Arena, since you're looking for a different vision of houses etc. in polar regions, I wanted to direct your attention to the Horizontal house system. It has some interesting theoretical considerations. (This isn't an endorsement of the system, just a jabbering discussion.)

As you know, I'm averse to the idea that a whole different way of framing the mundane picture of a chart would change as one moves around the globe. What I find intellectually engaging is that the Campanus and Horizontal systems are essentially two parts of one larger system. My intellectual objections could be overcome by the idea that there is a larger framework that is the persisting "single system," but, like a jewel examined from different sides, it sometimes emphasizes one framework and sometimes another.

Here are descriptions of each, and of the larger framework. I think you understand the terms Meridian, Horizon, and Prime Vertical, but, just in case you don't (or somebody reading this doesn't), I'll review simply. These three great circles are all mutually perpendicular: each is at right angles to the other two. Visualize as I describe briefly:

(1) Find the point directly over your head, the Zenith, and also make sure you know where north, south, east, and west are.

(2) Imagine a circle that passes right over your head and beneath your feet, and crosses the horizon due north and south. This is the Meridian. (Where the ecliptic crosses it are the MC or IC.)

(3) Imagine the horizon itself, not as the visible horizon but as a great circle running through due east, due south, due west, due north. This would be the "equator" of the sphere that has Zenith (straight up) and Nadir (straight down) as its poles. It is at right angles to the Meridian you just identified. (Where the ecliptic crosses this circle are Ascendant and Descendant.)

(3) Now add a third circle, at right angles to both of them: It rises due east, passes over head, sets due west, and passes under your feet. This is the Prime Vertical. (Where the ecliptic crosses this are the Vertex and Antivertex.)

The CAMPANUS HOUSE SYSTEM divides the Prime Vertical into equal parts. Notice that the PV is already divided into even quarters (each exactly 90°) by the Horizon and Meridian. Each of these quadrants of the PV is divided into thirds. Great circles are drawn through the north and south points of the Horizon (where the Horizon and Meridian, the other two circles, intersect) through these division points to divide the whole sphere into 12 even "orange slices," which are the three-dimensional Campanus houses. Where these dividing great circles cross the ecliptic are the house cusps.

Similar but different, the HORIZONTAL HOUSE SYSTEM divides the Horizon into equal parts. Notice that the Horizon is already divided into even quarters (each exactly 90°) by the north-south Meridian and the east-west Prime Vertical. Each of these quadrants of the Horizon is divided into thirds. Great circles are drawn through the zenith and nadir (where the Meridian and Prime Vertical, the other two circles, intersect) through these division points to divide the whole sphere into 12 even "orange slices," which are the three-dimensional Horizontal houses. Where these dividing great circles cross the ecliptic are the house cusps.

*(Extra geeky optional paragraph:)*A third system - not yet identified or put into use by anyone - is theoretically possible from the final combination of these three great circles. Let's call it the XYZ HOUSE SYSTEM. It would divide the Meridian into equal parts. Notice that the Meridian is already divided into even quarters (each exactly 90°) by the Horizon and Prime Vertical. Each of these quadrants of the Meridian would be divided into thirds. Great circles would be drawn through the east and west points of the horizon (where the Horizon and Prime Vertical, the other two circles, intersect) through these division points to divide the whole sphere into 12 even "orange slices," which are the three-dimensional XYZ houses. Where these dividing great circles cross the ecliptic would be the house cusps. (This one is freaky! he 1st/7th cusp would be the Ascendant-Descendant, the 4th/10th cusp would be the Vertex-Antivertex.)

Anyway... See how Campanus (or the Prime Vertical System) is part of a larger framework that also contains the Horizontal System. The horizontal chart line in the Prime Vertical system (Campanus) is the intersection of the ecliptic and Horizon,

*i.e.,*the Ascendant-Descendant. Complementing this, the horizontal line of the Horizon system (Horizontal) is the intersection of the ecliptic and Prime Vertical,

*i.e.,*the Antivertex-Vertex.

The Horizontal system behaves near the poles as Campanus behaves near the equator, and vice versa.

Solar Fire, doesn't include the Horizontal system, but it's easy to calculate. In calculating your chart, replace your birth latitude with the

*negative co-latitude.*That is, subtract your birth latitude from 90° and flip the north-south. For example, Arena was born at 66N04. Subtract 66°04' from 90° to get 23°56', and switch it from north to south: Calculate her natal exactly as usual

*except*for 23S56 latitude. (You may have to remove the city name in SF for it to accept the change.)

Arena, take a lok... I think you'll like it. BTW, the "Vertex" in this chart is your actual Descendant, so you can have all the angles available at one.

You can use the Z-Analogue Prime Vertical longitude option to create a mundoscope for this (it will just be azimuth). Whether that is of any real use is another matter... I would have to speculate. - IN FACT, if you use your normal birth chart (don't flip the latitude) and calculate Z-Analogue Azi (an analogue azimuth chart), you get exactly the same thing! - that's how interconnected the two are.

Furthermore, this azimuth chart is called, by some astrologers, a Local Space chart. When I was working Neil Michelsen in the early 1980s, he was experimenting a great deal with Local Space charts, and I backed him in a presentation at a convention once. I can't say I did enough with it to substantiate the system, but there are some fascinating results. It might be that the Local Space (azimuth) is a viable way of looking at the chart on its own merits.

What's cool, though, to my thinking, is that it's arguably the

*same*system as Campanus. Possibly two or three

*perspectives*arise out of the same three-circle framework.