CometC/2015 V2 (Johnson)
UserKoalin
User`s nameDarius Gasiūnas
Observation's time (UT)2017-04-13 23:20
ToolSW 8" Newton
Observation's placeДеревня Dindos, Ignalinos район, Литва
Magnitude9.5:
Comparison stars sourceTK - Tycho-2 Catalogue
MethodM - Morris`s method
Coma diameter(')2.5
Tail's lengthNot set
Condensation4/
Positional angle of tailNot set
Bortl's scaleNot set
Aperture20.3 cm
Focal length (mm)1000
Type of toolL - Newtonian reflector
Magnification82.2
Field of view (°)0.88
SQM-L in zenith
Light pollution zone
Lm
CommentComet +64° Mon +16°, 93 %
Morris Format2017 Apr 13.97 UT: m1=9.5:, Dia.=2.5', DC=4.5 ...20.3-cm L (82.2x) ...Darius Gasiūnas (Деревня Dindos, Ignalinos район, Литва, )