Topic 6: Celestial observation

avatar
Created by
Shelby elliott

Cards (18)

  • Asterisms are unofficial, popular patterns of stars that are often a smaller part of a constellation such as Orion's belt and The Plough
  • Meteors appear as a bright streak of light caused by a dust particle, probably from the tail of a comet, burning up in the atmosphere. They are only visible for a split second.
  • Comets appear as extended fuzzy objects, possibly showing one or two tails, moving slowly against the background of stars from night to night
  • A supernova would appear as a bright new star, would be visible for possibly a few weeks and then slowly fade
  • Planets do not appear to twinkle like stars and move slowly eastwards from night to night within the zodiacal band
  • ⚫️ Cassiopeia
    ⚫️ ⚫️
    ⚫️
    ⚫️
    Schedar
  • o Cygnus, the swan
    o
    Deneb
    ⚫️ ⚫️
    ⚫️
    o
    ⚫️
    o
    ⚫️
  • ⚫️ Crux, the southern cross
    o
    Mimosa⚫️. o ⚫️
    o

    ⚫️
    Acrux
  • o The summer triangle asterism
    o
    Deneb
    ⚫️ o Vega
    ⚫️
    o
    o
    o
    o o
    ⚫️
    Altair
  • <---Follow the arc to Arcturus To Polaris
    ⚫️ ^
    ⚫️ /
    ⚫️ ⚫️
    ⚫️


    ⚫️ ⚫️
  • To andromeda
    \
    ⚫️ ⚫️
    \
    \
    ⚫️ \ ⚫️
    l
    To Fomalhaut
  • Artificial satellites move slowly from north to south and appear as mildly bright points of light before fading from view as they enter the Earth's shadow
  • The stars rise in the east, reach their highest point (culminate) when they are due south as they cross the observers meridian, and set in the west.
  • 23h 56min is one sidereal day
  • Hour angle= local sidereal time - right ascension
  • Altitude of NCP = observers latitude
  • Polar distance= 90 degrees - declination
  • Altitude= latitude + polar distance
    -