Screenshots

Description

iMariner Celestial Navigation is a complete toolbox : sight, fix, meridian, starfinder, solar compass
Also embedded : nautical almanac (sun, moon, planets, starts) and astronomical computation (no more need for HO-249/HO-229 tables)

v2.3 : Update the value of DeltaT (67.4s) for 2013 from maia.usno.navy.mil

- displays almanac informations : Sun, Moon, Venus, Mars, Jupiter, Saturn and 92 brightest stars. At this step, you can use these almanac data with HO.249 tables, if you want to reduce manually.

- reduces a sight : getting your observed altitude and the precise time, it calculate Intercept and Azimut. You don't need any calculation ! Simply report Intercept and Azimut to your navigational chart.

- You can save your observations by passages and send them by email in CSV format

- take a fix : with two sights, iMariner is able to calculate your position (latitude/longitude)

- meridian passage : iMariner helps you to take observations mandatory to know your position (latitude/longitude)

- sight preparation : iMariner proposes you the best objects, here position (azimut and elevation), and the approximate time of the day the observation can take (nautical_twilight or nautical dawn).

iMariner is a standalone application. It doesn't require internet connection. It is light and calculations are optimized to save energy on your boat.

Includes a solar compass (and moon compass too).


REFERENCES :

iMariner has been inspirated by astronomical works of the following people.

Brightest Stars Catalog

Extraction of 92 stars >= 2.5 Mag from the vizier catalog, completed with some stars and star names.
V/53A Catalogue of the Brightest Stars (Ochsenbein+ 1988)
This research has made use of the VizieR catalogue access tool, CDS, Strasbourg, France
vizier.u-strasbg.fr
=============================
Le catalogue des etoiles les plus brillantes Catalogue of the brightest stars
Ochsenbein F., Halbwachs J.L. =1987BICDS..32...83O
Ochsenbein F., Acker A., Legrand E., Poncelet J.M., Thuet-Fleck E.
=============================

AlgorithmsFrom the reference book Astronomical Algorithms by Jean Meeus

Planets : VSOP87D theoryTables extracted from ftp://ftp.imcce.fr/pub/ephem/planets/vsop87/ and adapted to Objective-C.

Bretagnon P., Francou G., : 1988, Astron. Astrophys., 202, 309.
Pierre Bretagnon, Gerard Francou Bureau des Longitudes
77, Avenue Denfert-Rochereau F75014, Paris, France

Moon : ELP2000 theory

The lunar ephemeris ELP2000 M. Chapront-Touze and J. Chapront
Service de Mecanique Celeste du Bureau des Longitudes
77, Avenue Denfert-Rochereau F75014, Paris, France


Sky Maps

Free maps from the IAU site : http://www.iau.org/public/constellations/

DeltaT value
maia.usno.navy.mil

What’s New

Version 3.6

Meridian calculation issue :
Sailors navigating in Pacific can have a Time1 and Time2 in different UTC days.
This case was not handled in Meridian calculation.

Ratings and Reviews

crowding_sail ,

Cool app

I've been impressed with this app since I figured out how to use it. Really all I'm doing with it is using it as a calculator for sights I've taken and it's a labor saver. I use a drum sextant and enjoy it. This calculator makes the solution faster to arrive at. That said, I still do it longhand because electronics can, and often will fail. Of course, this is why we still use sextants and windvanes :p

Bud Conroy ,

Excellent app, great service

I use this app every day as a professional navigator. Very good for quick azimuths. iOS update created some color problems. I emailed them, and the problems are fixed with a new version very quickly.

Information

Seller
Denis Froschauer
Size
39.1 MB
Category
Navigation
Compatibility

Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.

Languages

English, French

Age Rating
Rated 4+
Copyright
© iMariner Software
Price
$26.99

Supports

  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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