CometC/2019 Y4 (ATLAS)
Usernikgus
User`s nameНиколай Гусев
Observation's time (UT)2020-04-23 22:00
Tool Celestron SkyMaster 25*100
Observation's placeЗаволжск
Magnitude9.6
Comparison stars sourceHJ - Magnitudes in the Hipparcos photometric system
MethodB - Bobrovnikoff`s method
Coma diameter(')3
Tail's lengthNot set
Condensation4
Positional angle of tailNot set
Bortl's scaleNot set
Aperture10 cm
Focal length (mm)Not set
Type of toolB - Binoculars
Magnification25
Field of view (°)3
SQM-L in zenith
Light pollution zoneGreen
Lm5.7
Comment
Morris Format2020 Apr 23.92 UT: m1=9.6, Dia.=3', DC=4 ...10-cm B (25x) ...Николай Гусев (Заволжск, Россия)