Visibility of Luna and Lunar Crescent

In gendl l@kingd Lhe @npt.rcdsl! $ rn ubtr jn atFndrxtlt rl (m b€ nor.d
'Ihr€ t no clain of visibiliy by ey n€{s who slalue < -O.t9l. In f{r as
obrdolion nunbf 389 is not coDsin n( wjth .ny nod.l w dject n ed
ihercrore we claim $at th@ js no aulhotic obstuation (wi1h or wi$our optical
.id) ofneq lunar cEsenr for s-vatu. < 4,162. Thus cFsccn! can not be sen
wn€n vcr r-value < -0. l6 evs wirh a rel*cop€.
For -0.16 < r-value < -0,061h.rc e 26 (45olt clains ofcrcs vrs,bihy wirh
opncd aid our of58 rcporled sd coNidercd obse(arions.
^s
unaided visibilny
.laims 45J, 274 and l4l d lol coNnlenl wirh ey nodet s w @nclude lbal
fo. lhis tu8e ofr-utues the q€scenr cs be secn wirh opdcal ad only.
Ih 49 c6es wi$ -0.06 <
sighting with opricll aid
&cmne crescenr vi0r a
r{!lu. < 0.05 theG e
(41%) we conctudc rhar
or.eutd or a Glespe
u..ided sishring, Unaided sightine b nol impossibt€
ll ueided (25_5./0) ed 2l
thqe ac stonS chdces of
oii very slih chmc6 for
For 0 05 < r-vatue < o. I 5, rhce dc j5 sishtincs wirh dtuar ai d (1[r/r) and 14
$'thour oprical ad t2ra,. I hus rh. tuflr hay b€ easit) *.n qrh opucdt aid
nr h! r4se ot s-htr &d !m be seer wirhour opticaj dn under ver) Com
condnion (sarh{ coldiriotrs and heichr above *. lerct).
For r-ulue > O. t 5, oul of nexl 2 t3 obeR.rions th.
oplrcal aid I 65 timcs (77.5yo). Th@foE wc conclude
cEeent can bc esity seen.
c@kenr was s.en wirhour
th.t for r-valu > 0. 15 rh.
Thus ou oodcl $ar we @ll .eu€hi & (lh critcnon..cd be sleheiz€d 4
164