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Show [ i7t1 J /' ')0 l1·J~· Ne llll\CTA 11 F OHT. · ·· Detcnnowt.wn ~ f ("t,.J J 1,r?r i/urlc 1 Jun(' ~ t IB-1 ~- a!li lrufcs r!/' lh e SW I. rnrsr SJ.Hr l H. M,·:('ONll hJ Ill I H. Do11hfe .lltitud(''l of tlw ~ 1111's lo\\f r limb. Tir rc of< ruonomckr. II Double~ n\tit11cl<·H of !lle ~ ua'r; lower lind>. Tiuw <>f chronolllclcr. Or~ 7111, . scr. ')~ IS fJf) h. '> f12 :!·1 J'"> !J~ ,t(; (,() f,'l f>D :J f> f>:l l (i 1 [> M(',m time. I! min. .~ec. 7 O!l 4:l 1/1.111 . ,t .. t~ JJcp,. ))/ t 1/ , ~!> :l!) () !r:l :u ·~ () 20. : ~ !> :~ II r; 2G fr I. h b:l f>'l 21 •.n o 1>1 I b 29 r 1 (i b1 2~1 lwlc·x error = + 5 ~:~cc. tm~Ul.'l ' CH' CALClll. /\ T lON. h. min. ~cc. l :n J J.G .v:r.. h. min. ()(} ~ 2i ()() 29 2:> ~~0 110 :10 ~IU :JI Longitude. Immersion of ,! upiler' s first satellite. Observed time. h. mi11. sec. 0 57 05.5 a. m. 2 Mean time. mitt. 31 sec. l4.2 a. m I..ongitudo. Dtg. 109 .~rc. , H () :30.1 01.0 ,8.5 2j,3 au.. 4.2 , 5 ~ 3 [ 174 ] ENC.\MPMP.NT ON AHHJ.EY'S I"'OIUr. Determination of longittulf•, .June '>, l '4'1-ull it udes of a. Lyra::. 0 B !iJ~ H V A'l'l 0 N:l. fl tt'iT IH' Jt l ~'i . Double nlti lwlr~oo of a Lync. Deg. min. .vee. 67 09 30 67 31 20 67 49 10 68 JO :Jo 68 29 l fi Mean tun . ll. min. sec. 8 36 17 T wH . of ehr<HlOtH<'Icr. JJouhln 11.ltitu<ks of 11 Ly ra•. ft. min. Sf'('. nr~. min. 51 10 0 GU 19 52 2 1. () 70 09 53 15.7 70 27 M 15. z 70 16 !j!) 00. () 71 07 ln<k x error ... + fi st·r. RE 'UL'l' OF CAJ.. . CULA1'ION. ------- Retard. lt. min. sec. I 39 14.0 ,'If' C. 30 !30 10 15 05 Tinw of c!tronomc•ter. "· min. V('C. f) 68 59.7 50 58.2 7 00 48.4 01 44.. 7 02 42.0 L ongitude. Determination of latitude, JunP. 5, 184-J.-altitudes of Polaris. OBSEHVATION . Double altitude::; of Polaris. Time of chronometer. DeK. min . sec. h. min. sec. 77 58 <10 7 07 00 77 58 50 08 18 77 58 30 09 35 77 59 30 11 26 77 59 50 13 10 78 00 00 14 :34 78 00 15 16 03 7S 00 15 17 08 78 0 30 18 59 78 00 10 19 56 Thermometer 60°. 1 ntlcx error = + 5 &'C. --- --~-- HE.SULT OF CALCULATION. True ultitudtl. Deg. min. 38 58 sec. 42 Mean time. ft. wm. M·c. 52 57 Lutitudo. Drg. min. 11ec. 4.0 28 07 ----------------~----------------------~-------------------~ |