ASTRON: Integrated Astro Navigation Software Home Page Astron V2.205. 2020 Apr 30
Date and Time Input Watch Daylight
Year Month Day Hour Minute Second Corr (secs) Saving
Body Data GHA of GHA of Dec of GMT:
Body: Aries Ship's Time:
(Ship's Times)
Observation
Windows
Apparent Body Position   Bearing (°T) Altitude (°)
Assumed Assumed Unidentified body?
Latitude Longitude  
Deg Deg Calculated Calculated
M.m M.m LHA of LHA of
Aries Azimuth (Zn) Altitude (Hc)
 
 
Sextant Altitude Corrections Observer Alt
Sextant Index SD HP
Altitude (Hs) Correction (IC)
Deg (Off Arc +ve) Eye Height (HoE) Limb Parallax Corr Observed
M.m M.m Altitude (Ho)
 
Azimuth and Intercept
Shore Dist (nm): Calc Hs Rise Mer. Passage Set

ASTRON SIGHT LOG AND PLOTTER

COG SOG
Day Hour Minute Second (Degs T) (Knots)


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ASTRON SIGHT PLANNER AND SKY CHART

 
Year - +
Month - +
Day - +
Hour - +
Minute - +
Second
 
 
Lat
Long
 
Sun Altitude
Moon Altitude
Moon Phase
 
 
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ASTRON ALMANAC PAGE

 
Lat
Long
 
This shade indicates
body is above horizon
 
Aries
SHA
GHA
LHA
 
 
Year - +
Month - +
Day - +
Hour - +
Minute -- ++
- +
Second -- ++
- +

ASTRON SETTINGS PAGE


TYPE OF HORIZON Default SEA.
Set to ARTIFICIAL if you are using an artificial horizon.
TOO LIGHT SUN DEPRESSION Suggested value -3.0° (Mid Civil Twilight). Range 0.0° to -6.0°.
TOO DARK SUN DEPRESSION Suggested value -9.0° (Mid Nautical Twilight). Range -6.0° to -20.0°.
TYPE OF
START UP
Default LAST USED.
LAST USED: Start with date/time set to last used values.
PRESENT: Start with date/time set to present time.
SHOW EXTRA DECIMALS Suggested Value 0. Shows EXTRA decimal places. Range 0 to 3.
SHOW LUNAR
ARC DISTANCE
Default YES.
Show on legend bar below Astron and Google Sight Plotters
YES: Show sextant arc (LDs) between selected body and Moon at cursor position.
NO: Don't show it.
ENTER MSL
TEMPERATURE
AND PRESSURE
Default YES.
YES: Always enter MSL Temperature and Pressure.
NO: If Observer Alt > 0, enter AMBIENT Temperature and Pressure.
DELTA-T Default and recommended value: AUTO.
AUTO: Astron uses calculated value for ΔT.
MANUAL: User can enter a specific value.

ASTRON STAR INFORMATION PAGE


ASTRON LUNARS PAGE


Altitude (Hs) Moon Moon Moon
Deg IC HoE Limb SD/Aug Corr Observed Cleared
M.m Altitude (Ho) Altitude (Hcl)
Use calc Hs
IC HoE Limb SD Corr Observed Cleared
Altitude (Hs) Altitude (Ho) Altitude (Hcl)
Use calc Hs

Sextant Arc (LDs) Moon ==== User Entered Values ====
Deg Limb Limb Ass Lat Ass Long
M.m
==== Lunar Revised Values ====
Calc Lat
Calc Long

ASTRON MERIDIAN PASSAGE PAGE

Correct for observer movement and
rate of change of body declination
COG
(degs T)
SOG
(knots)
Dec Rate
(mins/hour)
Observer
Northings
Time
Correction
Latitude Longitude
=== Corrected Meridian Passage Transit ===