Features & Capabilities

The best way to practice Celestial Navigation

Star Pupil is a practice aid for learning Celestial Navigation. It does not merely produce the answers to sight reductions but rather shows all the steps along the way!

Traditional Celestial Navigation is straightforward and requires only a Nautical Almanac, Sight Reduction Tables, and basic arithmetic. However each step must be performed correctly, and small errors, like adding rather than subtracting, are easy to make.

Star Pupil sharpens your traditional Celestial Navigation skills by showing each calculation and each step along the way for performing a Sight Reduction and plotting a Line of Position.

Star Pupil shows all the calculations and steps for:

  • Calculating Ha from Hs using a Nautical Almanac
  • Performing a sight reduction for the Sun and Planets using Pub 229
  • Performing a sight reduction for Stars using either Pub 229 or Pub 249
  • Plotting LOPs for the Sun, Planets, and Stars
  • Plotting multiple LOPs to get a fix

Additionally, Star Pupil shows the steps for finding twilight at your position, and looking up the best stars for taking sights using Publication 249 Volume 1.

User Growth & Download Statistics

App
By:
Richard Craddock
Rating:
5.00
(1)
Version:
1.0.5 Last updated: 2023-09-11
Version code:
859832890
Creation date:
2023-09-06
Compatible devices:
Size:
15.01MB
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Apple Apps Store
Data ingested on:
2026-06-13
Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.
Developed by:
Richard Craddock
Apple Apps Store
https://apps.apple.com/us/app/star-pupil/id6463496579
Website:
http://cradware.com/star-pupil

User Reviews

This app actually helps you get better at doing sights reductions.
by ri*****, 2023-09-06
View all user reviews ›

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