Celestial by Navimatics

Celestial by Navimatics

Reference
Navigation
7 reviews
⭐️3.3 / 5
Rating
🙌3
Ratings
📼5 scs
Content
📦w/o updates
Updates frequency
🗣❌ unsupported
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All Versions of Celestial by Navimatics

1.5.15183

July 9, 2015

This app has been updated by Apple to display the Apple Watch app icon. - Modern iOS 7/8 UI - Night mode - Includes support for the latest leap second on 2015-06-30 - Misc other fixes and improvements
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1.3.12318

November 20, 2012

iOS 6 and iPhone 5 support

1.2.12177

July 6, 2012

- Retina display improvements. - Now supports the leap second added at midnight between June 30 and July 1, 2012.
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1.1.11006

January 11, 2011

- Added French localization. - Added in-app settings screen. - Miscellaneous other usability improvements.
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1.0.2

October 18, 2010

- Added "Now" button on all date/time entry screens. - Some minor cosmetic changes. - Fixed a problem caused by low memory conditions.
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1.0.1

October 1, 2010

Fixed problem with sunset/sunrise calculation and eastern longitudes.
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1.0.0

September 21, 2010

Price History of Celestial by Navimatics

Description of Celestial by Navimatics

Celestial is a complete package for celestial navigation on your iPad, iPhone or iPod Touch. It can perform celestial sight reductions, calculate fixes, present them visually, manage sights on multiple trips and assist in sight planning. It also includes a complete Almanac of the Sun, Moon, planets and stars. All this for the price of the Nautical Almanac for a single year! In detail: - Supports quick sight reduction. Enter all sight values to quickly calculate an intercept or to double-check your own manual sight reduction. - Includes a comprehensive trip manager that allows you to manage sights taken during a trip. Keep your sights with you forever! - Multiple sights can be grouped and averaged together and a fix can be calculated. Lines of Position (LOP's) and fixes can be plotted on a virtual plotting sheet. - Running fixes are supported! - Includes a star finder and times of rise/set phenomena. Plan your sights and be on deck when it is time. - Includes the complete Almanac of the Sun, Moon, planets, 57 navigational stars, Aries and Polaris for the years 1980-2099. - Context-sensitive screen help for every screen so you always know what the intended function of the software is. - Night mode preserves your night vision. All sight reduction algorithms are based on the algorithms described in the Nautical Almanac (Sight Reduction Procedures). Celestial object positions are predicted using software from the US Naval Observatory. Visit http://navimatics.com or search for "navimatics" in the AppStore for additional navigation products.
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Celestial by Navimatics: FAQ

Does Celestial by Navimatics work on iPads?

Yes, the Celestial by Navimatics app is compatible with iPads.
The Celestial by Navimatics app was developed by Navimatics Corporation.
The minimum iOS requirement: 7.0.
Users have given Celestial by Navimatics a middling rating of 3.3 out of 5.
Navigation Is The Primary Genre Of The Celestial By Navimatics App.
The current version of Celestial by Navimatics is 1.5.15183.
Celestial by Navimatics’s most recent update was on July 1, 2024.
The app first launched on February 5, 2023.
Safe for children to use, no mature themes or inappropriate content.
Celestial by Navimatics currently features the following languages: English, French.
Unfortunately, Celestial by Navimatics is not on Apple Arcade.
Unfortunately, in-app purchases are not part of Celestial by Navimatics.
Unfortunately, Celestial by Navimatics is not tailored for compatibility with Apple Vision Pro.

Screenshots of Celestial by Navimatics

Celestial by Navimatics screenshot #1 for iPhone
Celestial by Navimatics screenshot #2 for iPhone
Celestial by Navimatics screenshot #3 for iPhone
Celestial by Navimatics screenshot #4 for iPhone
Celestial by Navimatics screenshot #5 for iPhone
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Reviews of Celestial by Navimatics

  • Disappointed

    Is anyone writing these 5-star reviews even using this app? I have purchased almost all of the celestial navigation apps on the app store (except StarPilot - too expensive, especially in light of its bad reviews) and Celestial is the LEAST feature rich of them all.

    First off, everything is done based on UTC time. Whenever you make another sight you have to do the conversion from the current time in your head before you enter it. It does have the function to automatically produce the current UTC which helps when entering an actual sight since you can get the current UTC and update to the minutes and seconds of your sight. Way more difficult when entering data for previous data. Also, the rise and set times are only displayed in UTC and you have to do the conversion in your head. The rise and set times were a few minutes off from the times you may find on the internet, but that is probably not a big deal.

    More of a big deal is the accuracy of the sight reductions. I entered 2 sights of the Sun that I had previously made and reduced by hand. Since I had done this at my home and determined the correct fix to my location I know my results are correct.

    The Ha and Ho values produced by Celestial matched my hand calculations, but the Hc was way off. I assume this difference was due to Celestial not calculating from an assumed position (which must be done when your are doing a reduction via table lookup) so I can’t compare it directly to my results. The plot of the sights looked similar to mine but there is not enough detail on the plot to estimate the fix from. The fix it calculated for me was off by more than 20nm. There are no details of how this was calculated, so not idea of why.

    When entering a new sight, you start with no data and have to enter everything again. When doing multiple Sun sights (as most of us do), this is extra unnecessary work when the only thing that needs to change is the sextant altitude and time. In my case it led to an error since the limb defaults to “none” and I forgot to change it on the second sight I entered. It took time to go back and figure out my error.

    One of the major things Celestial is missing is the ability to make a running fix. Are we suppose to stop the boat and take down the sails every time we want to make a fix? Another major omission is the ability to compute an expected altitude that can be used to set your sextant to before making a sight. Not a big deal for the Sun and Moon, but a very big deal when you are trying to find a specific star or planet among all the others in the sky.

    Celestial provides an Almanac function that produces the hourly values of GHA and Dec for the objects that match the Nautical Almanac values pretty well. They give you confidence that the internal calculations are correct, but you can’t do much else with them. You could potentially use them along with the tables from an old almanac, but since no v or d values are given that correction could not be applied when using this method - making this useless.

    Overall functionality is very minimal - and in my trial the fix was simply wrong. Everything is just displayed black and white which kills you night vision when trying to use it for twilight sights. The iPad version is just a scaled up iPhone version with the help information always displayed. Some of the other apps that are available give you a lot more for your money and produce the correct results.
    Single HandedSingle Handed

  • Excellent App

    This app is an excellent value. I have been practicing celestial navigation for over 20 years and have programed calculators to provide almanac data and reduce sights. This app does everything you need. The Sky View feature is very nice and greatly facilitates sight planning. Touching the screen in the Sky View mode provides accurate HC and azimuth values for each body. The plotting function, however, needs improvement; the LOPs are on a small screen with a fixed scale spanning 120 NM. You can't see the area of intersection well enough to estimate the precision of the fix or identify which sights might be outliers and better deleted. Some kind of "pinch to expand" feature would be a big improvement and warrant five stars for the improved app.

    The app does not have some of the nice bells and whistles like sight averaging, star ID from observed altitude and azimuth, or great circle sailing. If you want all that and more you should buy StarPilot, but it is more than twice the price. This app will serve your needs, provide plenty of practice and lots of fun, and, along with a sextant, enable a safe return from the longest voyage in the event space aliens zap all the GPS satellites. Actually, in that case you would need a chronometer too.
    Ol' NavigatorOl' Navigator

  • BridgeMan

    Very usefull apps, fast and easy to use. It helps saving time for calculations, especially to officers like me working on tankers doing celestial navigation in long voyages. There's one more lacking in this program, must have a compass correctors or determining compass error. Hoping to have this updates guys to make this apps complete... I recommend this to a friend....
    Kimboo'sKimboo's
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