Visibility of Luna and Lunar Crescent

rd t mwh thidd fd !.d FlriFM@ dir.E. So n n DosibL thlr $e d6acrr eirh
m.lld & md @.r.qudtly strdla .o mr b. vi3ibt . Ilis i! p@j$ly thc ce for rhe
obgMtaom m. 286,2.rd 272, lna @.ctn s ct.itried ro b. sl eirh nrl€d eyc
but the Lury RiFnB te i.di.d6 rh. otsuriB P@ imf.sibt. (My lo, A&,
vlluet wh€@ the Blbylonia. dilsio. atlos fi.n. So lb. quGrion lriss, for pt.as
with hign6 bdlud.q etipric mch inclin.d rorsds hdia Dd dE qegn b€inA o.
hori@n !id. oI ilE eliptic ah@ld w giv. do.! .Uolle for !c? Shoutd rhe p€.I! ol
tlE Rip.B Fundion {q be low th.. $c, e &cotding io 6glB 3.1.2 to 1.3 5 clos.
to tlE rltmr.l .quimr? TrF luF ii ddd, lcr.rt jn lh. dilosio. of thc
@nsloinrs ofrhc Lu@ &F|€3s tuturion wtEn ir i5 poi.t d od rhr for rcry low AR",
v.ru.3 rh. d*qn of bw LAc hn okt agc.td hjc DAz i, E ofl.d ro ben sd. thjs
nay b. th. po$ibl€ l6$n for rt. nrort n sirob@! tik. MDidd !.d Fothdiigh|n
tu qploriig .el.ri@ b.tqq ARCV .d DAz for the ft51 vhibitity of tu@ cresn
o,^. --.
ig
Fig No 3 4.t: Spncriql Trigonomfiic ih..iFion of 6ndiiid, of nq lu@ de*nt
t09