Surya Siddhanta
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ततो ग्राहकखण्डेन प्राग्वन् मण्डलम् आलिखेत् । तद्ग्राह्यमण्डलयुतिर् यत्र तत्र निमीलनम्॥
From that point, with a radius equal to half the eclipsing body, draw a circle, as in the former case : where this meets the circle of the eclipsed body, there immersion takes place.
english translation
tato grAhakakhaNDena prAgvan maNDalam Alikhet । tadgrAhyamaNDalayutir yatra tatra nimIlanam॥
hk transliteration by Sanscriptएवम् उन्मीलने मोक्षदिङ्मुखीम् सम्प्रसारयेत् । विलिखेन् मण्डलम् प्राग्वद् उन्मीलनम् अथोक्तवत्॥
So also for the emergence (unmilana), lay it off in the direction of separation, and describe a circle, as before : it will show the point of emergence in the manner explained. [The method of those processes is so clear as to call for no detailed explanation. The centre of the eclipsing body being supposed to be always in the are, W'V . drawn as directed in the last passage, we have only to fix a point in this arc which shall be at a distance from M corresponding to the calculated distance of the centres at the given time, and from that point to describe a circle of the dimensions of the eclipsed body, and the result will be a representation of the then phase of the eclipse. If the point thus fixed be distant from M by the difference of the two semidiameters, as Mi', Me', the circles described will touch the disk of the eclipsed body at the points of immersion and emergence, i and e.]
english translation
evam unmIlane mokSadiGmukhIm samprasArayet । vilikhen maNDalam prAgvad unmIlanam athoktavat॥
hk transliteration by Sanscriptअर्धाद् ऊने सधूम्रम् स्यात् कृष्णम् अर्धाधिकम् भवेत् । विमुञ्चतः कृष्णताम्रम् कपिलम् सकलग्रहे॥
The pjvt obscured, when less than half, will be dusky (sadhumra) ; when more than half, it will be black ; when emerging, it is dark copper-color (krshrtntamra) ; when the obscuration is total, it is tawny (hapila). [The commentary adds the important circumstance, omitted in the text, that the moon alone is here spoken of; no specification being added with reference to the sun, because, in a solar eclipse, the part obscured is always black. A more suitable place might have been found for this verse in the fourth chapter, as it has nothing to do with the projection of an eclipse.]
english translation
ardhAd Une sadhUmram syAt kRSNam ardhAdhikam bhavet । vimuJcataH kRSNatAmram kapilam sakalagrahe॥
hk transliteration by Sanscriptरहस्यम् एतद् देवानाम् न देयम् यस्य कस्यचित् । सुपरीक्षितशिष्याय देयम् वत्सरवासिने॥
This mystery of the gods is not to be imparted indiscriminately : it is to be made known to the well-tried pupil, who remains a year under instruction. [The commentary understands by this mystery, which is to be kept wjth so jealous care, the knowledge of the subject of this chapter, the deli- neation of an eclipse, and not the general subject of eclipses, as treated in the past three chapters. It seems a little curious to find a matter of so subordinate consequence heralded so pompously in the first verse of the chapter, and guarded so cautiously at its close.]
english translation
rahasyam etad devAnAm na deyam yasya kasyacit । suparIkSitaziSyAya deyam vatsaravAsine॥
hk transliteration by Sanscript