The Astrocartography features described below are not available in the Lite or Pro versions of ZET.
A geographical map of the Earth is always accessible in ZET as a multi-purpose
tableau. It is used for astrocartography and cyclocartography, to display eclipse paths,
and to obtain location coordinates for a birth or other event whose location is not
available from the Atlas gazetteer.
The Geographical Map tableau is displayed by:
- clicking the "Geographical Map" Toolbar button, or
- selecting "Tableau" | "Map" from the main menu, or
- clicking the "Find on Geographical Map" button
in the Atlas (gazetteer) window.
Apart from the basic depiction of land and sea,
the map can display:
- cities, with size marking conformant to city
size and the map scaling,
- city names, with the font size of legends intelligently related
to city size and the map scale factor,
- the current geographical location(s), i.e. of the Event Data,
- a variety of astrocartographic information,
- country and region borders,
- night regions, etc.
If you have ZET Geo a scaled topographical (relief) map of the world is available
to you. Here is a fragment of this map at a scale of 1 pixel/kilometer:
Tooltip information is available for map features.
The ZET main window title bar displays details of the current event data.
The Status bar at the bottom of the window shows
the longitude and latitude at the mouse pointer, and the map
scale factor current in use.
To pick coordinates for birth or event
data, zoom in on the region of interest (see the section below), position the mouse pointer, and
click the right mouse button. From the popup menu select "Utilize
Coordinates". Note: if you pick coordinates from an empty region (i.e. not from
a city location), this operation does not change the time zone in effect.
To animate the tableau use the
Dynamics of Time and
Dynamics of Location control panels.
These are useful primarily for astrocartographical research.
The following tools are available at the right
of the Toolbar:
- "Drag" tool - click the Toolbar icon to select, then
click and drag with the mouse in the tableau while holding down the
- "Marquee Zoom" tool - click the Toolbar icon to
select, then click in the tableau and drag the mouse while
holding down the mouse button to open an elastic rectangular frame on the
tableau. When you release the mouse button the map is zoomed to
the framed area. (You can set the color of the marquee rectangle on the
Color tab of the Geographical Map Settings window),
- "Measure" tool - click the Toolbar icon to select,
then click in the tableau to set an origin and drag with the mouse.
An elastic line is drawn between the origin and the
mouse pointer, and the distance between them is displayed on
the Status bar (the distance on a spherical Earth and, in brackets, its longitudinal
and latitudinal components).
It is also possible to measure distances as off a paper map (in millimeters): see
Map Settings, Misc. tab.
- "Zoom In (PgUp)", "Zoom Out (PgDn)" buttons and zoom indicator - click the upper (bullet) button to
zoom in, and the lower (point) button to zoom out. Zooming
the map does not deselect the current map tool.
Zooming can also be performed
using the arrow cursor keys on the keyboard. (You can set
the properties of the zoom buttons on the Grid tab of the Geographical
Map Settings window),
The 'current location' markers indicated by the red spot
(core data) or the blue spot (background data) can be repositioned
(with Drag, Marquee Zoom, and Measure tools unselected):
click on a marker with the mouse and drag it to its new position
while holding down the mouse button.
The map is capable of 12 zoom levels. These are designated
from Scale 32 - 1"/pix (highest magnification = one arc-second per screen pixel)
thru Scale 1/64 - 32'/pix (lowest magnification = 32 arc-minutes per screen pixel).
The magnification doubles (or halves) at each zoom step.
The current map scale factor appears on the Status bar.
Here is an example of a
zoomed (Scale 8 - 4"/pix) map fragment:
The display of city names is adjusted
automatically at each zoom level. The quantity and the style of map
legends displayed is adjustable on the Misc. tab of the Geographical Map
Introduction to Astrocartography
One method of astrocartography calculates
points on the Earth at which the planets of the horoscope chart
appear conjoined with the chart's angles (i.e. Asc, MC, Desc, IC).
Let's consider what this means.
the prime vertical, the locations on the Earth at which 'Sun on MC',
'Mercury on IC', etc will be true (i.e. where these planets appear
conjoined with the meridian)
will comprise vertical lines on a standard (Mercator) map projection of the
Earth's surface - since they connect places of equal longitude. Less
evidently, if we draw lines connecting the places in which planets are in major
aspect to the Asc-Desc axis, then we will arrive at sinusoids. By mathematical interpolation we
can derive loci for the intermediate cusps and houses.
From the astrological point of view, we are especially interested in
geographical points - and by extension, the latitude - at which
two natal planets are simultaneously
conjoined with the angles of the horoscope chart. The map depicts
these as the intersection of two projection lines. These points of intersection are the
and their astrological interpretation is broadly as follows: if you
want success, relocate to a place where Jupiter is at MC. If you
want to get married, move to where your natal Venus is on the
Descendant, and so on. (See the above graphic for an example of
these astrolocality lines).
There are two variations on this technique of
astrocartographical projection. The first is concerned with lines covering places
at which a planet of interest is precisely
on the Ascendant, i.e. where, as seen from the Earth, the planet
has the ecliptical longitude of the Ascendant (and similarly, lines involving
aspects of the planets and the
Descendant, MC and IC). In the second, places on
the globe are considered of interest at which the planet
crosses the horizon (and similarly, the
celestial meridian and prime vertical).
While broadly similar, these variant techniques produce somewhat different
results when a planet 'has latitude', i.e. its orbit has taken it away from the plane
of the ecliptic. ZET caters for both these variants of
- Lines marking places on the Earth where the
Sun, Moon and planets are at the zenith,
- Images of the astrological houses - lines of
projection of the great circles of houses onto the surface of the Earth
(for more about the circles of houses, see the
- Lines marking places on the Earth where
planets form aspects to angular house cusps, indicating places where, at
the given moment, those aspect are operating particularly strongly.
Astrological relocation is based on choosing places which, in relation
to the planets in the horoscope, favourably satisfy a given criterion.
While times of birth are fixed and unalterable,
locations can be chosen in relation to a birth
chart that are advantageous to some goal,
- Symbolic projections of cities onto the
ecliptic - the geographical coordinates of cities are treated as equatorial
coordinates (Right Ascension and declination), and then transformed into
ecliptical coordinates. The resulting symbolic projection of the city
can be considered as another heavenly object in a natal (or transit,
etc) chart, which can participate in aspects and other astrological
- Projections of celestial bodies onto the
geographical map (stars, planets, asteroids) - points can be derived
indicating places in which planets, asteroids and stars are on the
zenith at the time of interest (real horizontal projection),
- Symbolic projection of stars - stars can be considered as having a symbolic equatorial
projection, in which their celestial equatorial coordinates
are made conformant with geographical coordinates, and the resulting point
considered as a projection of the object onto the Earth. This
allows the astrological influence of stellar objects on terrestrial
regions to be analysed. (This is the inverse of the symbolic projection of a city
onto the ecliptic),
- Symbolic projection of planets - lines of projection of celestial
objects for points considered to have the same zodiacal longitude as a given object
(but different zodiacal latitude), a symbolic equatorial projection of these points
onto the Earth then being derived. These lines are interpreted as zones of
influence of the object(s) in the region. You can choose any set of planets and
one star for this,
- Local Space - lines of geographical azimuth
bearings derived from the positions of the planets,
- The facility to creates astrocartograms
not only for planets, but also for any asteroid, virtual object, or
- Selection of any subset of the 10 planets and
other objects of interest,
- Selection of any pair of angular houses, or
all of them,
- The option to displaying either conjunctions
only, or all the major aspects.
Local Space Astrology
In the Local Space Astrology method of astrocartography, the celestial
coordinates of planets are translated into a system of horizontal coordinates
(i.e. bearings) at a given location.
While Local Space projections can be depicted on the Geographical Map,
the Local Space chart can also be displayed on the Chart tableau. It contains a compass
rose to remind you that bearings are being represented:
To erect a Local Space chart, the following settings are required:
- Chart Settings - Format, East of Wheel, Degree: 180
- Chart Settings - Zodiac, Coordinate System: Horizontal
- Chart Settings - Wheel, "Compass": selected.
The popup menu
Click the right mouse button in the tableau for
a popup menu of options:
- Geographical Map Settings... -
opens the Geographical
Map Settings window,
- Astro*Carto*Graphy Settings... - opens the
A*C*G Settings window,
- Geographical Atlas... - opens the Atlas
window of city names and coordinates, e.g. to pinpoint a
particular city on the map,
- Utilize Coordinates - transfers the
coordinates of the location under the mouse pointer to the Event Data (or
Your Location) window.
The local event (birth) time is not changed.
NOTE: if a city is selected
when you invoke the popup menu, the time zone and name of the time zone table
in the Event Data window is
also transferred; otherwise the time zone is not changed and
time zone table name field is cleared,
- Use Place for Relocation - utilizes the Relocation technique, changes the birth
location data; the Universal (GMT) birth time is not changed.
- Relocation Reading - displays a window with the interpretation text (if available)
for Relocation to the selected point,
- Parans List: [city] - displays the list of parans for the latitude of the city indicated
(pointed to by the mouse) according to an orb. The list includes the parans of stars,
- Select Star: [star] - this and the next menu item are enabled
if the mouse pointer is positioned on the projection of a star on the map.
This option retrieves the name and designation of the star into the
A*C*G Settings dialog.
- Star Interpretation: [star]
- displays an astrological reading (interpretation) of the specified star
- Save Placemark - saves the current map state (position and scale) as a Placemark,
- Goto Placemark - restores a Placemark from the submenu list, i.e. resets
the map to a previously saved state,
- Local Time Clock - creates a floating panel with the local time for the city pointed
to by the mouse. The local time is updated in real-time. You may create several clocks, and
they are saved on exit from ZET and will be restored when ZET is restarted.
You move a clock by dragging it with the mouse, and close it by right-clicking.