CometC/2015 V2 (Johnson)
UserCastor 98
User`s nameMarek Biely
Observation's time (UT)2017-03-28 21:28:00
Tool20x80 binoculars
Observation's placeBrno (244 m a.s.l.)
Magnitude9.1
Comparison stars sourceTK - Tycho-2 Catalogue
MethodS - Sidgwick`s method
Coma diameter(')5
Tail's lengthNot set
Condensation4
Positional angle of tailNot set
Bortl's scaleNot set
Aperture8 cm
Focal length (mm)Not set
Type of toolB - Binoculars
Magnification20
Field of view (°)2.5
SQM-L in zenith
Light pollution zone
Lm
Comment
Morris Format2017 Mar 28.89 UT: m1=9.1, Dia.=5', DC=4 ...8-cm B (20x) ...Marek Biely (Brno (244 m a.s.l.), Czech Republic)