iMariner Celestial Navigation

iMariner Celestial Navigation

By DFR Editions

  • Category: Navigation
  • Release Date: 2012-03-20
  • Current Version: 3.6
  • Adult Rating: 4+
  • File Size: 37.33 MB
  • Developer: DFR Editions
  • Compatibility: Requires iOS 8.0 or later.


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 - 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 ============================= 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 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 : DeltaT value



  • Cool app

    By crowding_sail
    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