Assertion: telescope's mirror | /r/HasProperty | placed at angle
Facets:
value: in the cylinder
type: LOCATION
value: in a newtonian telescope
type: LOCATION
Source sentences:
text: In a Newtonian telescope, a flat mirror is placed at an angle in the same position as the secondary mirror in a Cassegrain.
text: In some designs, the eyepiece is located at the side of the cylinder, with the secondary mirror being placed at an angle in the cylinder so that the light is bent to meet the viewer.