CometC/2013 US10 (Catalina)
UserNorm
User`s nameNeil Norman
Observation's time (UT)2016-02-03 19:11:00
ToolTelescope
Observation's placeIpswich
Magnitude7.1
Comparison stars sourceAE - Planetary magnitudes from the American Ephemeris and Nautical Almanac
MethodS - Sidgwick`s method
Coma diameter(')9
Tail's lengthNot set
Condensation6
Positional angle of tailNot set
Bortl's scaleNot set
Aperture11.4 cm
Focal length (mm)8
Type of toolL - Newtonian reflector
MagnificationNot set
Field of view (°)Not set
SQM-L in zenith
Light pollution zone
Lm6.2
Comment
Morris Format2016 Feb 3.8 UT: m1=7.1, Dia.=9', DC=6 ...11.4-cm L ...Neil Norman (Ipswich, England)