Comet 21P/Giacobini-Zinner
UserArtom
User`s nameArtyom Novichonok
Observation's time (UT)2018-07-04 21:07:00
ToolCelestron 6''
Observation's placeSimeiz observatory
Magnitude11.2
Comparison stars sourceAQ - APASS catalog
MethodM - Morris`s method
Coma diameter(')2.1
Tail's lengthNot set
Condensation2
Positional angle of tailNot set
Bortl's scale4.5
Aperture15 cm
Focal length (mm)750
Type of toolL - Newtonian reflector
Magnification60
Field of view (°)0.87
SQM-L in zenith21.0
Light pollution zoneGreen
Lm
Comment
Morris Format2018 Jul 4.88 UT: m1=11.2, Dia.=2.1', DC=2 ...15-cm L (60x) ...Artyom Novichonok (Simeiz observatory, Russia)