The light striking this surface is thence directed into the telescope by reflection on the polished surface, thus also on the object.
(The light; striking; this surface) (The light striking this surface; is; thence directed into the telescope by reflection on the polished surface) (thence; directed; into the telescope; by reflection on the polished surface)
The light The light striking this surface thence
striking is directed
this surface
thence directed into the telescope by reflection on the polished surface
into the telescope by reflection on the polished surface