Book 0 · Hand calculation school
Craft
Erect a complete paper natal chart through one permanent form, three constructed benches, immediate checking, and an honest receipt.
Resume
Begin at civil time
Your first checked line will establish a course record on this device.
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Nine reductions, one form
Begin with civil time. Finish by accounting for every residual.
- 01The clockTurn the recorded wall clock into Universal Time, then open the midnight plate on the correct Greenwich date.
- 02The sky's clockCarry the midnight Greenwich sidereal time to the birth instant and then to the birthplace.
- 03The two anglesInterpolate first between four-minute sidereal rows, then between the two latitude rows that bracket the birth.
- 04The other cuspsRepeat the angle interpolation down four cusp columns, make the one southern correction, and fill exact opposites.
- 05Sun and planetsSubtract adjacent midnight rows for daily motion, scale by the UT fraction of a day, and preserve the sign of travel.
- 06Moon and stationsUse the same transparent interpolation while naming where fast lunar curvature and a turning planet limit that straight line.
- 07The figurePut the Ascendant at the left, run the houses counterclockwise, and place each body between its bounding cusps.
- 08AspectsMeasure the shortest arc, admit only a Ptolemaic angle inside the published orb, and use daily motion for applying or separating.
- 09The receiptRead G1's complete account, then reduce B3 alone and name the cause of every residual without silently correcting the paper.