C/2010 B1 (Cardinal)

C/2010 B1 (Cardinal)
2011 Feb. 04.96 UT: m1=13.5, Dia.=0.7′, DC=5... 20-cm SCT (206x)... Juan José González (Valle Peral – Lena, alt. 940 m., Asturias, España) [Estrellas de comparación tomadas de la fotometría Henden del sector de V1261 Ori. Cielo muy claro de montaña]
2011 Jan. 24.93 UT: m1=13.7, Dia.=0.7′, DC=5... 20-cm SCT (133x)... Juan José González (Pandorado, alt. 1190 m., León, España) [Estrellas de campo comprobadas en el DSS. Estrellas de comparación tomadas de la fotometría Henden del sector de V1261 Ori. Cielo muy claro de montaña]
2011 Jan. 02.95 UT: m1=13.7, Dia.=1′, DC=3, no tail... 23.5-cm SCT (188x)... Carlos Labordena (Castellón, España)
2011 Jan. 01.56 UT: m1=13.6, Dia.=1.3’, DC=0/1... 25-cm L f:5 (83x)... Chris Wyatt (Walcha, NSW, Australia) [No tail, coma very faint and diffuse, visible using averted vision. Comp Star= ASAS3 055404-0705.8 Method= S. Cat= AU]
2010 Dec. 31.45 UT: m1=13.5, Dia.=1′, DC=1... 25-cm L f:5 (83x)... Chris Wyatt (Walcha NSW, Australia) [No tail, small diffuse coma, visible with averted vision. Comp Star= ASAS3 055607-0637.7  Method= S. Cat= AU]
2010 Dec. 29.47 UT: m1=13.2, Dia.=1.5′, DC=4/5... 25-cm L f:5 (83x)... Chris Wyatt (Walcha, NSW, Australia) [No tail, bright but small coma, central condensation visible using averted vision in good seeing. Comp Star= GSC-4194-1023 Method= S. Cat= HS]
2010 Dec. 15.55 UT: m1= 13.9, Dia.=1′, DC= 4/5... 25-cm L f:5 (83x)... Chris Wyatt (Walcha, NSW, Australia) [Coma very small and diffuse, visible using averted vision. Comp Star= ASAS 063250-0048.7: Method= S: Cat= AU]
2010 Dec. 12.55 UT: m1= 13.7, Dia.=1′, DC= 1/2... 25-cm L f:5 (83x)... Chris Wyatt (Walcha, NSW, Australia) [No tail, coma small and diffuse, near bright star, seen with averted vision in good seeing. Comp Star= GSC-0147-0330: Method= S: Cat= HS]
2010 Nov. 13.22 UT: m1=13.8, Dia.=0.8′, DC=5... 20-cm SCT (133x)... Juan José González (Collada Llomena – Ponga, alt. 995 m., Asturias, España ) [ Estrellas de campo comprobadas en el DSS. Estrellas de comparación de la fotometría Henden cercana a AK Cnc]
2010 Sep. 19.03 UT: m1=16.5 CCD, Dia.=0.27′, DC=8, Tail= 1.4′ in PA: 354 deg ... 41-cm L f/3.8 +CCD... Sergey Shurpakov (Belarus)
2010 Sep. 01.46 UT: m1=14.6, Dia.=0.3′, Tail=1.2′... 46-cm L + CCD... Artyom Novichonok (Kondopoga, Russia) and Leonid Elenin (Moscow, Russia)