8月18日的Nautical Almanac应用程序分析

Celestial navigation - Astronavigation Nautical almanac: - Equatorial geocentric coordinates: RA/GHA, Declination for Sun, Moon, and navigational stars and planets . - SD, HP - SHA - GHA Aries Visible sky: - Identification of stars and planets - it plots the visible sky from a position at a certain moment. - Polar and horizon chart. Planning observation: - Twilight - Rise/set for Sun and Moon - Meridian passage Solar time: - GAT, LAT, LMT - Equation of time Sidereal time (Aries): - LHA, GAST, LAST Lunar distances - Three methods of location: by input dialog box, using Google Maps, direct location (provider: GNSS, Network), to initialize your position. For GPS or network location - "Location" App permission must be allowed. Switch on you GPS, and then automatic location detection is possible - Your last position is automatically saved. - Storage permission needed for Google Maps cache and for save your position. Manual and examples at the developer's website.