Management of Measurement Constructs


Reviving a Predictive Tool – An Orientation

By Carolyn Egan

Carolyn Egan of Cranston, RI, an expert astrologer of long standing, is well known worldwide for her work and teaching in the mundane field of long-range weather forecasting. As well, she has focused specialist attention on the study of Declination, more specifically, a prediction tool called The Lifespan Graph. Articles and information on both topics can be found at the Egan website:

A new predictive tool on the astrological horizon is a graph!

Years ago, there was a popular trend to look at one’s biorhythms shown in graph form with wavy and straight lines. The graph that I am about to present to you has nothing to do with that view, even though it may look similar. Instead, the graph has everything to do with increasing the astrologer’s power of prediction. It is an easy tool to understand and the tool, the graph, provides a wealth of information that this astrologer hasn’t been exposed to since Noel Tyl revived and modernized Solar Arc Directions. As early as the 1970s, a few astrologers created the graph manually, but with recent advances from our most popular software companies, the graph is now readily available at the click of the mouse.


Let’s understand “Declination”, a simple, powerful measurement system already within our body of astrological knowledge. We all understand the frame of reference of the ecliptic and planets measured in longitude along the ecliptic, e.g., 10 Gemini, 14 Scorpio, etc. Another way to measure birth planets is to plot their positions by degrees in the sky either North or South of the Earth’s Equator (projected into the sky and known as the Celestial Equator). Just as you would find a grid on any earth map or globe, zero degrees is also known as the Equator.

The graph I am about to describe plots degree-of-Declination birth-lines across the paper as they fall either North or South of, or on the actual zero degree of the Equator. Another set of lines represents the birth lines in Secondary Progressed Declination Degrees. –Of course, you need to view an actual graph (not possible here). Many example graphs and text are found at along with two articles of additional information.

The graph can be created for any numbers of years. Just imagine this impact: the graph is a reference for your entire life captured on one piece of paper.

When a graph is presented to a client, the turning points are clearly outlined by date. Combine the turning points with the dates across the top of the graph and the client’s life events are revealed to the astrologer! A simply golden moment!! Of course, the client does not need to see the graph, but you will have the information that will raise their eyebrows by inches. “How did you know?” Magical words to the astrologer’s ears. A wealth of information is found in this view, in addition to the traditional horoscope wheel. You will wonder how you ever worked without it.


Graphs, in general, are not new to the study of astrology; however, the wizards of astrological computer software have provided us with the ability to create the graph in question: The Secondary Progressed Declination Lifespan Graph. They have been known as a ‘life diagram’ in some cosmology circles. In my own work, I have titled the graphs ‘Waves of the Future’. See the progressing Moon wend its way across the page simulating waves in the ocean and giving us a clear view of future events.

The graph is designed with a double set of lines. One set of (dashed) lines is stationary across the page and represents the natal planets in the birth degree of Declination. The second set of (solid) lines also represents Declination degrees but in a progressing secondary motion from birth to a selected date in the future. In other words, the view is of Secondary Progressions over the natal for a lifetime, but shown in Declination degrees.

At a glance, one can see planet parallels that may extend for years, planet returns to natal degrees, retrograde periods, and the very exciting situation of planets in positions that exceed the Sun’s normal 23026’ of maximum Declination. Planets that venture further than the Sun’s maximum degrees are labeled ‘out-of-bounds’ and usually manifest ‘beyond normal expectations’.

If you have been to the website, to view any of the example graphs, you might ask how the pile of spaghetti lines could possibly represent anything. Very simply, the fastest moving line on the graph is the progressed Moon line that reaches high and low turning points several times over a normal lifetime. The Moon line is a trigger to every line it touches. The Moon line consistently reaches one’s own personal North or South maximum Declination Degree that could range anywhere from 18 degrees to as far as almost 29 degrees North or South of the Equator. Keeping that range of degrees in mind should help you understand just how individual the graphs are to the person or event. Events you say! Yes, mundane work with the graphs is phenomenally impressive.

Think of the progressing lines of the planets as notes on a musical scale. The Sun line is straightforward and predictable in speed. The Moon progresses with everlasting cyclic consistency, never failing to trigger events through out life, displaying with great aplomb the lunar seasons personally designed for us by the nature of birth. The rest of the planets dance to their own music, weaving in and out of prominence, wandering across life's horizon and nether lands destined to meet or not to meet. For many, multi-note chords are produced when three or more planet lines intersect.

The graph is a broad view over a lifetime depicting valid turning points, peak experiences and event-oriented crossroads. The graph information supplements predictive information found in other familiar astrological techniques in longitude, such as transits, Solar Arc Directions and cosmology, to name a few. In my opinion, it overpowers the longitude view?

The study of Declination is vast, and at the same time, it is now simple, lucid, and meaningful because of the graph. Many novice/intermediate level astrologers may think the study of Declination is altogether too dry and without information to reward their efforts. –That is simply not so.


At UAC 2002 in Florida, several lectures, presentations and inclusion of the graph information for research dotted the conference like wildfires, persisting to take hold as the hottest topic of the day, creating a buzz among conference participants. I believe I am the first astrologer to discuss these graphs in several of the on-line groups. One astrologer studying weight-loss found her subjects to be the most susceptible to change when the progressing Moon was at the low point on the graph, at South maximum Declination.

Studying only one facet of Declination such as the graph is a good place to start a deeper study of Declination because the principles are easy to learn and it excites the mind. I have first-hand experience after teaching local classes of intermediate astrologers who had at least read about Declination and understood the terms parallel and contra parallel.

Do you remember learning how transits and solar arcs work in a natal chart? Were you impressed and pleased that you could create an astrological forecast? If you depend on transit work you will be more than satisfied with the information gems the graph holds.

The beauty of the graph work should motivate the astrologer enough to pursue a deeper study of Declination. The graphs represent the sweet dessert from the banquet of Declination study and offer easy entrance to the beauty and satisfaction of accurate astrological prediction. –Go further with this new study, this new tool:

Next Update: December 30, 2002


Contents copyright, 1999-2002 by Noel Tyl, all rights reserved.
Site design by Susanna Dorr.