Visibility of Luna and Lunar Crescent

Ap&1 frh rh. Elni* &idrh, rlE e ofvision !d tn. e oflighq dE dirc.it
lor €nnien visibility of luE d.gnr r€auircr ro aat it|ro @mid.6iion a @dba of
other pm$€rd. On. e.h p@n€tq t ihe As. ofthe Moon (AcE) = Tt To d.ffned
s th€ tine elaps.d sine th€ la.t onjuncli@ rill rh. doc of(rlE sn!.r or tlE any orhd
rclevut tioe) obsvltion Arbrhe inponDt lir.ror is dE Widft of Cres.r (w) thti
dep€Ids on rhc digre of$e Moor. As dE din@ of 6. Moon frm rhe €2trt veies
6on &@.d 0.14 nillion km to a@nd 0.4 nillid tD ln. Fni{i.rr€.d of rhe luw
disc vri6 liom I t e ninutF io | 65 e minur6.
Fig I L2
Ihun if rhc M@n ir dGc$ to in anh.r th. rirc of obs{tion rne c|ts@i
would b€ wid.g lnd th6 bndttrd Winh of tlE qtsfl i! di.6tly prcFrlo@t lo rhc
Ph.F (P) of th. M@, thll is r tunqio of dE ARCL. r\ @mpla. ltul of all rh.$
T.
2
2.
3
T.
t-
T-. T.