MOONCLOCK  shareware by sofTouch APpLications
============================================

           sofTouch APpLications
           7742 E. Oakwood Circle
           Tucson, Arizona 85750  USA
           Telephone: 1-520-265-5296
           e-mail: gschneid@rtd.com

MOONCLOCK produces a continually updating, real-time graphical
representation on the visual aspect of the moon.  The lunar aspect
may be computed geocentrically, or topocentrically, for the
current epoch, or for any time and date.

MOONCLOCK will run on any Macintosh computer, or other platform 
running the Macintosh Operating System, or Macintosh Application
 Environment.  A native PowerPC version of MOONCLOCK, called 
MOONCLOCK PPC is available.  To start MOONCLOCK just double click 
on the MOONCLOCK icon.

The dynamic MOONCLOCK graphic depicts how the moon would appear
to the observer.  The light and dark shaded portions of the lunar
graphic represent the regions of lunar day and night.  The direction
from the Moon's center to celestial north is also indicated.  To the
tight of the lunar graphic the following information is presented:

  * The lunar elongation angle (measured eastward from the sun)
  * The position angle of the bright limb (measured eastward from
     celestial North to the mid-point of the bright limb)
  * The percentage of the lunar surface illuminated by sunlight
  * The current (or selected) Universal Time and Date
  * The geographic longitude at which the sidereal time is 0 hours
  * The observer's sidereal time

An instantaneous lunar ephemeris is presented in the bottom of the
MOONCLOCK window.  The header for the ephemeris indicates
whether positional computations were performed geocentrically or
topocentrically, and the epoch of the ephemeris as both Julian and
Gregorian dates.

The lunar Right Ascension, Declination, Heliocentric Latitude,
Heliocentric Longitude, apparent angular Equatorial Radius, and
Distance from the Earth is displayed.  The equatorial coordinates
of the moon are precessed to the equator and equinox of 2000.0. A.D.
The lunar distance is expressed in Earth radii.  The lunar angular 
radius is expressed in seconds of arc.

Please see the HELP item in the MOONCLOCK menu for more
information.

Try MOONCLOCK, and when you decide that this is a really essential
piece of shareware which you must keep, send $5.00 to sofTouch
APpLications.  Make checks payable to Glenn Schneider.  We at 
sofTouch APpLications appreciate the honesty, integrity and good 
faith of our shareware users.  Comments and suggestions regarding
our shareware products are always welcome.  Please distribute 
MOONCLOCK to anyone who may be interested in this product.  
sofTouch APpLications is pleased to serve and support all of our 
registered users.  Thank you for supporting the shareware concept.

MOONCLOCK provides a high precision lunar ephemeris, with an
accumulated error of less than 15-arc seconds per century from 
1990.0.  MOONCLOCK was developed using kernel software supplied
with HIPPARCHUS, a fully integrated Macintosh application for
positional and observational astronomy, from sofTouch
APpLications.

This software was developed using APL.68000, a proprietary product
of MicroAPL Ltd., which has given permission fro a runtime version
of APL.68000 to be included with the software.  Copyright and all
intellectual property rights in APL.68000 remain vested in MicroAPL
Ltd.  APL.68000 is a registered trademark of MicroAPL Ltd.

Visit our Web Site at: http://rtd.com/~gschneid/sofTouch.html
