New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1897-06-13
winter season there will be more coudiess nisn's
in Southern Wisconsin than on Mount Hani''oh'

,,rter ,csson Their, will be more cloudess nights
in Southern Wisconsin than on Mount hnh'''o"'
MOUNTING OF THE NEW GLASS
The great 4o-inch glass is mounted In tune
sixty-three or sixty-four feet long It's iocai 'ens
bears about tho same proportion TO us aPer.",e
as IL the case with the Lick telescope. whcn is
nineteen to one. A "dewcap," designed 10 'he''e.
the object glass from mist and frost, reaches gu.
fully eight feet from the big end OF the tupe, an"
It will often be necessary to attach spec'roneno
graph" or other instrument ten rect iohs nj '
eye end tower ninety-two feet In dam mel, ~,
paraus and astronomer The centre OF the abSys
motion Its great axis Is stands and
when telescope . pointed , the the base
end Of the Is n es ssr e o the
astronomer when he changes the a am s,,ow thc
mighty with from roD eas To- west the tube
is actuated with driving clock. itself weg h r
the the big lens: But arranged on the outside Of the
nSs w II Feet s hs WIFI be T used to
direct photographs OF the sun; and for pnStograpn
ing stellar speera small e,r hs eye end in
cordance with a suggestion made some time ago 10y
Professor Keller For ANOTHER important It'll, ana ha
unique branch OF Photographic work which VIII pc
carried on at Lake Geneva still another attach
ment viii be made which will presently be eH-
Two important members OF the staff at Lake
Geneva will be the double star expert B. W: Burn I'm
tncton by his discovery Of Jupiters fth satellite ,.
his photographs of Milky Way neDu9 ana o.ner
work Tho greater diameter OF the 1erkes glass;
will enable Mr.. Burnham to divide close douples
which could not be separated on Mount Hamilton
although the average seeing will probably be IN
fcrior Mr.. Barnard will give special attention TO
planets satellites and comets. and, In observation
OF exceedingly faint and distant objects VIII nave
the benefit OF the superior lght-gatherng power
Of the +o-inch, which Is about one-fourth greater
than that of the Lick telescope.
The director of the observatory. George r. Hale:
Is young man, who excited tho admiration OF
astronomers five or six years ago by his spectre
SCOPE explorations Of the sun. He established IN
Chicago private observa tory OF his own, and set
up therein a Pinch glass which has since
been removed to Lake Geneva. He then Invented
an exceedingly ingenious and original instrument
called the SUPERINTENDENT" This takes pict-
of the in new way. Instead OF letting
tho solar image fail directly the sensitive plate.
Professor Hale analyses the light with spectre
scope, and then only that very limited part
of il which Is be found in Of the bright cross
lines Of the solar spectrum. The particular line
which he usually selects is broad one attributed
to incandescent calcium vapor The apparatus Is
so managed that only such portions Of the suns
surface abound in this material are registered
the plate In the same manner he gets pictures
OF the chromospheric ring and prominences on the
suns limb. the disk itself being covered by round
shield. II Is impossible 20 give an adequate idea
here of the importance OF this new method OF re-
search. But II should be added that this work will
be carried a: Lake Geneva more extensively
than at the Kenwood Observatory and that Pro-
fessor Hales methods have inspired the confidence
Of the leading spectroscopists OF the world.