Celestial Nav

We believe celestial navigation is an amazing skill and develop Celestial Nav to offer a simple, yet powerful and all encompassing app for our users.

Celestial Nav is an easy to use, all-in-one tool which offers:
• Celestial navigational computations for your device
• Simple toolbar menu for quick access
• Internally stored perpetual Almanac
• Offline ready and functional without the need for other external tools
• Quick and easy capture celestial observation data
• High accuracy sight reductions
• Star reference tables


SIGHT PLANNING
• Local Hour Angle (LHA) for Aries
• Star tables sorted by name, magnitude, declination, and SHA
• Sunrise, sunset, twilight, and location reference
• Moon phase reference


SIGHT REDUCTION
• High accuracy sight reduction algorithm
• Perpetual Almanac offering accurate data for years 1600 - 3000
• Almanac data for Sun, Moon, Mercury, Venus, Mars, Jupiter, Saturn
• Detailed Almanac data for 58 navigational stars
• Assumed Position (AP) for any user defined position
• Line of Position (LOP) intercept data for accurate course and speed adjustments
• Computational variables displayed for accuracy and validation


CELESTIAL FIX
• Computations by USNO algorithm in the Nautical Almanac
• Save all your LOP in an easy reference table




BASIC VERSION
Free daytime celestial navigation tools using the sun:
• Unlimited sextant sight reduction calculations
• Sight reduction to a line of position using the sun
• Perpetual almanac for the sun
• Advanced sight corrections for index error, eye height, temperature, and pressure
• Support for upper and lower limb reference
• Star Table with navigational references
• Detailed Sun references
• Limited Moon references




PRO FEATURES (IN-APP PURCHASE)
Advanced Day & Night Celestial Navigation includes all BASIC features plus:
• Almanac data for 65 navigational bodies for years 1600 through 3000
• Map display for saved LOPs
• View intercepts with course and speed corrections
• Metric and imperial unit support with automatic conversions
• Support for coordinate entries in different formats (H° M’ S” or Decimals)
• Save all your LOP calculations for future reference
• Save user preferences and settings
• Unrestricted moon references
• Almanac and algorithmic models for 65 navigational bodies:
• Sun, Moon, Mercury, Venus, Mars, Jupiter, and Saturn
• 58 navigational stars

Supported stars: Acamar, Achernar, Acrux, Adhara, Aldebaran, Alioth, Alkaid, Alnair, Alnilam, Alphard, Alphecca, Alpheratz, Altair, Ankaa, Antares, Arcturus, Atria, Avior, Bellatrix, Betelgeuse, Canopus, Capella, Deneb, Denebola, Diphda, Dubhe, Elnath, Eltanin, Enif, Fomalhaut, Gacrux, Gienah, Hadar, Hamal, Kaus Australis, Kochab, Markab, Menkar, Menkent, Miaplacidus, Mirfak, Nunki, Peacock, Polaris, Pollux, Procyon, Rasalhague, Regulus, Rigel, Rigil Kent., Sabik, Schedar, Shaula, Sirius, Spica, Suhail, Vega, Zubengenubi




REFERENCES
Sight reductions and celestial calculations use various internationally accepted r