Sky Atlas

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    Sky Atlas is not planetarium or simulation software. It is designed analog to a paper atlas for the purpose of looking up sky positions of celestial objects. The electronic form takes advantage of zooming and selection of objects to be displayed or not -- possibilities which are not available to paper. The star chart is plotted on equatorial coordinates. Current horizontal positions, rise & set times, etc. for objects can be viewed after selection of an object of interest. A star chart can be saved to external memory card for documentation purposes, such as websites or blogs.

    The use of Sky Atlas is believed to be simple, intuitive and largely self-explanatory, yet requiring basic knowledge of astronomy and familiarity with your Android phone.

    Atlas Objects
    Opens a list of object categories. Tap on a category to view available objects. Upon selection of an object, its data is shown in a message box, from which to return to selection of another object or choose to center an object on the star chart. Categories which contain a large number of objects are assigned a sub-menu (tap on screen's menu button) which allow to narrow down by various criteria dependent on the nature of the category.
    * Constellations
    * Named Stars
    * Nearby Stars
    * Binary Stars
    * Variable Stars
    * Exoplanets
    * All Messier objects with images
    * Bright deepsky objects with images
    * All Caldwell objects with images
    * Solar System Planets
    * Dwarf Planets & Asteroids
    * Comets
    * Meteor Showers
    * Hubble Objects
    * Kepler Field Overlay
    * Celestial Poles

    This list of items is not directly related to the star chart, but to astronomical time-keeping, information and visualizations.
    * Rise, set, twilight times
    * Day & Night Visualization
    * Planisphere
    * Rectangular view of the sun's vicinity
    * Earth Globe in 3D
    * Moon Atlas in 3D
    * Moon Calendar
    * MSL Curiosity Station
    * 3D planetary phase views
    * Planetary Moons
    * Spacecrafts
    * Pleiades Close-up
    * Solar Eclipses
    * Greek Alphabet
    * Glossary
    * Historical Timeline
    * Zodiacal Signs
    * Martian Moons
    * Plutonian Moons

    This section is for astronomical computing, such as current positions of the Galilean moons, orbit simulation, calculation of optical equipment performance and more.
    * Galilean Moons
    * Orbit Simulator
    * Distances among Stars
    * Speed of Light Simulation
    * Telescope Calculator
    * Binocular Calculator
    * CCD Imaging Calculator
    * Optical Formulae
    * JD-Date/Date-JD Converter

    Star Chart
    * Stars down to magnitude 6.4
    * Constellation lines
    * Constellation boundaries
    * All Messier objects
    * Bright NGC/IC objects
    * All Caldwell objects
    * Sun, moon and planets overlay
    * Equatorial Grid
    * Equator line
    * Ecliptic line
    * Associated object labels
    * Color display
    * Monochrome, negative display
    * Nightview (red display)

    Sky Atlas is designed only for Android phones operating in portrait mode. If you own a tablet please search for "Sky Atlas Tablet".

    Galaxy Precident SCH-M828C and similarly small phones not supported.


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