ZenithI S ’

PH 222 113

sin c__ = P2sin 0

(4.3)

114 PH 222

(4.4)

zM

,

X Y

E - -

X l v Y

I r/lQ;r

0 EARTH’S SURFACE !

PH 222 115

PH 222 1 1 9

120 PH 222

Z

S

PH 222 1 2 1

X’Y = (H-H’) sin (90° -6’)

X ’ Y = (H-H’)cos6’ (4.19)

fll”$+d 4.5, XY = 6’ -6 (‘: P h&Il0~‘Nfl~lJ6&l X’Y MEMldMod’ BAWT)

fllfI~Pl3JtN~ldlltf (i%J"d 4.7), R = Ktan[ IlVlUn'l R = XX’ Og!n” XX’ =

Ktanc

UWi7~U"75~ (4.16),(4.17),(4.18),(4.19) MWil XY = 6' -6 dWflJfllWJ~Z%

H - H ’ = KtanI;secd’sinq (4.20)

6-6' = -Ktan[cosq (4.21)

6’ = 6+58!‘16tanccosty (4.22)

dl 4 "n~~IJflZtle\hV4l.i~ PXZ (Parallactic angle, ~5IUnzlSUFll+oJ Parallactic angle

%uunw” 5)

fil r] iJn7u75"n',uaarr~~;o7"~~~~~~~~~~~"~~ PX’Z rm~IGfj~5lflwrJ I”“,d

PZ = 90”-@, PX’ = 90”-6’ Lb% ZX’ = c

cos PZ = cos PX’ cos ZX’ +sin PX’ sin ZX’ cos Pjz’Z

WlUfilY~

cos (90' - @) = cos(90" -6’) cos [ + sin(90” - 6’) sin [ cos Pjz’Z

sin @ = sin 6’ cos c-tcos 6’ sin [ cos r]

cos Pji’Z = sin@-sind’cosccosd’sin[

122 PH 222

yll P.X’Z = cos- , (sin@-sind’cos[)cosd’sinc

. . =. rlcos-~ sin @ - sin 6 ’ cos z

(rcos 6’ sin?! -)(4.23)

a’ = a+3?3lltan(*

(4.24)

(4.25)

PH 222 123

W"ffU"1d (4.23), WlWilW~n"

11 =

=

O,"Ml75d (4.22)

6' =

cos-’ sin 52” -sin 45P9889 cos 9F9072cos 45F9889 sin 9F9072 >

48”2951

6 + 581’16 tan [ cos q

MlUfil 6 =45"9889,c = 909044, r] = 48"2951 El~hfilJflWJU?i

6' = 45P9889+58!'16tan9P9044~0~48F'2951

= 45:9889+6:76

= 45P9889+0?0019

= 45"9908

= 45" 59'27"

W"fYlJ"lTw" (4.25)

a’ = a+3?377tan[ sincos 6’

6tVlUn'l a = 5q 12" 32", [ = 9Y9044, q = 48F2951 WI~UHlJfllXlJIJ!~

a’ = 5’ 12’ 32’f 3?377 tan 909044 sin 4802951cos 45"9908

Blml

124

= 5' 12" 32=+0?727

= 5512"331

PH 222