Show WHERE THE 1 WORLDS S LARGEST TELESCOPES ARE LOCATED recent recant statement statement of ofa I Ia or of th VS that Iho Zhu Unit United I Id I Ic aX a lends kod th world In the thel s l ed d r of at large arge and consequently matter malteT telescopes hail and that r nt re m were to le bo to ex e eF fi t I tin their use u h In i this ells country In F yd vI from I Lf J I k jik ji I j The Lick Telescope fj Cn Cal 6 h b near mar future an 1111 Inquiry Into the tho seem went to be particularly It Is ts true truo that while tho thu i States State hal Gaels been a long time limo In riming liming to lI y Its lis la vast resources a tt 1 rt Mine power have linte hn 8 of ot late given agnat a 1 gnat Impetus to n nil movements making tT f the he worlds betterment aa nu mil ell as commercial n lal Wealth w wisely Isely dl fi t ded J ant and nj applied has liae hed tho the thor r me power and an nn Intelligent public 0 th It II has bas long lung birch known that If tf tube tele topeS could rould Ue 1 produced laige enough tn snI with lIh 1 nit n s powerful enough an on In might be Le pained gained worlds now separated from us by t o or of space spare To this till end the thu theis is and astronomers have havo 1 bin n working tor for centuries and with good goad results The nut first nutte te It Is said was made In 1101 Und land about 1608 1609 practically applied by In III WU and gradually Improved upon from rom the time of Sir Isaac Isano New Nell tun to that of Herschel Great t trio tele may maj ms to bo said call to have havo made their with Ith Sir William Willam t g 40 W In m 1789 with feht hh h he hp oral rit t of ot all astronomers dis dle covered the volcanoes of or tho the moon England took look th the lend lead and held It for years while Ibe good work olk was also aloe done donI In Europe Hut Veit lately the tho English I Us as astronomers admit that Amei America lea hits has advanced their country has fallen fallon be ho behind behind hind In this tills regard It was wan 08 In 1838 1898 that The OpO Lale alze Y C t eva Wis O o J I feet foet In hr diameter and Us lU mirror C ti feet across acro s Tills This and anil the mount lag cost nil of but bUl nt at Its lis h Ht worked Imperfectly and U Is now obsolete though till mill In occasional use It may l hl c whether the re roo reflecting fleeting or ur telescopes are to tob tobe tobe b be of or greater service In III the tho future for while the tho largest thai of ot the latest made tits the Yerk Yerkes telescope of the i Y a f i ci t Jl I Iv y v I 1 L tl s a tU I Ir r E r f b l GOi J naf Giant H t Telescope own s Ir by LI 11 how floss a lit Ireland J Lord HOBI Ilo s built buill t the tho n first gigantic re reflecting r e fleeting telescope with o n focal length of 1 52 f Curt et the tho tube being 66 56 feet Ceet long and ant 7 1 Chicago university Immediately pre preceded preceded I ceded It II and anti both have fully full realized the expectations of their tIr constructors constructor L Less than EO 60 years ago CIrO the largest Ie te telescope had hol an on object glass only C G Inches In diameter yet et It U was with this one OM that Sir John made his bits famous observations of at dou lIuI double double ble Me stars Soon SOOIl otter after object glasses of 9 o Inches then ot of 14 1 Inches were man manufactured and mounted one Otte of or the he lat lal latter ter tor being placed In the Harvard college observatory olJa In 1817 1917 Then followed the telescope with a 23 Inch aper I The Paris aris tJ ar eel in iii World ii I Iy y I I I L c J e fI Tr 1 I II i f Sri kt l I I Mw Q ab 1 G Jl If J s 1 It t fit f 1 1 tr II C I turc turo the Washington Naval observatory with one of 26 Greenwich England with 2 Inches Moudon and Nice France each with one of ot 20 29 Inches Meudon again with a It 82 32 Inch the tho Lick LI k California with Its big bill 30 Inch meth and the thu Yerkes at Geneva Gene Lake kc WIs with the largest of its III kind ever produced 40 Inches In diameter din meter The hugest reflect reflector re ector or of recent times Is the lute telescope first exhibited at nt tho the exposition of 1100 OO with object glass 49 40 Inches across and which Is neatly nearly duplicated by Ly that of oC Melbourne university Australia It If the tho makers of oC tenses lenses or object glass glasses s ses es cs could keep pace with the demands of ut the astronomers It II would not bo ho very vcr Ion long before all nil the important bodies would be brought visually with within in n 11 few tew miles of oC o t the earth coheir but hut there thre e Is Isa a limit to the size of ut the lenses they the can cast and polish p anti n f limit ft It Is thought line has peon been nearly The Tho process is III B complicated arid ami Costly there are but taw few t lW successful hunkers fI orl of pC tel coplo I In th tier iliff There In Iii Innone none nOM in III fact who can surpass the Clarks ot at rl f oil MUM Musa Iu s who shaped and anil ani the Ih dl tusks II K ll for the Yerkes Vi lies The Tho firm at al present hy by Alvan U t I plaik was wall founded O IX by but father Alvun Clark neatly nearly W Q ago J I KI II 11 moats inami begun aa IU early HH as If 1615 In III a wo and ami IIII oil ert In the of at tho thu lenses for III the ho 36 inch thu largest 1 hoi hart attempt attempted ed cd and later of nt the Ihu 40 fO i Inch tens leim for or blip Ilio telescope Mr more than for lor or the rough roush disks of or orthe the that Hint bears his unto and paid pahl Clark fur far or and n l miring suring them thorn AH All many ulaY lenses era are frao rae turl in dm the grinding and have havo to be hI re ru replaced replaced placed again lIln and agate again tho the business of polishing Is attended with enormous risk In a comparison of oC tho the worlds trio tele telescopes scopes up tip to the tho present t time there Is no doubt that lint the thc United lolled States Slates Is lit In advance bith h th as ns to number and sire Biro With the ilia cole Cola oo exception of the tho Paris telescope tel tol of or 1900 I OO which has a n tube UC feet In length the tho telescope with Its focal Cocal length of 61 feet teet Is the largest In tho the world the second l largest arg st being the which bitch Is 18 57 67 feet foet 10 Inches Inch es us It should be he sold said of or the Paris In Instrument Instrument strument however that It differs differ from the Iho American telescopes In being mounted horizontally on all a n rigid bed hell nail In III having a 11 reflector Instead of ot u p ui i retracting effecting lens ions The Till United States Slates then thon still holds tho the honors for refracting retracting telescopes and mid moreover It Is hi admitted by h all 1111 that If I the French Instrument were mounted In some somo elevated position hav hay havIng lug Ing IllI the tho clearer atmosphere of America It would do much more for science than It has hall done clone already It Is the tho advantageous advantageous position of the Lick Mck observatory situated as It Is feet above the noa lIoa I In the tho clear atmosphere of California that has bee ha caused aused an English lIsh scientific writer to point out the tho fact tact of ot Its hay hav havIng brig Ing done donI more for modern astronomy than any other Instrument In tho the world The Lick telescope weighs 40 10 O tons and the 75 G tons For tire tho construe Ion and and mounting of or tho former a 11 fund of was all available and for the latter batter The lens Ions of oC the lire great Paris telescope weighs pounds Its i casting and ant polishing being looked upon as a n miracle of Ingenuity The I Yerkes objective as mounted In Its lis Iron cell weights weighs 1000 pounds One of the worlds curiosities Is the bite elbow c 1110 1 telescope of the tl t Paris ally elty the thc tube of ot which Is III bent with a II reflecting mirror at the angle Into which the observer looks through the eyepiece It Is the opinion of an acknowledged astronomical expert that the giant as ns astrophysical telescope of the future fu I ure Is to tobe tobe tobe be of the reflector ru class closs owing to tho the fact that It II gives brighter linage Images both bothIn In the visual Usual and the photographic re regions regions gions glons with flit an nn aperture more than 40 Inches In diameter and also can ran bi be worked and mounted nt at less Ic s cost and trouble than tire the refractor retractor |