Celestial Nav 4+

Modern Celestial Navigation

Skytip LLC

Designed for iPad

    • Free
    • Offers In-App Purchases

Screenshots

Description

FREE Basic Access*** Advanced marine and land based sight reductions using an offline perpetual almanac. Tool for accurate navigation, education, and training.

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 references for the most accurate results:
• Jean Meeus - Astronomical Algorithms
• US Naval Observatory (USNO) Almanac and Algorithms
• Hipparcos New Astrometric Catalog, Published 2007
• ELP2000-85


SUBSCRIPTION TERMS
Celestial Nav is free to download and the basic features free to use. A paid upgrade to the PRO version provides access to premium features and additional tools.
We may offer trial subscriptions that give limited time access to all PRO features and premium content for the duration of the trial period. Trial subscriptions automatically expire and the app will revert back to the Basic version thereafter. No data is lost but access and use of premium features will no longer be available.

What’s New

Version 3.2

iOS 18 support with a logo upgrade and full dark mode support.

Tooltips and help features continue to be expanded. Various titles and labels display definitions and further guidance when tapped.

Subscriptions

7 Day Trial License
7 Day Trial License
7 day trial access to PRO features
USD 0.99
30 Day Trial License
30 Day Trial License
30 day trial access to PRO features
USD 2.99

App Privacy

The developer, Skytip LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Location
  • Identifiers
  • Usage Data

Privacy practices may vary based on, for example, the features you use or your age. Learn More

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