Comet C/1987 B1 (Nishikawa-Takamizawa-Tago
UserHAS02
User`s nameWerner Hasubick
Observation's time (UT)1987-01-31 18:00:00
Tool14
Observation's place
Magnitude8.3
Comparison stars source
MethodS - Sidgwick`s method
Coma diameter(')4
Tail's lengthNot set
Condensation4
Positional angle of tailNot set
Bortl's scaleNot set
Aperture8 cm
Focal length (mm)0
Type of tool
Magnification20
Field of view (°)Not set
SQM-L in zenithNot set
Light pollution zone
LmNot set
Comment
Morris Format1987 Jan 31.75 UT: m1=8.3, Dia.=4', DC=4 ...8-cm (20x) ...Werner Hasubick (, )