Apps in this category may contain mild or occasional cartoon, fantasy or real-life violence, as well as occasional or mild adult, sexually suggestive or horrifying content and may not be suitable for children under 9 years of age.

12+

Apps in this category may contain occasional mild indecent language, frequent or intense cartoon or real-life violence, minor or occasional adult or sexually suggestive material, and simulated gambling, and may be for children under 12 years of age.

17+

You must be at least 17 years old to access this App.

Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.

Celestial Navigator Screenshots

iPad

iPhone

About Celestial Navigator

Celestial navigation application with
- perpetual almanac
- star finder chart, with animation
- calculation of lines of position ( intercept/delta )
- celestial object data
- meridian passage calculation
- running fix support
- astronomical position calculations, with two or more star observations
- Hipparchus 150 star catalog

Program can be set to use device's sensors (gyro, compass)
to position the star finder chart in real time.
Capture celestial object approximate altitude.

Note that you still need a marine sextant to do celestial navigation,
but the phone sensors may be used for training.

Software for iPhone and iPad, with the same features.
e-book with manual and celestial navigation tutorial.

What's New in the Latest Version 3.6

Last updated on Nov 1, 2022

Old Versions

- Dark mode, better suited for dusk time use
- Moved the main menu to the top
- Fixed saving of Lines of Position to file

Version History

3.6

Nov 1, 2022

- Dark mode, better suited for dusk time use
- Moved the main menu to the top
- Fixed saving of Lines of Position to file

3.0

Feb 18, 2020

- interface redesigned ( dark look )
- Help hints to guide navigation workflow
- e-Book with celnav theory and app usage. Now open with external PDF viewer

2.8

Mar 25, 2019

- organized workflow and interface
- iphone X resolution fix
- improved stability

2.7

Jan 9, 2017

- fixed LOP transport on iphone

2.6.2

Jan 3, 2017

-fixed problem in star finder animation
-fixed misplaced label

2.6

Nov 30, 2016

- fixed startup crash on iOS 10
- fixed problem in map pinch gesture

2.5

Dec 9, 2015

- Auto orientation of star finder chart, using device sensors (compass and gyro)
Point device to the star to see its name.
- Get approximate star altitude, also using device sensors.
Note that it is no substitute for the sextant, which is more precise
- Display of world maps in both situation charts. Used GSHHS charts.
- Pan and pinch gestures in the situation charts (zoom and pan)
- Fixed a couple issues with iOS 9.x

2.1.4

Oct 2, 2015

- fixed incompatibility with iOS 9
( previous version crashed at start time on iOS9 )

2.0.3

Sep 10, 2015

Now runs on iphones, with same features.
Pinch and drag gesture on the star chart to zoom.
Custom design for each device model.
Fixed a few bugs

1.5.1

Sep 8, 2014

-bugs fixed
-interface design changes

1.2.1

Mar 7, 2014

- Improved stability (bug fix)
- iOS 7 compatible style
- revised help text