The Express.
London, England, 1860-06-04 00:00:00

GREENWICH OBSERVATORY-A NEW
TELESCOPE.

It may not be generally known that there is an
annual visitation of this important establishment by the
president and officers and • limited number of the fellows of
the Royal Society, who on that occasion examine the date
of the instruments on which the value and efficacy of the
institution depend. This took place for the present year on
Saturday feat, and notwithstanding the unpropitious weather,
was vesyfall
Bamr attended. The president of the Royal Society
(Sir n Brodie) and his predecessor in that office
(Lord rottedey) were there, and among the visitors were
included Ida litorlienc Count Matey the Swedish Weis-
ter, Sir Jain Herschel, Dr. Whewell, and many distin-
geisha sedreetorms, both foreign and British, betides
oilmen who awe maim to prmote the science of astronomy,
and to distiagehh thenribres in its various branches. The
peculiar abject of taints en the present occasion was the
mounting ri a now ani=ent equatorial telescope by
the ABUCINDINON Airy, surpassing in mag-
nitude raly ether elide swishy or in Prance, and nearly
on a par with the asisheated keleument at Pulkowa, which
has achieved meek for the saws sad is an instance of the
I munificence of the ger, ernment. The size of the
object glass at the Observatory is nearly 13 inches
diameter, and the of the telescope appears to be
about 14 or lb ass tie so nicely Wangled on its axis es
to be movable katisally with the eilikeerl touch, so that
it dal be glinted sir iispremed to the view of any object be-
tween the harken sad the andth whit such facility that it
name as if it morsel seffil=t4 k sir, without the lead
Mears on he reppertbe,
/be easeemeni el the pe axis la lessitudie leering tie
apps it is a owe alas* maw. sad exhibits
ilit oil 000trivanoss, faileilles it` hislinowled,pi
of the jest to be attained. and the very
sad issientlik knowledge in esmykg it out.Wrhe=
saplientha of these contrivances the telescope and the vast
freeides by which it is _ ,-peeted are carried rood by •
clock with the most peeled - useethness, so that is watch-
ing, times! a misnerrepa, Ms swami onward hevessest of
the shah isete sot ass ellstient asevseness or irregularity
in the neinkkei can be presehed, and this, °moldering that
the whole ewer trlfeeldia motion by the clock weighs
F21i...,. the =shipski .
Ingnetrwmacluataf
will the pair axis is not permanent, but
is strode ta sr diskelmd with perfect facility in an
instant of Vim me that the astronomer using the
teleseopi sets it le equatorial or vertical motion
with the mart perfect esnesaand- If he desires to examine
the object he el his found, be attaches the telescope to the
polar axis and brings the clock motion into operation almost
in the some %S ant, which then moves the telescope egos-
tonally in as opposite direction to the movement of the
surface of the earth, so that the line of sight through it
continues directed to that one object, whether it be the
sue, the meek say ass of the pMets or satellites, or
say fined elanintheit he hewer mob particularly to
mask& Behind the object glom ere waived minute
cobweb Saes, whisk enable the otesrree be rismars with
wiii?. ea it athe ttion ea iknhered iaathise orobtub ot;
erssaerzrianet.
. Aey one MAO time hi the Observatory may be
arose at irk by appeeirsse el eassiderable estisy, but
by tepees, as be esse threarseweist et all thecedlihrint
mai as sesabiefiss of sad delicate
ebsehetsly sassessy he he ha ha of
his mph telesselps
_be 'solids* so part of
stitieurrahre side have been stared end also he* the
r *SW, sal eolidity of Se wish are web as
almost te lid Mune to the owed= ef time.
Is erase le pet the full ewuepel he beneess, the floor of
the Obssevhsey hadi to be nisi above lb* level of the
ground. but the piers ft brains,* es wide b the being
. posts of he teisseepe rent are is sabelehlal as the men
emetics srelitsh amid helm We (risses) esnipsislate
' the ArAse!seseß lapel es the powerful eseehhiss Ie bier
mussel he. firths ale Oohs 44 tie bersens, sirt hart
i het feels illaremilsi he his elvers study aad kbour
is Whotrim* waft hem Asir Wire rarer&