C/2015 F3 (SWAN)

C/2015 F3 (SWAN)
Reported observations:
2015 May  18.90 UT: m1=[11.7, Dia.=1.1′, NEGATIVE... 7.6-cm L f/4 (38x)... Marek Biely (Brno, Czech Republic) [No surprise that it was already not visible as it was fading and getting diffuse rapidly before. Fainter than 11.7 mag.]
2015 May  12.92 UT: m1=15.7 CCD + R filter, Dia.=42″, DC=1... 70-cm f/4 L + CCD... Alexander Baransky (Kyiv comet station MPC 585, Ukraine)
2015 May  10.92 UT: m1=13.5, Dia.=1.3′, DC=2... 32-cm L f/5 (120x)... Uwe Pilz (Leipzig, Germany)
2015 May  10.92 UT: m1=13.9, Dia.=1.5′, DC=0/... 35-cm L (239x)... Jakub Cerny (Senohraby, Czech Republic) [No enhancement of coma using SWAN band filter]
2015 May  07.77 UT: m1=12.5, Dia.=1′, DC=2... 25.5-cm L (70.6x)... Danil Sidorko (Korenovsk, Russia)
2015 May  05.88 UT: m1=15.4 CCD + R filter, Dia.=40″, DC=2, Fantail=3′ in PA: 330-117 deg ... 70-cm f/4 L + CCD... Alexander Baransky (Kyiv comet station MPC 585, Ukraine)
2015 May  05.87 UT: m1=12.5, Dia.=2′, DC=1/... 15-cm f/7 R (65x)... Alexander Baransky (Lisnyky, MPC 585, Ukraine)
2015 May  01.75 UT: m1=12.7, Dia.=1.4′, DC=2... 40.0-cm L f/4.5 (144x)... Seiichi Yoshida (Gunma, Japan)
2015 Apr. 26.86 UT: m1=11.5, Dia.=2′, DC=3... 30.5-cm L f/4.9 (60x)... J. P. Navarro Pina (El Palmar, Murcia, Spain)
2015 Apr. 26.83 UT: m1=11.5 DSRL, Dia.=2′, DC=2... Digital Reflex+0,3m lens... Giuseppe Pappa (Sicily, Italy)
2015 Apr. 25.07 UT: m1=11.2:, Dia.=&2′, DC=0... 7.6-cm L f/4 (38x)... Marek Biely (Brno, Czech Republic) [Already extremely faint spot with no condensation. Limit observation]
2015 Apr. 22.06 UT: m1=9.9, Dia.=2.4′, DC=1/... 7.6-cm L f/4 (38x)... Marek Biely (Brno, Czech Republic) [Comet is higher in the morning. Thanks to it I could see much larger coma and estimated it much brighter]
2015 Apr. 21.94 UT: m1=11.3, Dia.=3.0′, DC=1... 25×100 B... Jakub Cerný (Zachotin, Czech Republic) [Very faint, almost invisible in 40-cm reflector with no or very low condensation]
2015 Apr. 21.85 UT: m1=10.7:, Dia.=&1.5′, DC=0/... 7.6-cm L f/4 (38x)... Marek Biely (Brno, Czech Republic) [Extremely faint and diffuse. Limit observation]
2015 Apr. 20.94 UT: m1=13.6 CCD + R filter, Dia.=1.5’, DC=2... 70-cm f/4 L + CCD... Alexander Baransky (Kyiv comet station MPC 585, Ukraine)
2015 Apr. 20.88 UT: m1=14.7 CCD + R filter, Dia.=36″, DC=3. Tail= >6′ in PA: 345 deg ... 70-cm f/4 L + CCD... Alexander Baransky (Kyiv comet station MPC 585, Ukraine)
2015 Apr. 18.84 UT: m1=12.0, Dia.=1.2′, DC=0... 32-cm L f/5 (120x)... Uwe Pilz (Leipzig, Germany)
2015 Apr. 17.95 UT: m1=10.2, Dia.=~3′, DC=1... 20-cm L f:4 (42x)... Alex Scholten (Eerbeek, Netherlands)
2015 Apr. 15.84 UT: m1=13.5, Dia.=0.5′, DC=1... 32-cm L f/5 (120x)... Uwe Pilz (Leipzig, Germany)
2015 Apr. 15.81 UT: m1=12.2, Dia.=1.6′, DC=1... 25-cm L (100x)... Sandor Szabo (Sopron, Hungary)
2015 Apr. 14.896 UT: m1=9.9,Dia=3′,DC=4... 11.4-cm L f/8 (45x) Neil Norman (Ipswich, England)
2015 Apr. 12.81 UT: m1=12.2, Dia.=1.0′, DC=1... 40-cm L (154x)... Sandor Szabo (Sopron, Hungary)
2015 Apr. 11.896 UT: m1=9.9, Dia.=3′, DC=2... 11.4-cm L f/8 (45x)... Neil Norman (Ipswich, England)
2015 Apr. 10.85 UT: m1=14.5 CCD + R filter, Dia.=30″, Tail= 1′ in PA: 334-13 deg ... 70-cm f/4 L + CCD... Alexander Baransky (Kyiv comet station MPC 585, Ukraine)
2015 Apr. 10.81 UT: m1=11.7, Dia.=1.0′, DC=1... 40-cm L (154x)... Sandor Szabo (Sopron, Hungary)
2015 Apr. 09.90 UT: m1=9.9, Dia.=2.5′, DC=2... 20×60 B... Alexander Baranky (Bucha, Ukraine)
2015 Abr. 07.90 UT: m1=9.5, Dia.=5′, DC=2... 20-cm SCT (77x)... Juan José González (Alto del Cellerón, alt. 1190 m, León, España) [La coma aparece más difusa y también más amplia que la mostrada en mi observación previa de Mar. 28.17 (m1=10.1), ofreciendo una estimación más brillante: m1=9.5. Cielo muy claro de montaña]
2015 Apr. 07.15 UT: m1=10.8 DSRL, Dia.=2′, DC=2... Digital reflex + 0,3m lens... Giuseppe Pappa (Sicily, Italy)
2015 Apr. 06.917 UT: m1=10.3, Dia.=2′, DC-2... 11.4-cm L f/8 (45x)... Neil Norman (Ipswich, England)
2015 Apr. 06.78 UT: m1=10.7 DSRL, Dia.=2′, DC=2... Digital reflex + 0,3m lens... Giuseppe Pappa (Sicily, Italy)
2015 Apr. 05.79 UT: m1=11.0 DSRL, Dia.=2′, DC=4... Digital Reflex + 0,3m lens... Giuseppe Pappa (Sicily, Italy)
2015 Apr. 05.82 UT: m1=10.5, Dia.=1.8′, DC=2... 15.0-cm R f/5 (63x)... Maik Meyer (Frauenstein, Erzgebirge Mts., Germany)
2015 Mar. 31.80 UT: m1=9.8, Dia.=1.0′... 12.0-cm R f/5 (50x)... Uwe Pilz (Leipzig, Germany)
2015 Mar. 30.16 UT: m1=11.0 DSRL, Dia.=2′, DC=4... Digital Reflex+0.3m lens... Giuseppe Pappa (Sicily, Italy)
2015 Mar. 29.17 UT: m1=10.4, Dia.=3′, DC=3, no tail... 15-cm T (27x)... Carlos Labordena (Castellón, España)
2015 Mar. 28.40 UT: m1=10.6, Dia.=2′, DC=3... 30.5-cm L f/4.9 (88x)... Todd Augustyniak (Spring Grove, Illinois, USA) [Diffuse with slight brightening towards center.  Visibility enhanced with a Lumicon Comet Filter.  Movement tracked for an hour]
2015 Mar. 28.16 UT: m1=10.0, Dia.=3′, DC=3/... 25×100 B... Juan José González (Alto de la Camperona – Sotillos de Sabero, alt. 1600 m, León, España) [En 20 cm SCT (100x): m1=10.1, Dia.=4′, DC=3... Estrellas de campo comprobadas en el DSS. Coma elongada en AP 0º. Movimiento rápido seguido durante 30 minutos. Altura sobre el horizonte : 16º. Cielo muy claro de montaña]
2015 Mar. 27.43 UT: m1=10.5, Dia.=3′, DC=3... 37-cm L (64x and 142x)... Bob King [Fairly diffuse object that brightened somewhat with a Swan-band filter. Easy low power object]
2015 Mar. 26.47 UT: m1=10.3, Dia.=2.3′... 20-cm L (43x)... Alan Hale (Cloudcroft, New Mexico, USA)
2015 Mar. 26.06 UT: m1=11.0: CCD Dia.=&3.8′, Tail=&12.5′ in PA: 356 deg ... 0.3-m f/1.5 astrograph + CCD... G. Borisov & T. Prystavski (MARGO – MPC L51 Crimea-Nauchnij)