Main Input Screen

Body Selector Window

Calendar and Print Options

Sunrise, Sunset, and LAN

Moonrise and Moonset

Accuracy and References

Arc to Time Table

StarPilot Programs

StarPilot Programs

Celestial + Piloting

Need more than just a perpetual almanac?

Please see the Starpath StarPilot
for PC and for TI graphing calculators

StarPilot is the premier celestial navigation program, and its piloting functions make it a joy to all navigators, even those with no immediate plans for celestial navigation.

For a complete demo tour of this program and other Starpath software, please see Starpath StarPilot-PC, which also includes a discussion of the calculator versions.

The navigator’s dream machine. Does all computations that might arise in routine or even special-case navigation: fast, easy and highly accurate — in the middle of the ocean or in coastal and inland waters. StarPilot sets new standards in the field of celestial navigation and in computational solutions to conventional piloting fixes.

StarPilot includes all features found in existing software products on the market plus many new unique features, all in a super-convenient, intuitive user interface designed by practicing navigators and tested many years and thousands of miles underway.

Celestial highlights include a SIGHT PLANNER that plots out the full sky in a radar-like view, showing heights and bearings of all bodies, from which you call a BEST SIGHTS function which displays the best triads of sights for that sky. Once sights are in hand, the SIGHT ANALYZER function fits sequences of data to the correct theoretical shape so navigators can identify the best sights of their set. Celestial fixes can be obtained from its plotted LOPs or from computation. StarPilot also includes a versatile “LUNARS” routine for finding GMT from lunar distances. You can analyze present data or historic data from early explorers. The StarPilot internal almanac is accurate from the 16th century until 2100. [Listed below].

Piloting highlights include numeric solutions to CROSSED BEARINGS and RUNNING FIXES (with or without course changes, current and leeway between bearings), sextant piloting with vertical angles, and numeric solutions to 3-POINT FIXES — using horizontal sextant angles for high precision piloting. All tidal current vector problems are solved, as well as geographic range, all route sailings, tide and current interpolators, bow-angle fixes, wind vectors, speed-time-distance, DR updates by log or speed, and much more. [Listed below].

Piloting and DR functions

  • Rhumbline course and distance
  • Great circle course and distance
  • Great circle waypoints
  • Composite sailing track
  • Traverse Table computations
  • DR update by speed or log
  • Long-distance ETA computes local time and date of arrival
  • Distance off by vertical sextant angle (3 methods)
  • Distance off by two bow angles and distance run
  • Geographic Range computer
  • 3-body fix from sextant angles
  • Running fix from two bearings
  • Find COG and SOG — from course and speed plus set and drift
  • Find course to steer — to make given COG, given set, drift, and speed
  • Find set and drift — from COG and SOG and course and speed
  • Find course to steer and speed — for given ETA across current
  • Speed-time-distance computer
  • Find true wind from apparent
  • Interpolate Tide heights
  • Interpolate Current speeds
  • and more...

Celestial Features

  • Sunrise, Sunset, times and bearings
  • Predict time and height at LAN
  • Nautical and Civil twilight times, and LHA Aries at mid-twilight
  • Moon rise, set, phase, and age
  • Find Longitude and GMT from measured Lunar Distances
  • Find GMT from known position and one sextant sight
  • Precompute Hc and Zn
  • Planet and Star ID by observed height and bearing
  • Unique Sight Planner function plots full sky showing moon, stars, and planets in radar-like display of heights and bearings.
  • Unique Best Sights function computes the best triads of sights in any sky
  • Perpetual almanac accurate from 16th century to 2100
  • Sight reduction of Sun, Moon, Mars, Venus, Jupiter, Saturn... plus Mercury!
  • 173 stars plus Polaris
  • Choose fix from Plotted LOPs or by computation
  • All fixes corrected automatically for speed and course
  • Unique Sight Analyzer function fits your data to the theoretical shape to select the best sights
  • Special center-body mode for artifical horizon data
  • Dip-short mode for sights or practice at shorelines
  • Add angles or times function
  • Latitude by Polaris
  • Latitude and Longitude from LAN sights
  • and more...