Comet17P/Holmes
Userslava03
User`s nameVyacheslav Ivanov
Observation's time (UT)2007-10-31 17:31:00
ToolNE
Observation's placeСаратов
Magnitude3
Comparison stars sourceYG - Yale Bright Star Catalogue
MethodS - Sidgwick`s method
Coma diameter(')3
Tail's lengthNot set
Condensation6
Positional angle of tailNot set
Bortl's scaleNot set
Aperture cm
Focal length (mm)Not set
Type of toolE - Naked eye
MagnificationNot set
Field of view (°)Not set
SQM-L in zenithNot set
Light pollution zoneOrange
LmNot set
Comment
Morris Format2007 Oct 31.73 UT: m1=3, Dia.=3', DC=6...Naked Eye ...Vyacheslav Ivanov (Саратов, Russia)