Comet 123P/West-Hartley
UserAlexsandr Morozov
User`s nameAlexsandr Morozov
Observation's time (UT)2019-04-01 21:30
Toolтелескоп SW 10 dob
Observation's placeNovozybkov
Magnitude12.2
Comparison stars sourceHJ - Magnitudes in the Hipparcos photometric system
MethodS - Sidgwick`s method
Coma diameter(')1.7
Tail's lengthNot set
Condensation2/
Positional angle of tailNot set
Bortl's scaleNot set
Aperture25.4 cm
Focal length (mm)1200
Type of toolL - Newtonian reflector
Magnification120
Field of view (°)0.42
SQM-L in zenith
Light pollution zoneGreen
Lm6.92
Comment
Morris Format2019 Apr 1.9 UT: m1=12.2, Dia.=1.7', DC=2.5 ...25.4-cm L (120x) ...Alexsandr Morozov (Novozybkov, Russia)