C/2016 N6 (PANSTARRS)

C/2016 N6 (PANSTARRS)
Reported observations:
2018 May  15.97 UT: m1=11.6, Dia.=2.0', DC=4, ... 20-cm SCT (133x) ... Juan Jose Gonzalez (Pandorado, Leon, Spain; Alt. 1190 m, 42º 47' N, 6º 00' W) [Sidgwick method. APASS comparison stars. SQM: 21.3]
2018 May  08.92 UT: m1=11.8, Dia.=1.7', DC=5, ... 20-cm SCT (100x) ... Juan Jose Gonzalez (Pandorado, Leon, Spain; Alt. 1190 m, 42º 47' N, 6º 00' W) [Sidgwick method. APASS comparison stars. SQM: 21.2]
2018 May  08.89 UT: m1=12.2, Dia.=1.5', DC=4/, ... 25.4-cm L (120x) ... Alexsandr Morozov (Novozybkov, Russia)
2018 May  06.85 UT: m1=12.7, Dia.=2.0', DC=6, ... 30.5-cm L (94x) ... J. P. Navarro Pina (Puerto de la Cadena, Murcia, España)
2018 May  04.90 UT: m1=11.9, Dia.=1.2', DC=5, ... 20-cm SCT (100x) ... Juan Jose Gonzalez (Alto del Castro, Leon, Spain; Alt. 1720 m, 42º 54' N, 5º 48' W) [Sidgwick method. APASS comparison stars. SQM: 21.3]
2018 May  04.57 UT: m1=12.7, Dia.=1.1', DC=5, ... 40.0-cm L f/4.5 (144x) ... Seiichi Yoshida (Gunma, Japan)
2018 May  03.51 UT: m1=12.3, Dia.=1.4', DC=5, ... 40.0-cm L f/4.5 (144x) ... Seiichi Yoshida (Gunma, Japan)
2018 Apr. 19.86 UT: m1=12.5, Dia.=0.9', DC=4, ... 20-cm L f:4 (106x) ... Martin Lehky (Hradec Králové, Czech Republic)
2018 Apr. 18.89 UT: m1=12.1, Dia.=1.0', DC=5, ... 20-cm SCT (100x) ... Juan Jose Gonzalez (Puerto de Aralla, Leon, Spain; Alt. 1490 m, 42º 54' N, 5º 49' W) [Sidgwick method. APASS comparison stars. SQM: 21.0]
2018 Apr. 18.86 UT: m1=12.5, Dia.=1.1', DC=4/, ... 20-cm L f:4 (106x) ... Martin Lehky (Hradec Králové, Czech Republic)
2018 Apr. 17.86 UT: m1=12.5, Dia.=1.0', DC=4, .. 20-cm L f:4 (106x) ... Martin Lehky (Hradec Králové, Czech Republic)
2018 Apr. 08.93 UT: m1=12.6, Dia.=1', DC=2, ... 25-cm L(105x) ... Valentín Díaz (La Romaneta, Alicante, España) 
2018 Apr. 06.87 UT: m1=12.8, Dia.=1.5', DC=6, ... 60-cm reflector (187x) ... Sandor Szabo (Sopron, Hungary)
2018 Apr. 05.90 UT: m1=12.0, Dia.=1.2', DC=5, ... 20-cm SCT (133x) ... Juan Jose Gonzalez (Alto del Trichero - Soto y Amio, Leon, Spain; Alt. 1190 m, 42º 46' N, 5º 53' W) [Sidgwick method. APASS comparison stars. SQM: 21.5]
2018 Mar. 20.89 UT: m1=12.0, Dia.=1.2', DC=5, ... 20-cm SCT (100x) ... Juan Jose Gonzalez (Villacintor, Leon, Spain; Alt. 930 m, 42º 29' N, 5º 11' W) [Sidgwick method. APASS comparison stars. SQM: 21.3]
2018 Mar. 12.45 UT: m1=12.7, Dia.=1.1', DC=6, ... 40.0-cm L f/4.5 (144x) ... Seiichi Yoshida (Ibaraki, Japan)
2018 Feb. 17.86 UT: m1=12.1, Dia.=1.2', DC=5, ... 20-cm SCT (100x) ... Juan Jose Gonzalez (Alto de la Garandilla - Escuredo, Leon, Spain; Alt. 1140 m, 42º 42' N, 5º 55' W) [Sidgwick method. APASS comparison stars. SQM: 21.0. Field stars checked in DSS]
2017 Dec. 18.80 UT: m1=14.2, Dia.=0.5', DC=5, ... 40.0-cm L f/4.5 (144x) ... Seiichi Yoshida (Ibaraki, Japan)
2017 Nov. 16.23 UT: m1=13.5, Dia.=0.5', DC=4, ... 20-cm SCT (206x) ... Juan Jose Gonzalez (Puerto de Aralla, Leon, Spain; Alt. 1530 m, 42º 54' N, 5º 48' W) [Field stars checked in DSS. Sidgwick method. APASS comparison stars. SQM: 21.1]
2017 Nov. 14.77 UT: m1=[14.5, ... 60-cm L (187x) ... Sandor Szabo (Hungary) [Very close to two 12.7 mag stars, something is there, but NEGATIVE]
2017 Nov. 14.71 UT: m1=14.3, Dia.=0.4', DC=3-4, ... 0.40-m L f/4.4 (360x) ... Gabor Santa (Göd, Hungary) [comet was seen well, round, with some condensation. 27 deg above horizon, nelm=4.5-5.0]
2017 Sep. 22.80 UT: m1=13.7, Dia.=0.7’, DC=3, ... 60-cm reflector (244x) ... Sandor Szabo (Sopron, Hungary)
2017 Aug. 18.99 UT: m1=15.0; Dia.=0.35', DC=0/, ... 0,60-m L (305x) ... Gabor Santa (Hungary) Checked on a photo taken on the same night and same location by Ákos Nagy Mélykuti. 
2017 Apr. 04.95 UT: m1=17.3 CCD, Dia.=0.33', DC=8/, ... 0.25-m f/4.7 reflector + CCD ... Serguey Shurpakov (Observatory C36, Baran', Belarus)
2017 Mar. 17.01 UT: m1=17.4 CCD, Dia.=0.28', DC=8, ... 0.25-m f/4.7 reflector + CCD ... S. Shurpakov (Observatory C36, Baran', Belarus)
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