iMariner Celestial Navigation 4.5

iMariner Celestial Navigation offers a comprehensive set of tools for celestial navigation, including features such as Sight, Fix, Meridian, Starfinder, and Solar Compass. The application also integrates a Nautical Almanac covering information on the Sun, Moon, planets, and 92 brightest stars, along with astronomical computation capabilities that eliminate the need for traditional HO-249/HO-229 tables.

• Almanac Information Display: Provides data on the Sun, Moon, Venus, Mars, Jupiter, Saturn, and the 92 brightest stars, enabling manual reduction using HO.249 tables if desired.
• Automated Sight Reduction: Calculates Intercept and Azimuth based on observed altitude and time, simplifying the navigational process.
• Data Management: Enables users to save observations by passages and share them via email in CSV format.
• Position Fixing: Utilizes two sights to determine latitude and longitude accurately.
• Meridian Passage Support: Assists in taking essential observations to determine position.
• Sight Preparation Assistance: Offers optimal object suggestions with azimuth, elevation positions, and approximate observation time.

iMariner operates offline as a standalone application without requiring an internet connection. It is designed to be lightweight with optimized calculations for energy efficiency on marine vessels. The toolset also includes a Solar Compass and Moon Compass functionality.

References:

• Brightest Stars Catalog
• • Catalogue of the Brightest Stars (Ochsenbein+ 1988)
  • vizier.u-strasbg.fr
• Algorithms from Astronomical Algorithms by Jean Meeus
• • Planets VSOP87D theoryTables extracted from ftp://ftp.imcce.fr/pub/ephem/planets/vsop87/
  • Moon ELP2000 theory by M. Chapront-Touze and J. Chapront
• Sky Maps: Free maps available from the IAU site at http://www.iau.org/public/constellations/
• DeltaT Value: Obtained from maia.usno.navy.mil