21p 20180812 pjordanov

21P/Giacobini–Zinner

12.08.2018 19h50 – 20h41 UT
Bresser 150/750, Canon 100D, 51x60s, 1600ISO

2018 Aug 12.83 UT: m1=8.0, Dia.=6', DC=5 …15-cm L (28.8x) …P. Jordanov (Dimitrovgrad-Brod, Bulgaria)

measurement on the image:
coma – 7.5'
tail length – 18'
tail PA° = 250°

Observer: Penko Jordanov