The light from a distant object falls on the primary mirror (also called the objective) and is then reflected to the secondary mirror.
(The light from a distant object; falls; on the primary mirror) (the primary mirror; also called; the objective) (The light from a distant object; is reflected; to the secondary mirror; T:then)
The light from a distant object the primary mirror The light from a distant object
falls also called is reflected
on the primary mirror
the objective
to the secondary mirror T:then