New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1893-04-23

,...,o.,on,,s =, 4.Inch glass. for taking photo
S waS IL useless for vision Very fair pictures 81
sunspcts however may W. com. ,broush the eye
psce and fan on sheet of paper adjusted lie"
nGhe, as be said about pieces These are TIE
mcro.copes with Which the picture brought down r .ne
tube examined. one ev of different n"weps. The
ana pel nhipct 10 be studied and the various a,mos
niric conditions render variety necessary "o
PhcI" "d ~, ,ttoching TO small telescope Il sui
over lls'r.u a w or finder" such Is used win
larger instruments most aschomsrs pre' Srttly sub
1r n ev.pece Of hgher power for better seelS
Ths is more economical ana oherWse NOR III ~
Ncntrm'' a., nwfni briancy Of that orb By means OF
an additional cap Of coorcd glass over the 80 are
az 80 eniIor device. special solar eye-pi'ces are
ornnnd with some telescopes well NeW W
NIX ontician recommends the use OF small uish, -, %
nncrd nnder the Unstable brass cap over .he eN h
piece Then II Is cracked nS ne h", oItronomcr
Immediately and cheapy replaced II the T di
nnt scrurrd a proper supply. Another useui ueNies
at the small end of telescope IS pr nSnn,ocn By
Mems of Ills the picture Is made TO turn right aneic'
When n star or other heavenly BODY Is hnalE o''
hond and a Telescope Is pointed almost drectIy up
nd The observer finds 1t very inconvenent TO iooh
,hrouch straight tube. The prism allows i, y.
,, N''T r,nrc is a loss Of light with this attach
mcni so t,iat Is undesirable TO use 1t except VINE"
RE mounting Of telescope Is an important item
in tie expense. There Is chance here to a mSG
economy ii the buyer fully understands where anu ~
how hr Is TO use his instrument. II he intends 10
have n permanent fixture. steady iron plar 81.
upon masonry. to sustain his tube then IL Is %or,n
While to procure two three other things which are
Of IittIc use on a portable tripod In the latter caSt
the siand should be- heavy enough to be rigid ana iot
n tic like The folding spidcreg support OF tourist )
nn,ora If should be- stiff that when the observer
r"n'oyrs his finger il win spring back. The mo
lion should all be in the metal joints at the top OF w.,
,ripod and not twist in the wooden leg But i ls
Object having been once secured. the support should
be- as light possible" for convenience IN carT Ndd ~,
and ont Of doors and shifting about. The" eoou uu
alt aZlnIIth' mounting. coHpo0'u VI
olnts-onc allowing the tube to ZIP up ana DOW" L., I, ,
needs This will b. surrounded by saddle. INTO
which the tube may lie faSehrd by buckle or Sc, s
so ouclJy does u star move out Of the field oil View
no ~ narth., rotation that after the telescope has
once been trained that object. II Is necessary 10
tc"p % rSq he NEEDED T ye housh there
some trouble at first Eu i ,hc support be ,S p' ,hc
Telescope may b. made to follow the star 10y SLOW
motion tangent screw" reaching out 1901 or ,"p
from mounting and held constantly III r ,h n', "
a. clccI,wo.t for driving with n pillar. too one
r,icb enable The observer. vino already knows the
diln,ton,, and right ascension Of object
ay = small comc-'o point the telescope to the right
b,r r. T. ioo faini TO hc visible to the naked eye
or pcr,aI, II f. a star which cannot be seen WITHOUT
cln', merely because Of daylight lntil Il man De- DE-,
comes skilled In astronomy. however h" has nv" u"
have both pillar and portable tripod. The tube can
BE- quickly Transferred from one TO IN" oArr ,no,o
IL
.rat.r r,rcis q fcw experiences nj nr't "Nl'h P'II'
md perh ms dcpr.-, him lie does not seem I" get VIZ
tuach 81 focusing sharply. tn" focus nay p nmo
.ht some other persons eyes. ih Il siS', ~,
. necessary for lis, Intil Ice secure. he rl, huIm,
M lie cannot expect TO satisfactorily. MUCH hoi
,i.uontl, on delicate work her" than ~" i uk'N 70
realize nth J." trains his hand 10 moNr ".r W.,
',a a. rnourh and I'm Tho right dircciion--this III
.,riimcni Ike camera. reNcr-"- me picture n'
VIII escape from him sometimes. ana D" 'nhlo' rc,'
.,fch II aeaIn especially with hieh-poW"r eye V''
n trl.-tonc has not been allowed 70 s'Aiu III ~
,nen air where II f. 10 hc u-ed long enough "" ".N
. lot q flo
Z uniuf.d uuf 81 M" open window OF u room lil'1
,orti, and o. curltv will result which ih" observer
- an, IN consider permanent defect OF hl' lhhliu
.noJ ra,rroi .,..cht and having accurately i"cno'u
IT, rq-. mu.i not expect 70 So" unit" as nl,m 1t
un lie mus not lr II appointed when h" di,c'N'r'
, The nu,-cf ~ h. career that l." cannot ui,''dn
80, I, .,r,rn,ni. than his. Ills will serve nm
otter in limo Patience ntclliecnc" nnd non"r,''"n
foo irving hi, high power "y"Ilrc'' vi" WI" 7''''