Comet 21P/Giacobini-Zinner
UserArtom
User`s nameArtyom Novichonok
Observation's time (UT)2018-07-23 23:02:00
ToolCelestron 6''
Observation's placeSimeiz observatory
Magnitude9.3
Comparison stars sourceAQ - APASS catalog
MethodM - Morris`s method
Coma diameter(')4.5
Tail's lengthNot set
Condensation5
Positional angle of tailNot set
Bortl's scale4.5
Aperture15 cm
Focal length (mm)750
Type of toolL - Newtonian reflector
Magnification30
Field of view (°)0
SQM-L in zenith20.95
Light pollution zone
Lm
Comment
Morris Format2018 Jul 23.96 UT: m1=9.3, Dia.=4.5', DC=5 ...15-cm L (30x) ...Artyom Novichonok (Simeiz observatory, Russia)