CometC/2015 V2 (Johnson)
UserPeter_Pskov
User`s namePetr Mitrofanov
Observation's time (UT)2017-04-30 21:42
ToolSkywatcher BKP25012
Observation's placePalkino
Magnitude8.7
Comparison stars sourceTK - Tycho-2 Catalogue
MethodM - Morris`s method
Coma diameter(')3
Tail's length5'
Condensation6
Positional angle of tailNot set
Bortl's scaleNot set
Aperture25.4 cm
Focal length (mm)1200
Type of toolL - Newtonian reflector
Magnification42.9
Field of view (°)0
SQM-L in zenith
Light pollution zoneBlue
Lm
Commentmoon (26%, 5 deg)
Morris Format2017 Apr 30.9 UT: m1=8.7, Dia.=3', DC=6, Tail: 5 arcmin ...25.4-cm L (42.9x) ...Petr Mitrofanov (Palkino, Russia)