 deg, in PA 250 deg ...15-cm L (28.8x) ...P. Jordanov (Dimitrovgrad-Brod, Bulgaria) measurement on the image: coma – 4' tail length – 14' tail PA° = 245°

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