Features
Displayed Objects
- Stars brighter than 7th magnitude
- Color and brightness for 16,226 stars
- Shows name for 254 stars
- Major Variables simulated
- Twinkles like actual stars
- Displays the Sun, simulates daylight and twilight sky
- Calculates and displays the Moon's shape and phase
- Displays the 8 planets and Pluto
- Shows name, line and picture for all 88 constellations
- Displays numbers and names of Messier objects
- Displays the Milky Way with real tone
- Displays comets with accurate position and magnitude. Data can be downloaded whenever available
- Shows Meteor Shower Radiants
- Simulates and beautifully displays Solar Eclipses (Total, Annular, Partial)
- Double-tap or touch and hold object to show its information
- Coordinate (Equatorial/Zodiacal/Galactic/Alt-Azimuth) for every object
- Time of rise, culmination and set, with chart
- Magnitude and color index for stars, peak season for meteor showers, apparent diameter for planets, etc.
Setting
- Displays landscape and altitude/azimuth grid
- Ground can be made transparent to show stars below the horizon
- Equatorial mode, R.A. and declination grid
- 7 degree circle, functional for binocular users
- Tracking mode (Fix selected object to the center)
- Simulates distortion (atmospheric refraction and extinction) at low altitude
- Effects from moonlight and light polution are adjustable
- Simulates every second between 1 Jan 1900 to 31 Dec 2099
- Time zone and Summer time counted
- Free choice of location, instant setting with GPS
Control
- Switches between portrait and landscape screen
- Zoom in and out by pinching(3 to 180 degrees)
- Drag to move through the sky, double-tap for centering
- Animation
- Real-time mode
- Free choice of initial time and speed
- Reversal animation
- Object Search function
- Works with iPhone 3GS digital compass
- Hold towards the sky to display corresponding star-chart
- Arrow navigation for searching object
Requirements
- Hardware: iPhone 3G / 3GS, iPod touch
- Software: OS 3.0 and above
(GPS functions work only for iPhone 3G/3GS, and digital compass only works for iPhone 3GS)
