Supported Hardwares and OS (as of Ver.2.9.0)

  • Hardware: iPhone 3GS or later, iPod touch 3rd generation or later, iPad (*1)
  • OS: iOS 6.1 or later

*1: The iPad provides iPhone-compatible mode.

Features

Displayed Objects

  • 42,943 stars brighter than 8th magnitude
    • Star brightness and colors reproduced
    • Common names for 254 bright stars
    • Major variable stars
    • Stars twinkle as in reality
  • Sun, moon and the planets
    • Moon phases
    • Exaggerated and real-size display
    • Transit of Mercury and Venus
  • The 88 constellations
    • Constellation names, lines and pictures
    • Asterisms (e.g. Summer Triangle)
  • Nebulae and star clusters (Messier)
    • Catalog number and popular names
  • Comets
    • IDs, Names, and Tails
    • Data update possible as needed
  • Meteors
    • Sporadic meteors
    • Shower meteors and their radiants
  • Daylight, dusk and dawn effects
  • Milky Way
    • The shade of the Milky Way
  • Eclipses
    • Solar eclipses (total, annular, partial)
    • Lunar eclipses (total, partial)
  • Spacecraft
    • Hayabusa 2
  • Object information displayed upon tapping on an object
    • Images of major objects
    • Coordinates (equatorial, ecliptical, galactic, horizontal)
    • Rise, set, transit times, current time on a comprehensive graph
    • Magnitude and color index for stars, meteor showers peaks, apparent diameters for planets, etc.

Settings

  • Display of a landscape and altitude/azimuth grid
  • Option of showing stars and objects below horizon
  • Display of right ascension/declination grid
  • Tracking by fixing objects in the center of the screen
  • Adjustable simulation of moonlight and light pollution effects
  • Simulation for every second between 1 Jan 1900 to 31 Dec 2099
    • Date/time control by touch and finger slide
  • World time zones, daylight saving time
  • Manual input of latitude, longitude, altitude, or GPS acquisition (*2)
  • Night vision mode to protect the dark-adapted eye

Controls

  • Simple, easy-to-use interface
  • Portrait and landscape display modes supported
  • Pinch to zoom in and out within 3 and 180 degree FOV
  • Drag to move freely through the sky, double-tap to center
  • Animation
    • Real-time replay
    • Selection of animation start time
    • Animation speed in 6 intervals
    • Reverse time replay
  • Object Search
  • Electronic compass (*2)
    • Point your phone at the sky to show the starry sky in actual view.
    • Arrow pointer-assisted navigation to sought objects.
  • Bookmarking and saving of scenarios
    • Save and load favorite screen scenarios as bookmarks.
    • Copy favorite scenarios as URL (share the copied URL as a web page or via email with other iStellar users).

*2: GPS function and electronic compass are usable with iPhone only (not usable with iPod touch).