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

: 509 Karma vanishes. It must be noted here that when the longitude is 0° or 180° Āyanavalana is maximum but Āyana-Dṛk-Karma vanishes. There is no ambignity here in this polar longitude because Bhāskara is unequivocal in defining this. But under verse (3) Grahacchāyādhikāra, Bhāskara means by Sphuṭaśara SL and not SM but by Sphuṭaśara here he means SM. It is ridiculous to suppose that Bhāskara did not know that B √(R²—Āyanavalana is less than β. This B √(R²—a²)/R (a=Āyanavalanajyā) he defined as Sphuṭaśara there under verse (3) cited. SR is defined by him as Asphuṭaśara or simply Śara. Now here in the commentary he makes us believe that Sphuṭaśara is SM which is the polar latitude. This confusion created by Bhāskara leads Ramaswarup the editor of Brahmagupta Siddhānta as well as one Mukhopadhyaya the author of the thesis, ‘Hindu Nakshatras’ to suppose that Bhāskara was wrong in supposing that (B/R) √(R²—a²) > β. Bhāskara could not evidently commit such a silly mistake but we must infer that in that context he called SL as the Sphuṭaśara which being added to Rn the Krānti or what is the same LN gives SN the Sphuṭakrānti or the modern declination. Rn is called by him as Asphuṭakrānti. In this context he calls SM as the Sphuṭaśara since it is Dhruvābhimukha ie. directed towards the pole. Of course, Bhāskara should not have called both SL and SM as Sphuṭaśaras but since he was deliberately defining the Sphuṭaśara as SL previously and now as SM, and since he could not commit such a glaring mistake as to construe (B/R) √(R²—a²) as greater than β, we should not rush to pronounce that Bhāskara was wrong. Only we could say that he is inconsistent to that extent. Verse 7. The polar longitudes of Agastya (Canopus) is 87° and his polar latitude is 77 south. The polar