CometC/2013 US10 (Catalina)
Userantares48
User`s nameP. Jordanov
Observation's time (UT)2015-12-18 03:00
ToolBresser 150/750
Observation's placeDimitrovgrad-Brod
Magnitude6.2
Comparison stars sourceHJ - Magnitudes in the Hipparcos photometric system
MethodS - Sidgwick`s method
Coma diameter(')5.5
Tail's lengthNot set
Condensation4
Positional angle of tailNot set
Bortl's scale5
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 Format2015 Dec 18.13 UT: m1=6.2, Dia.=5.5', DC=4 ...15-cm L (23.4x) ...P. Jordanov (Dimitrovgrad-Brod, Bulgaria)