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