Anton Grigoryev's Blog

Primary Directions: the story of calculations (vol. 4)

Anton Grigoryev — Fri, 11 Dec 2009 08:52:57 +0000

In this episode of the serial I'm going to consider medieval directions. Or to be more precise, I begin to consider medieval directions. The mainstream of medieval primary directions is based on Ptolemy. In fact, it is nothing but the variant of calculations described by Ptolemy in Tetrabiblos. Let's consider this medieval algorithm as it is described by Alcabitius... No related posts.

Another New Tool

Anton Grigoryev — Mon, 05 Oct 2009 20:49:58 +0000

Often we would like to restore data from a chart or coordinates of planets and houses in ancient texts. To make this task more easy, I have made a new tool that allows to restore geographic latitude of a chart from ecliptic longitudes of Mid-Heaven and Ascendant. Hope it helps :D Related posts:

The Sage Wine Cold days have come. The external cold cools heat of...
Happy New Year! (once again) The Sun entered is Aries in March, 20th, and the...

Cardano’s First Segment

Anton Grigoryev — Thu, 24 Sep 2009 16:39:00 +0000

We upload one of the seven chapters of Cardano's Seven Segments with commentaries for open internet access as a free pdf-file. The book is still not finished, although we are getting close to that; probably some more months are needed - the main problem is the work load that leaves too little time to focus on the book, unfortunately. We decided that readers should know what they can expect from the entire book. We hope the book will be finished soon. Anton Grigoriev & Valerie Livina Related posts:

Walking About Moscow Being in Moscow a week ago, in addition to meeting...

A New Tool

Anton Grigoryev — Tue, 30 Jun 2009 16:14:56 +0000

The new possibilities of astrological calculations. Calculate Regiomontanian pole online. No related posts.

Walking About Moscow

Anton Grigoryev — Sun, 14 Jun 2009 12:35:47 +0000

Being in Moscow a week ago, in addition to meeting my friends, lecture delivering, meeting members of our international astrological web forum, I had an opportunity to take a walk inside of the Kremlin and to admire its churches. There is a fresco in a wall of one cathedral, the Cathedral of the Dormition, that attracted my special attention. It is an image of Sophia, the God's Wisdom. Related posts:

Happy New Year! (once again) The Sun entered is Aries in March, 20th, and the...

Abenragel On Many Questions At Once

Anton Grigoryev — Sat, 16 May 2009 17:16:31 +0000

Often a querent asks several questions at once. There are interesting rules for such cases in a book of Abenragel, the astrologer of X-XI cc. Is there any modern astrologer, who uses these rules in practice? ;-) I havn't been tried them, actually. But after unexpectedly good results with the rules about querent's thoughts I will try these as well :D No related posts.

Abenragel On the Querent’s Thoughts

Anton Grigoryev — Wed, 15 Apr 2009 09:06:07 +0000

The fragment from Abenragel (Abû l-Hasan 'Alî ibn Abî l-Rijâl), the court astrologer to the Tunisian prince al-Mu'izz ibn Bâdis, on how to find querent's thoughts with horary astrology: No related posts.

Happy New Year! (once again)

Anton Grigoryev — Mon, 23 Mar 2009 21:10:05 +0000

The Sun entered is Aries in March, 20th, and the dawn of March 21st opened the new year. This day is an ancient Persian feast of the New Year called Nowruz. Nowadays, Nowruz is the traditional feast in several countries including post-Soviet republics of the Central Asia, and it is a feast in my family as well. My wife spent few years of her childhood in Tajikistan, where this feast is celebrated all through the ages. From the other hand, Russian astrologers celebrate a vernal equinox as the Astrologer's Day. We have doubled reason to celebrate this day thereby :D One of the traditional dishes of this feast in practically all countries is a round flat cake... Related posts:

The Sage Wine Cold days have come. The external cold cools heat of...
Walking About Moscow Being in Moscow a week ago, in addition to meeting...

The Time Of Venus

Anton Grigoryev — Thu, 12 Mar 2009 21:34:16 +0000

From time to time we find there are many things besides astrology in our life. From time to time we find that everything in our life is astrology. It's all very well :) Sometimes you can meet a maniac and find it is a good chance to observe the effects of atra bilis or overheated melancholy ;) Last weekend we opened an exhibition of my wife's paintings in the State Art Museum in Kremlin. This event had a strong scent of Venus - the aesthetic feast with paintings, chamber music and buffet tables. This prompted me pay my attention to Venus in a period of the exhibition. And I found a pretty curious condition of Venus in this period... Related posts:

Happy New Year! (once again) The Sun entered is Aries in March, 20th, and the...
Walking About Moscow Being in Moscow a week ago, in addition to meeting...

Comet Lulin

Anton Grigoryev — Sat, 21 Feb 2009 07:36:47 +0000

Comet C/2007 N3 (Lulin), discovered in July 2007, is going to its closest approach. It will pass the opposition to the Sun at this period, and will have the greatest magnitude. The comet is predicted to be 5th magnitude, which means it could be visible to the naked eye. Though celestial bodies of 5th magnitude are visible to the naked eye, it will be not so easy task to see the comet in the sky. IT will be visible only in rural locations without a light pollution. We can try to see this comet at 24th-26th of February, at night. IT will have only 5th magnitude, therefore it can be visible only after the end of astronomical twilight, i.e. when the Sun after a sunset reaches altitude of 18 degrees under the horizon. At this time we can try to find the comet somewhere between East and South-East. I think the good reference points can be Saturn and Regulus. If you will be lucky and discover the first appearance of the commet in the sky, you can erect the chart and make a prediction. But what if we are not so lucky? Fortunately, The astrological tradition allows to say something about a comet even if we don't know the moment of its first appearence. No related posts.