CometC/2015 V2 (Johnson)
Userantares48
User`s nameP. Jordanov
Observation's time (UT)2017-04-28 19:00
ToolBresser 150/750
Observation's placeDimitrovgrad-Brod
Magnitude8.3
Comparison stars sourceHJ - Magnitudes in the Hipparcos photometric system
MethodS - Sidgwick`s method
Coma diameter(')6
Tail's lengthNot set
Condensation3/
Positional angle of tailNot set
Bortl's scale6
Aperture15 cm
Focal length (mm)750
Type of toolL - Newtonian reflector
Magnification23.4
Field of view (°)2.22
SQM-L in zenith
Light pollution zoneGreen
Lm5.5
Comment
Morris Format2017 Apr 28.79 UT: m1=8.3, Dia.=6', DC=3.5 ...15-cm L (23.4x) ...P. Jordanov (Dimitrovgrad-Brod, Bulgaria)