HP 41 C Navigation Pac works on the DM42
Posted: Sun Feb 18, 2018 3:54 pm
Today I checked all the navigation programs on the DM42. From the Raw file Navigation
Important is to change the amount of positions in the memory to 100 [ modes] >> [ size 0100] .
On Page 9 from the navigation manual is written for the HP41CX that 54 is sufficient.
This navigation raw fil, simplify the job of combining the best best features of Rhumb-line ( loxodroom) and great-circle sailing.
You can obtain a printed list showing your vessels predicted postion after each day's run along with the rump-line course between the positions.
Course planning programs are :
Great-circle course and distance [XEQ] "GC"
Great- circle position [XEQ]"GCPOS"
Rhumb-line course and distance [XEQ] "RL"
Rhumb-line positions. [XEQ]"RLPOS"
Great-circle plotting and Voyage planning .[XEQ]"GCPLOT" or [XEQ]"GCPLAN"
Dead Reckoning.[XEQ] "DR"
Longitude to Latitude,
This calculates the latitude at which a specified longitude is reached on a great circle defined by two points. [XEQ]"LOTOL"
Celestial navigation programs
Reducing celestial sights is simplified to keying in date, time, sextant height, and the name of the object sighted.
Permissible objects, include 57 navigational stars, Polris, the sun, the Moon, Venus, Mars, Jupiter and Saturn.
Provision is made for substituting nautical almanac values for the computer almanac. After reducing a sight , you can use one of the course-planning programs to update your dead reckoning position.
programs :
Sight reduction and [XEQ]"SIGHT"
Perpetual Almanac- Stars, Sun, Planets, Moon [XEQ]"BODY"
Almanac interpolator [XEQ]"SIGHT"
Calendar functions [XEQ]"D+T" [XEQ]"JD"
Greenwich sidereal Time [XEQ]"GST"
Star Almanac [XEQ]"STAR"
Astronomical coordinate conversion
Equatorial spherical to equatorial rectangular coordinates [XEQ]"LBRYZX"
Ecliptic spherical to equatorial rectangular[XEQ]"LBRYZX"
equatorial rectangular to equatorial spherical coordinates [XEQ]"ZYXdHA"
Kind Regards
Rupert van Swol
Important is to change the amount of positions in the memory to 100 [ modes] >> [ size 0100] .
On Page 9 from the navigation manual is written for the HP41CX that 54 is sufficient.
This navigation raw fil, simplify the job of combining the best best features of Rhumb-line ( loxodroom) and great-circle sailing.
You can obtain a printed list showing your vessels predicted postion after each day's run along with the rump-line course between the positions.
Course planning programs are :
Great-circle course and distance [XEQ] "GC"
Great- circle position [XEQ]"GCPOS"
Rhumb-line course and distance [XEQ] "RL"
Rhumb-line positions. [XEQ]"RLPOS"
Great-circle plotting and Voyage planning .[XEQ]"GCPLOT" or [XEQ]"GCPLAN"
Dead Reckoning.[XEQ] "DR"
Longitude to Latitude,
This calculates the latitude at which a specified longitude is reached on a great circle defined by two points. [XEQ]"LOTOL"
Celestial navigation programs
Reducing celestial sights is simplified to keying in date, time, sextant height, and the name of the object sighted.
Permissible objects, include 57 navigational stars, Polris, the sun, the Moon, Venus, Mars, Jupiter and Saturn.
Provision is made for substituting nautical almanac values for the computer almanac. After reducing a sight , you can use one of the course-planning programs to update your dead reckoning position.
programs :
Sight reduction and [XEQ]"SIGHT"
Perpetual Almanac- Stars, Sun, Planets, Moon [XEQ]"BODY"
Almanac interpolator [XEQ]"SIGHT"
Calendar functions [XEQ]"D+T" [XEQ]"JD"
Greenwich sidereal Time [XEQ]"GST"
Star Almanac [XEQ]"STAR"
Astronomical coordinate conversion
Equatorial spherical to equatorial rectangular coordinates [XEQ]"LBRYZX"
Ecliptic spherical to equatorial rectangular[XEQ]"LBRYZX"
equatorial rectangular to equatorial spherical coordinates [XEQ]"ZYXdHA"
Kind Regards
Rupert van Swol