1and diſtant from it a yard or thereabouts. This being placed, I
will ſeek in the Plain the place from whence one of the ſtars of
Charls's Waine, in paſſing by the Meridian, cometh to hide it
ſelf behind the beam ſo placed, or in caſe the beam ſhould not
be ſo big as to hide the ſtar, I will finde a ſtation where one
may ſee the ſaid beam to cut the ſaid ſtar into two equal parts;
an effect that with an ^{*} exquiſite Teleſcope may be perfectly
diſcerned. And if in the place where the ſaid accident is
ed, there were ſome building, it will be the more commodious;
but if not, I will cauſe a Pole to be ſtuck very faſt in the
ground, with ſome ſtanding mark to direct where to place the
eye anew, when ever I have a mind to repeat the obſervation.
The firſt of which obſervations I will make about the Summer
Solſtice, to continue afterwards from Moneth to Moneth, or
when I ſhall ſo pleaſe, to the other Solſtice; with which
vation one may diſcover the elevation and depreſſion of the ſtar,
though it be very ſmall. And if in that operation it ſhall
pen, that any mutation ſhall diſcover it ſelf, what and how great
benefit will it bring to Aſtronomy? Seeing that thereby, beſides
our being aſſured of the annual motion, we may come to know
the grandure and diſtance of the ſame ſtar.
will ſeek in the Plain the place from whence one of the ſtars of
Charls's Waine, in paſſing by the Meridian, cometh to hide it
ſelf behind the beam ſo placed, or in caſe the beam ſhould not
be ſo big as to hide the ſtar, I will finde a ſtation where one
may ſee the ſaid beam to cut the ſaid ſtar into two equal parts;
an effect that with an ^{*} exquiſite Teleſcope may be perfectly
diſcerned. And if in the place where the ſaid accident is
ed, there were ſome building, it will be the more commodious;
but if not, I will cauſe a Pole to be ſtuck very faſt in the
ground, with ſome ſtanding mark to direct where to place the
eye anew, when ever I have a mind to repeat the obſervation.
The firſt of which obſervations I will make about the Summer
Solſtice, to continue afterwards from Moneth to Moneth, or
when I ſhall ſo pleaſe, to the other Solſtice; with which
vation one may diſcover the elevation and depreſſion of the ſtar,
though it be very ſmall. And if in that operation it ſhall
pen, that any mutation ſhall diſcover it ſelf, what and how great
benefit will it bring to Aſtronomy? Seeing that thereby, beſides
our being aſſured of the annual motion, we may come to know
the grandure and diſtance of the ſame ſtar.
What
ments are apt for
moſt exact
vation.
ments are apt for
moſt exact
vation.
* Italian braces.
An exquiſite
obſervation of the
approach and
parture of the Sun
from the Summer
Solſtice.
obſervation of the
approach and
parture of the Sun
from the Summer
Solſtice.
A place
modated for the
obſervation of the
fixed ſtars, as to
what concers the
annual motion of
the Earth.
modated for the
obſervation of the
fixed ſtars, as to
what concers the
annual motion of
the Earth.
SAGR. I very well comprehend your whole proceedings;
and the operation ſeems to me ſo eaſie, and ſo commodious for
the purpoſe, that it may very rationally be thought, that either
Copernicus himſelf, or ſome other Aſtronomer had made trial
of it.
and the operation ſeems to me ſo eaſie, and ſo commodious for
the purpoſe, that it may very rationally be thought, that either
Copernicus himſelf, or ſome other Aſtronomer had made trial
of it.
SALV. But I judg the quite contrary, for it is not probable,
that if any one had experimented it, he would not have
tioned the event, whether it fell out in favour of this, or that
opinion; beſides that, no man that I can find, either for this,
or any other end, did ever go about to make ſuch an
on; which alſo without an exact Teleſcope could but badly be
effected.
that if any one had experimented it, he would not have
tioned the event, whether it fell out in favour of this, or that
opinion; beſides that, no man that I can find, either for this,
or any other end, did ever go about to make ſuch an
on; which alſo without an exact Teleſcope could but badly be
effected.
SIMP. I am fully ſatisfied with what you ſay. But ſeeing
that it is a great while to night, if you defire that I ſhall paſſe
the ſame quietly, let it not be a trouble to you to explain unto
us thoſe Problems, the declaration whereof you did even now
requeſt might be deferred until too morrow. Be pleaſed to grant
us your promiſed indulgence, and, laying aſide all other
ſes, proceed to ſhew us, that the motions which Copernicus aſſigns
to the Earth being taken for granted, and ſuppoſing the Sun
and fixed ſtars immoveable, there may follow the ſame
dents touching the elevations and depreſſions of the Sun,
ing the mutations of the Seaſons, and the inequality of dayes
and nights, &c. in the ſelf ſame manner, juſt as they are with
that it is a great while to night, if you defire that I ſhall paſſe
the ſame quietly, let it not be a trouble to you to explain unto
us thoſe Problems, the declaration whereof you did even now
requeſt might be deferred until too morrow. Be pleaſed to grant
us your promiſed indulgence, and, laying aſide all other
ſes, proceed to ſhew us, that the motions which Copernicus aſſigns
to the Earth being taken for granted, and ſuppoſing the Sun
and fixed ſtars immoveable, there may follow the ſame
dents touching the elevations and depreſſions of the Sun,
ing the mutations of the Seaſons, and the inequality of dayes
and nights, &c. in the ſelf ſame manner, juſt as they are with
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