hpcalc.org - HP 49/50 Archive

HP 49/50 Astronomy Programs

The first size listed is the downloaded file size and the second size listed is the size on the calculator.

There are 30 files totaling 9600KB in this category.

Above 1.05   (details) 49/50 ENG   32KB/29KB
ScreenshotGenerates sky charts, text lists, and predictions of satellites, sun, moon, planets and stars. Now parses current Celestrak files, with the indicators [-], [+], and [P] in the satellite names. Designed for the 49g+ and 50g. Now stores satellite preferences on the SD card, so you can keep different constellations on different SD cards. This old version is maintained because it also works on the 49g+.
By Albert P. Gerheim. 2012/12/25

Above 2.0   (details) 49/50 ENG   34KB/31KB
ScreenshotGenerates sky charts, text lists, and predictions of satellites, sun, moon, planets and stars. Now parses current Celestrak files, with the indicators [-], [+], and [P] in the satellite names. Designed for the 50g. Now stores satellite preferences on the SD card, so you can keep different constellations on different SD cards. Version 2.0 uses the serial port of the 50g to communicate with a GPS receiver in NMEA mode or with a Kenwood TH-D7A(G) (or equivalent) Data Radio. New features include extracting time and position data from a GPS receiver, and triggering beacon transmissions from the Data Radio to coincide with satellite availability.
By Albert P. Gerheim. 2007/08/04

ALBW 1.1   (details) 49/50 48 ENG   3KB/1KB
ScreenshotALBW = Allocated Bandwidth. This is a program for satellite communication engineers and planners. It determines the amount of bandwidth required to accommodate a carrier signal on a satellite transponder, given the data rate, coding, and modulation methods. Version 1.1 incorporates occupied bandwidth.
By Mike Richards. 2001/03/02

ASTR   (details) 49/50 ENG   30KB/14-36KB
ScreenshotA collection of astronomy and calendar functions: position, rise, culmination and set time and location for sun, moon and planets, moon phases, calendar, holy days, Julian day, coordinate and time conversions, general rise and set time, daylight saving time switch, great circle distance, compass function.
By Martin A. Lang. 2000/01/28

ASTRO2012 1.0   (details) 49/50 48 ENG   46KB/49KB
Position of the Sun, Moon, 9 major planets+xena. Theories VSOP87B + TOP2010A + corrections from DE422. Date of Easter. Positions of the main satellites of Jupiter, Saturn, Uranus. Comets: Parabolic-Hyperbolic-Elliptic motion. Precession formulae valid +/-200,000 years from J2000. Phases of the Moon.
By Jean-Marc Baillard. 2012/09/15

AstroLib 4.1   (details) 49/50 ENG   15KB/21KB
ScreenshotProvides functions for setting the local time variable, the Dead Reckoning position, Long and Lat and, from these variables, computing the positions, magnitudes, and phases of the stars, planets and moon, and more. Requires DateLib.
By Robert H. Parry and Khanh-Dang Nguyen Thu-Lam. 2006/02/22

Digital Setting Circles 2.0   (details) 49/50 ENG   16KB/17KB
ScreenshotAllows anyone with a telescope equipped with an equatorial mount and setting circles to point and view without any polar alignment. The need for polar alignment is eliminated by a unique system which relies on 2 guide stars.
By Arnold Moy and Khanh-Dang Nguyen Thu-Lam. 2006/02/22

EPHE 2.13   (details) 49/50 48 ENG FRA ESP   406KB/92KB
ScreenshotComputes ephemeris of the sun, planets, the moon, stars, Messier objects, comets, and asteroids. Program allows all kind of coordinates, and also gives distance, magnitude, apparent diameter, phase and rising/transit/setting times. Includes version 2.13 for the 49G/49G+/50G, 1.33 for the 48S/SX and 48G/G+/GX, and full PDF documentation.
By Jean Philippe Eimer. 2007/09/25

EPHE-SysRPL 2.11S-2   (details) 49/50 ENG FRA ESP   83KB/63KB
ScreenshotModified version of EPHE, written by Jean Philippe Eimer. Most routines have been converted to System RPL, hence a faster program. This version only works with the HP 49G/g+.
By Khanh-Dang Nguyen Thu-Lam. 2006/02/02

Gravitational Lensing   (details) 49/50 ENG   23KB/28KB
Einstein's General Theory of Relativity demonstrates that a large mass can deform spacetime and bend the path of light. So, a very massive object, such as a cluster of galaxies can act as a gravitational lens. When light passes through the cluster from an object lying behind it, the light is bent and focused to produce an image or images of the source. The image may be magnified, distorted, or multiplied by the lens, depending upon the position of the source with respect to the lensing mass. The characteristics of the gravitationally lensed image depend upon the alignment of the observer, the lens and the background object. If the alignment is perfect, the resulting image is an Einstein Ring. With this program, one can draw images to see the effect of gravitational lensing. You can easily test the effects of several parameters by changing them and redrawing the image. For the ARM-based calculators only.
By Wouter Dhondt. 2008/08/09

Great Circle 2.0   (details) 49/50 ENG   4KB/1KB
Calculates the great circle distance, in kilometers, between two points on Earth given their latitude and longitude.
By William Mackenzie. 2016/08/02

HO229 2.0   (details) 49/50 ENG   2KB/2KB
ScreenshotThis program will replace all six volumes of the Sight Reduction Tables for Marine Navigation. Since the data in the tables is purely mathematical they never go out of date. The tables are used by knowing LHA, Latitude and Declination and they return HC and Z. Version 2.0 has been rewritten in System RPL for much better performance and a slightly better interface.
By Ben Manthey. 2005/05/27

HPCompass   (details) 49/50 ITA   140KB/1KB
ScreenshotThis program show the sun's track and allows you to find north.
By Giuseppe Belfiore. 2009/06/27

HPlanétarium 3.08   (details) 49/50 48 39/40 ENG FRA   457KB/43KB
ScreenshotHPlanetarium is a free (GPL) planetarium for the HP 39/40/48G/49/50 in which you can move, zoom and unzoom the sky map "in real time". Equatorial/azimutal coordinates, rise/transit/set times, elongation, magnitude and diameter can be computed for main planets. You can also point a Meade telescope, and there is an ephemeris generator. Source code for the HP 49 is provided. A light version (only 24 KB) is available for the HP 48G.
By Khanh-Dang Nguyen Thu-Lam. 2006/12/23

JMOON 2.0   (details) 49/50 ENG   7KB/7KB
ScreenshotJMOON2 allows you to view present, past and future positions of Jupiter's most commonly known moons (Callisto, Europa, Io, Ganymede).
By Arnold Moy and Khanh-Dang Nguyen Thu-Lam. 2006/02/22

Moon Phase Calculation 1.0   (details) 49/50 ENG   98KB/2KB
ScreenshotMoon is a small program to calculate and display the moon phases. It uses the drawing routines provided by Craig Finseth's phase of the moon program (with the modifications to FLIP as suggested by Preston Brown and Juri Munkki), but has an adapted version of the very complicated phase calculation in John Walker's moontool application on the SUN.
By Dan Gerson and Emiliano Llano Díaz. 2012/09/15

MOON6Pt-2005 1.0   (details) 49/50 ENG ITA   245KB/82KB
ScreenshotAstronomy program with around 130 tools. Requires (and includes) Lupa for viewing information. Partially based on older astronomy programs for the 48.
By Montori Giuseppe and others. 2005/06/14

Orbit Determination 1.0   (details) 49/50 48 ENG   41KB/16KB
Determines orbits using the method of Gauss-Herrick-Gibbs for 3 observations and Herget's method for more than 3 observations. Has different utilities to calculate the position of a comet or asteroid. Supports dates in Gregorian or Julian calendar. Accurate position of the Sun.
By Jean-Marc Baillard. 2015/07/26

Plasy   (details) 49/50 ENG DEU   29KB/1KB
ScreenshotA convenient overview of the latest physical and geometrical data of our planetary system in a two-page menu. Updated according to the latest data (November 2001).
By Wolfgang Rautenberg. 2003/12/28

QVSOP 1.01   (details) 49/50 ENG   41KB/17KB
Faster planet positions for 1998-2025. Originally designed for use with Urania but works independently. Includes source code. Based on a User RPL program by Keith Farmer.
By Georg Zotti. 2000/04/29

SATCO 3.1.1   (details) 49/50 48 ENG   381KB/51KB
ScreenshotProvides satellite communications link budgeting, antenna siting, and sun interference calculations for geosynchronous satellites. Generates horizon profile drawings and predicted spectrum analyzer traces. Calculates antenna parameters, and bandwidth allocations. Provides for direct conversion and calculation of decibels and carrier to noise ratios. Compatible with 48GX, 48G+, 49G, 49g+, 48gII, and 50g.
By Mike Richards. 2005/09/03

SatDish 1.1   (details) 49/50 48 ENG   40KB/2KB
ScreenshotA program to determine the transmit gain, receive gain, and figure of merit (G/T) of a parabolic satellite communications antenna. It uses antenna diameter, efficiency, transmit frequency, receive frequency, and receive system noise temperature as inputs. Although developed for satellite communications, it should work with any parabolic antenna system.
By Mike Richards. 2005/06/04

SATlt 1.3   (details) 49/50 ENG   71KB/7KB
ScreenshotLight version of SATCO, a geosynchronous orbit satellite communications calculator. It provides basic information to help with antenna siting and alignment. It also predicts solar conjunctions (sun interference). Version 1.3 includes satellite and city databases.
By Mike Richards. 2002/03/31

Sparcom Celestial Navigation Pac 2.5.1   (details) 49/50 48 ENG   6101KB/128KB
ScreenshotThis is the Sparcom Celestial Navigation Pac based on the celnav.lib by the original author. The package contains a dump of the original card for use in HP 48 emulators or on a memory card, the port of the software to the 49/50 as a library, and the scanned manual as a PDF. The dump is compatible with the 48SX/48GX; the library is compatible with the 49g+/50g. Redistributed with the permission of the family of Dr. Thomas Metcalf.
By Thomas R. Metcalf and Eddie C. Dost. 2009/02/21

StarMaHP 3.2   (details) 49/50 ENG   81KB/78KB
ScreenshotGives a feel for what the sky will look like tonight, next week, last year, or whatever, for beginning astronomers. Includes over 650 stars from all 88 constellations, plus the highly accurate mean positions of the sun, moon, and all 9 planets. It also has zoom features for viewing smaller areas of the sky, solar eclipses, etc, and can correct for light time and parallax.
By Dennis Straley. 2000/11/25

Sun 1.75   (details) 49/50 DEU   85KB/8KB
ScreenshotSun and moon program. For the sun, calculates sunrise and sunset, coordinates, and sun compass. For the moon, calculates culmination coordinates, phase, and distance to the earth. System RPL and User RPL versions included.
By Heiko Arnemann. 2006/05/27

TruHPoint 1.0   (details) 49/50 ENG   15KB/7KB
ScreenshotProvides satellite antenna pointing angles with 3 decimal point accuracy. Allows accurate calibration of antenna tracking systems. Based on Intelsat Earth Station Standard (IESS) 412.
By Mike Richards. 2002/03/31

W-Weibull 3.2008   (details) 49/50 ESP   757KB/11KB
ScreenshotThis program calculates the probability of dividing ceramic by the Weibull model.
By Tony Wiljanden Parada Trujillo. 2008/08/09

XTime 1.1   (details) 49/50 48 ENG   21KB/14KB
ScreenshotExtended Time, Date, Calendar and Astronomical routines for the HP 48G(X) and 49G(+). Part of these routines are ported from the invaluable HP-41C CALENDARS Users' Library Solutions. The astronomical routines include calculation of times of sunrise, transit and sunset, moon phases, and seasons.
By Marco J. de Vries. 2004/05/26

XTime49 2.1   (details) 49/50 ENG   296KB/17KB
ScreenshotCalendar time and astronomical routines for the HP 49G(+). Part of these routines are ported from the invaluable HP-41C CALENDARS Users' Library Solutions. The astronomical routines include calculation of times of sunrise, transit and sunset, moon phases, and seasons. Version 2 is more user friendly than version 1.1 in that INFORM and INPUT forms and a CHOOSE box have been written for the most important conversions. In version 2.1 user input is further improved. The separate subroutines have been maintained for those who want to use them for their own calculations.
By Marco J. de Vries. 2004/07/05

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