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).