CometC/2019 Y4 (ATLAS)
UserAlexsandr Morozov
User`s nameAlexsandr Morozov
Observation's time (UT)2020-04-14 21:35
Toolтелескоп SW 10 dob
Observation's placeSukhinichi
Magnitude9.5
Comparison stars sourceHJ - Magnitudes in the Hipparcos photometric system
MethodS - Sidgwick`s method
Coma diameter(')7
Tail's lengthNot set
Condensation3
Positional angle of tailNot set
Bortl's scaleNot set
Aperture25.4 cm
Focal length (mm)1200
Type of toolL - Newtonian reflector
Magnification30
Field of view (°)1.33
SQM-L in zenith
Light pollution zoneGreen
Lm6.77
Comment
Morris Format2020 Apr 14.9 UT: m1=9.5, Dia.=7', DC=3 ...25.4-cm L (30x) ...Alexsandr Morozov (Sukhinichi, Russia)