21p 20180813 pjordanov

21P/Giacobini–Zinner

13.08.2018 ?. 21h16 – 22h06 UT
Bresser 150/750, Canon 100D, 50x60s, 1600ISO

2018 Aug 13.88 UT: m1=7.6, Dia.=5.5', DC=6, Tail: 7 arcmin, in PA 230 deg …15-cm L (28.8x) …P. Jordanov (Dimitrovgrad-Brod, Bulgaria)

measurement on the image:
coma – 6'
tail length – 16'
tail PA° = 250°

Observer: Penko Jordanov