Comet C/1989 T1 (Helin-Roman-Alu)
UserHAS02
User`s nameWerner Hasubick
Observation's time (UT)1989-10-22 18:57:00
ToolNot set
Observation's place
Magnitude11.0
Comparison stars source
MethodS - Sidgwick`s method
Coma diameter(')2.9
Tail's lengthNot set
Condensation3
Positional angle of tailNot set
Bortl's scaleNot set
Aperture20.3 cm
Focal length (mm)0
Type of toolT - Schmidt-Cassegrain reflector
Magnification51
Field of view (°)Not set
SQM-L in zenithNot set
Light pollution zone
LmNot set
Comment
Morris Format1989 Oct 22.79 UT: m1=11.0, Dia.=2.9', DC=3 ...20.3-cm (51x) ...Werner Hasubick (, )