:Base Patterns.HLP
:Title Patterns in TheSky
1 Patterns in TheSky
2 Welcome=Welcome
2 Celestial Bodies
3 Introduction to Celestial Objects=Celestial_Objects
3 Solar System Objects
4 Planets=Planets
4 Planetary Arrangements=Planetary_Arrangements
4 Comets=Comets
4 Minor Planets=Minor_Planets
3 Deep-space Objects
4 Stars=Stars
4 Galaxies=Galaxies
4 Nebulas=Nebulas
4 Clusters=Clusters
3 Catalogs
4 Hipparcos and Tycho Catalogs=Hipparcos_and_Tycho_Catalogs>Main
4 SAO Catalog=SAO_Catalog
4 NGC Catalog=NGC_Catalog
4 Messier Catalog=Messier_Catalog
2 Measuring the Universe
3 The Scale of the Solar System=The_Scale_of_the_Solar_System
3 Demonstration: Overhead view of the Solar System=Overhead_view_of_the_Solar_System
3 Demonstration: Moon and Sun Distance from Earth=Moon_and_Sun_distance_from_Earth
3 Angular Measurement=Angular_Measurement
3 Demonstration: Angular Measurement=Demonstration_Angular_Measurement
3 Demonstration: Angular diameter of the Sun and Moon=Demonstration_Angular_diameter_of_the_Sun_and_Moon
2 Constellations
3 Introduction to Constellations=Constellations
3 Constellation Lines=Constellation_Lines
3 Asterisms=Asterisms
3 Constellation Boundaries=Constellation_Boundaries
3 Demonstration: Constellation Lines and Boundaries=Demonstration_Constellation_Lines_and_Boundaries
2 Precession
3 What is Precession?=Precession
2 Coordinate Systems
3 Earth-based Coordinate System
4 Coordinates on Earth=Coordinates_on_Earth
4 Latitude=Latitude
4 Longitude=Longitude
3 Horizon-based Coordinate System
4 Horizon-based Coordinates=Horizon_Coordinates
4 Altitude=Altitude
4 Azimuth=Azimuth
4 Demonstration: Understanding the Horizon Coordinate System=Demonstration_Understanding_the_Horizon_Coordinate_System
3 Celestial Sphere-based Coordinate System
4 Equatorial Coordinates=Equatorial_Coordinates
4 Declination=Declination
4 Right Ascension=Right_Ascension
2 Projections
3 Displaying the Celestial Sphere=Projections
2 Earth's Journey Around the Sun
3 Seasons, Solstices and Equinoxes=Seasons_Solstices_and_Equinoxes
3 Demonstration: Path of the Sun=Demonstration_Path_of_the_Sun
3 Demonstration: Time Skip of the Sun at noon each day - Horizon based.=Demonstration_Time_Skip_of_the_Sun_at_noon_each_day_Horizon_based_
2 Time
3 What Time is it?=Time
3 Local Sidereal Time=Local_Sidereal_Time
3 Universal Time=Universal_Time
2 Circumpolar Objects
3 Rise, Transit and Set Times=Rise_Transit_and_Set_Times
3 Circumpolar Objects=Circumpolar_Objects
3 Demonstration: Rising, setting and circumpolar objects=Demonstration_Rising_setting_and_circumpolar_objects
2 The Moon
3 Moon Phases=Moon_Phases
2 Eclipses
3 What is an Eclipse?=Eclipses
3 Solar Eclipses=Solar_Eclipses
3 Demonstration: Total Solar Eclipse=Demonstration_Total_Solar_Eclipse
3 Lunar Eclipses=Lunar_Eclipses
2 Conjunctions and Occultations
3 What is a Conjunction?=Conjunctions
3 What is an Occultation?=Occultations
3 Demonstration: Moon occulting Jupiter and Venus=Demonstration_Moon_occulting_Neptune
2 Retrograde Motion and Parallax
3 Retrograde Motion=Retrograde_Motion
3 Demonstration: Retrograde motion of Mars=Demonstration_Retrograde_motion_of_Mars
3 Parallax=Parallax
3 Lunar Motion=Lunar_Motion
3 Demonstration: Parallax due to earth's rotation=Demonstration_Parallax_due_to_earth_s_rotation