Ephemeris, star finder, and celestial navigation tool.
Features include:
. Rise, set, and meridian times for all solar system bodies.
. Lunar Phase calendar and animation showing the relative positions of the earth, moon, and sun.
. Images and physical data for planets, moon and sun. Optional display of all 110 Messier objects through separate free download.
. Calculators for Great Circle Distances, Range and Bearing, Horizon Distances, Julian Day, and degree minute seconds conversions.
. Reduction from sextant altitude to observed altitude for any of the 9110 stars, nine planets, and sun and moon.
Planet ephemeris data from Jet Propulsion Laboratory using the DE405 database.
. User interface optimized for simple and fast star, planet, Messier, and Caldwell object identification. Single click on any body to get the name, designation, calculated altitude, azimuth, and magnitude. Drag the cursor to scroll the chart. Zoom in and out with a single click.
. Display of orbital paths for inner solar system bodies showing daily positions for one year centered on current date.
. Animation of the sky in increments of hours, days, weeks, or months.
. Manual or automatic control of star magnitudes. Simple control over which objects to display.
. Black, white, and red star chart colors for normal, bright, and night viewing conditions, respectively.
. Chart can be rotated to any of the 16 compass points and also flipped along the North - South axis. This allows the either overhead (East and West reversed) or non-overhead (East and West normal) viewing.