पञ्चसिद्धान्तिका (आचार्य वराहमिहिर - सूर्य, रोमक, पौलिश, वासिष्ठ एवं पितामह सिद्धान्त)

VI.10 VI. VĀS.-PAUL. SIDDHĀNTA – LUNAR ECLIPSE 165 The directions are changed accordingly. (For illustration see fig. 7, below given under example 3). All this has been explained in chap. V. The Siddhānta takes it that the bending is proportionate to the latitude, being zero at the equator and 90° at the pole. So, in terms of the length of the circumference, the bending = (latitude/90°) × circumference/4. But this amount of bending is only at the horizon. On the meridian there is no bending. In between, the Siddhānta takes it as proportionate to the angle of the Moon from the meridian. Thus, Bending = (latitude/90°) × (circumference/4) × (degrees of the Moon from the meridian/90°) = quarter circumference × latitude × degrees of the Moon from the meridian/8100, as given. As for the Moon being "devoured", it is a figurative expression, the Shadow being identified with the demon, Rāhu, in the Purāṇas. In saying that Moon ~ Rāhu should be done once for finding the point of first contact, and again for the last contact, the author recognises that the difference may be considerable, and thereby indicates that it will be good if the times also are computed separately, using the different latitudes. But TS and NP by their emendation, pragrahamokṣe, have shut out all this suggestion. TS do not seem to understand why the division into thirteen parts is instructed to be made, for Dr. Thibaut says, "We do not know the reason for the direction, given in stanza 7, to divide each quarter of the circumference into thirteen parts." (p.45). It is not each quarter, and it is not the quarter-circumference that is to be equally divided. We have emended grahaṇāsvāṃśe into grahaṇāśāṃśe, whereby we understand that the point of contact is at the point where the parallel line corresponding to Moon ~ Rāhu meets the circumference. The emendation grahaṇāśā 'tad' vadet by NP is not warranted. In the matter of the directions of Ākṣavalana, Thibaut says the opposite of what Sudhakara Dvivedi says, and neither gives the cor- rect direction. (vide. Com. and Translation) [ग्रहणकालः वर्णं च] [तिथ्यन्ते ग्रहमध्यं प्राक् परतः स्थितिदलेन चाऽऽद्यन्तौ । रक्तकपिलौ च वर्णावुच्चाऽधस्स्थे परे नितराम् || ८A ||] सर्वग्रासिन्येवं वर्णविशेषं वदेन्निशानाथे । उदयास्तमये धूम्रं खण्डग्रहणे (सलिलदाभम्) || ९ || राहुमुखोनं चक्रं [धीद्वियम] गुणं शशाङ्कसंयुक्तम् । (जूकेत्थगेऽयमुच्चः) क्रियादिकन्यान्त (गे) नीचः || १० || Moment of the eclipse and its colour 8A-9. The middle of the eclipse is at the moment of new moon. The times of first and last contacts are earlier and later than the middle, by half the time of duration. When the eclipse is total, the colour of the Moon is red or brown as it is farthest or nearest to the earth, respectively, and mixed, more or less, in between. When the eclipse is near sunset or sunrise, the Moon is smoky in colour. When the eclipse is partial, the Moon has the colour of raincloud.