Celestial Nav 3.1.5

Skytip LLC – Freeware – iOS
out of 7 votes

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Celestial Nav offers a comprehensive set of celestial navigation tools, designed for ease of use and accuracy:
<ul>
	<li>Celestial navigational computations directly on your device</li>
	<li>Simple toolbar menu enabling quick access to features</li>
	<li>Perpetual Almanac stored internally for quick reference</li>
	<li>Functional offline, eliminating the need for external tools</li>
	<li>Effortless capture of celestial observation data</li>
	<li>High accuracy sight reductions for precise calculations</li>
	<li>Star reference tables for easy identification</li>
</ul>

Sight Planning:
<ul>
	<li>Local Hour Angle (LHA) for Aries calculations</li>
	<li>Star tables conveniently sorted by name, magnitude, declination, and SHA</li>
	<li>Information on sunrise, sunset, twilight, and location references available</li>
	<li>Moon phase data for accurate planning</li>
</ul>

Sight Reduction:
<ul>
	<li>Utilizes a high accuracy algorithm for sight reduction</li>
	<li>Perpetual Almanac with precise data spanning from the years 1600 to 3000</li>
	<li>Detailed Almanac information on various celestial bodies and stars</li>
	<li>Features Assumed Position (AP) setting and Line of Position (LOP) intercept data for course adjustments</li>
	<li>Computational variables displayed to ensure accuracy</li>
</ul>

Celestial Fix:
<ul>
	<li>Computations based on the USNO algorithm from the Nautical Almanac for reliability</li>
	<li>User-friendly table to save all your LOP information for future use</li>
</ul>

Basic Version:
<ul>
	<li>Free daytime celestial navigation tools focused on the sun</li>
	<li>Unlimited sextant sight reduction calculations available</li>
	<li>Precise sight reduction to a line of position using solar data</li>
	<li>In-depth almanac information for the sun included</li>
	<li>Advanced sight corrections aiding accuracy in calculations</li>
	<li>Detailed star table and Sun references provided</li>
	<li>Limited Moon references are also accessible</li>
</ul>

Pro Features:
<ul>
	<li>In-app purchase unlocks Advanced Day & Night Celestial Navigation features in addition to all BASIC tools</li>
	<li>Data available for 65 navigational bodies from 1600 to 3000</li>
	<li>Map display feature for saved LOPs enhancing visualization and planning capabilities</li>
	<li>Metric and imperial unit support with automatic conversions for user convenience</li>
 <li>Detailed almanac and algorithmic models provided for various celestial bodies including stars and planets like Sun, Moon, Mercury, Venus, and more.</li>

<ul>

<ul><li>Saved LOP calculations can be kept for future references                 </ul>

References:
• 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 with basic features available at no cost. Upgrading to the PRO version grants access to premium characteristics. Free trial subscriptions may be offered with restricted access to PRO features and content. Upon trial expiration, the app reverts to the Basic version, retaining all your data with limited functionalities unless a subscription is purchased.

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