Observation's detail view

Comet 21P/Giacobini-Zinner
Userjeff42
User`s name
Observation's time (UT)2018-09-20 02:00
Toolorion equinox skywatcher
Observation's placeparc naturel régional du pilat
Comparison stars sourceHJ - Magnitudes in the Hipparcos photometric system
MethodS - Sidgwick`s method
Magnitude7.8
Coma diameter(')4
Tail's lengthNot set
CondensationNot set
Positional angle of tailNot set
Bortl's scale6
Aperture80
Focal length (mm)500
Type of toolR - Refractor
Magnification38.5
Field of view (°)1.77
SQM-L in zenith
Light pollution zoneYellow
Lm
Comment
Morris Format2018 Sep 20.08 UT: m1=7.8, Dia.=4' ...80-cm R (38.5x) ...j-philippe remillieux (parc naturel régional du pilat, france)