सिद्धान्तशिरोमणि: गणिताध्याय (भास्कराचार्य - ग्रहगणित, मध्यमाधिकार व स्पष्टाधिकार सटीक)

397 Fig. 88 Comm. Let M₁, M₂, M₃ be the positions of the centre of the Moon's disc at the moment of first contact, at the middle of the eclipse and the moment of last contact respectively. Draw a circle with radius M₁ R₁ = r+p which is called the Manaikyārdha Vritta. Let M₁ E₁ represent the Eastern direction known as the Sama- mandalaprāchī. Draw E₁ V₁ equal to Hsine of the Valana, so that M₁ V₁ is the Krānti-Vritta-prāchī ie. the point of intersection of the Ecliptic with the Eastern horizon. Draw N₁ R₁ perpendicular to M₁ V₁ in the form of Hsine, which is the latitude (Vikṣepa) of the Moon at the moment of first contact. With R₁ as centre draw the Grāhaka- Vritta with p as centre ; this circle represents the Rāhu- Bimba. Similarly let M₃ be the centre of the Moon's disc at the moment of last contact. Draw a circle with M₃ as centre and r+p as the radius which is the Manaikyārdha- Vritta. Let M₃ W₃ be the direction to the West, the Samamandalapratichī. From W₃ draw W₃ V₃ the Hsine of the Valana, so that M₃ V₃ is now the Krāntimandala- pratīchī ie. the point of intersection of ecliptic with the western horizon. Let, the Vikṣepa N₃ R₃ be drawn as a Hsine of the Mānaikyārdha Vritta. With R₃ as centre and radius p, draw the Rāhu-Bimba. Let M₂ be the centre of the Moon's disc at the middle of the eclipse. Let M₂ S₂ represent the South with respect to the prime-vertical. From S₂, draw the Hsine of the Valana S₂ V₂ so that M₂ V₂ is the Krānti-Vritta-Dakshiṇā ie. the South with respect to the Ecliptic. Now the