CometC/2019 Y1 (ATLAS)
UserJerzy Bohusz
User`s nameJerzy Bohusz
Observation's time (UT)2020-04-21 21:21:00
ToolTNAk 250 mm
Observation's placeMyślin
Magnitude8.3
Comparison stars sourceTK - Tycho-2 Catalogue
MethodS - Sidgwick`s method
Coma diameter(')5.2
Tail's lengthNot set
Condensation4
Positional angle of tailNot set
Bortl's scaleNot set
Aperture25 cm
Focal length (mm)1175
Type of toolL - Newtonian reflector
Magnification53.4
Field of view (°)1.22
SQM-L in zenith
Light pollution zone
Lm
Comment
Morris Format2020 Apr 21.89 UT: m1=8.3, Dia.=5.2', DC=4 ...25-cm L (53.4x) ...Jerzy Bohusz (Myślin, Poland)