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

X CONTENTS
Page Page
Astronomer's qualifications (36-37) 112 True Sun (1-3) 181
Gnomonic shadow and the prime True Moon (4-6) 183
vertical (38) 113 Daily motion of the Sun and the Moon (7) 185
Agrā : Sine amplitude (39) 113 Rāhu (8) 186
Latitude from Agrā (40) 114 Parallax in longitude (9) 187
Shadow at desired time (41-44) 115 Declination of the Nonagesimal (10-12) 187
Time after sunrise (45-47) 118 Parallax correction and orbital
Time for Sunset (48) 121 diameter (13-14) 189
Shadow from time (49) 122 True diameter of the orbs (15) 191
Moon's shadow (50-51) 123 Moment of the eclipse (16) 192
Directions from shadow (52-54) 126 Eclipse diagram (17-18) 192
Sun from shadow (55-56) 132
Ch.V. PAULIŚA-SIDDHĀNTA : Ch.IX. SAURA-SIDDHĀNTA :
MOON'S CUSPS SOLAR ECLIPSE
Introductory 137 Introductory 197
Time of Moon's visibility (1-3) 137 Mean Sun (1) 197
Diagram of the Moon's cusps (4-7) 143 Mean Moon (2-4) 198
Daily rising and setting of the Rāhu : Maximum latitude (5-6) 201
Moon (8-10) 147 True Sun and Moon (7-9) 203
Epicyclic theory 206
Ch.VI. (VĀSIṢṬHA-) PAULIŚA- Bhujāntara correction 209
SIDDHĀNTA : LUNAR ECLIPSE Udayāntara correction 209
Introductory 152 Deśāntara correction (10) 209
Sun and Moon of equal longitude (1) 152 Mean motion of the Sun and the Moon (11) 210
Probability of an eclipse (2) 154 Motion of Moon's anomaly (12) 211
Duration of the eclipse (3-4) 156 True motion of Sun and Moon (13-14) 211
Total obscuration (5) 160 Kakṣā of the Sun and the Moon (15) 214
Direction of the eclipse (6-8) 162 Measure of the orbs (16) 215
Moment of the eclipse and its Sin Zenith Distance of Meridian
colour (8-10) 165 point (17-18) 216
Diagrammatic representation (11-13) 168 Dṛkṣepa of the Sun (19-20) 219
Lunar and Solar eclipses – Gnomon (21) 220
Differences (14) 171 Parallax-corrected New Moon (22-23) 221
Parallax in latitude (24-25) 223
Ch.VII. (PAULIŚA-SIDDHĀNTA) : Duration of the eclipse (26-27) 225
SOLAR ECLIPSE
Introductory 172 Ch.X. SAURA-SIDDHĀNTA :
Parallax of longitude (1) 172 LUNAR ECLIPSE
Parallax in latitude (2-4) 176
Eclipse computation (5-6) 178 Introduction 228
Diameter of the Shadow (1-2a) 228
Ch.VIII. ROMAKA-SIDDHĀNTA : Duration of the Eclipse (2b-4) 230
SOLAR ECLIPSE Obscuration at any desired moment (5-6) 232
Introductory 181 Time of total obscuration (7) 235