C/2015 O1 (PANSTARRS)

C/2015 O1 (PANSTARRS)
Reported observations:
2017 Aug. 14.47 UT: m1=14.1, Dia.=0.4’, DC=3, ... 25-cm L f:5 (166x) ... Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse, slight brightening to centre. Comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ]
2017 Aug. 10.38 UT: m1=14.3, Dia.=0.8’, DC=3, ... 25-cm L f:5 (83x) ... Chris Wyatt (Walcha, NSW, Australia) [Coma very small and diffuse, visible in periods of good seeing. Comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ]
2017 July 14.96 UT: m1=14.5, Dia.=0.2', DC=7, ... 20-cm SCT (133x) ... Juan Jose Gonzalez (Alto del Castro - Aralla, Leon, Spain; Alt. 1720 m, 42º 54' N, 5º 48' W) [In-focus method. APASS comparison stars. SQM: 21.6]
2017 June 30.62 UT: m1=14.7, Dia.=0.2’, DC=5/6, ... 25-cm L f:5 (166x) ... Chris Wyatt (Walcha, NSW, Australia) [Coma very small, just visible near mag 13.3 star. Comparison stars checked using APASS data in Guide 9.0; Method= M; Cat= AQ]
2017 June 17.93 UT: m1=14.9 CCD, Dia.=0.26', DC=8/, Tail=0.8' in PA: 120 deg., ... 25-cm reflector f/4.7 ... Sergey Shurpakov (Baran’, Belarus) 
2017 May 26.95 UT: m1=14.8 CCD, Dia.=0.35', DC=8, ... 25-cm reflector f/4.7 ... Sergey Shurpakov (Baran’, Belarus)
2016 Aug. 31.85 UT: m1=16.2, Dia.=0.1′, DC=5... 60-cm L (518x)... Sandor Szabo (Hungary) [Motion was cheched during 20 minutes period]