CometC/2015 V2 (Johnson)
UserKoalin
User`s nameDarius Gasiūnas
Observation's time (UT)2017-04-04 20:00
ToolSky-Watcher 12 Inch Dobsonian Telescope
Observation's placeДеревня Dindos, Ignalinos район, Литва
Magnitude10
Comparison stars sourceTK - Tycho-2 Catalogue
MethodM - Morris`s method
Coma diameter(')3
Tail's lengthNot set
Condensation5
Positional angle of tailNot set
Bortl's scaleNot set
Aperture30.5 cm
Focal length (mm)1500
Type of toolL - Newtonian reflector
Magnification123.3
Field of view (°)0.58
SQM-L in zenith
Light pollution zone
Lm
CommentComet +31° Mon +47°,61%
Morris Format2017 Apr 4.83 UT: m1=10, Dia.=3', DC=5 ...30.5-cm L (123.3x) ...Darius Gasiūnas (Деревня Dindos, Ignalinos район, Литва, )