Sextant
The angle between mirror 2 and the telescope is 6
0
o. One half of
this mirror is silvered and the other half is clear glass. Mirror M
1 is completely silvered and
can be rotated on the arm M
1V. When the arm is in position O the two mirrors are parallel to
each other.
Light coming from one object (B) makes an angle of A
o with light coming
from another object (C). Direction B could be the horizon and direction C the Sun or a
star.
