Assertion: telescope's light | /r/HasProperty | headed towards the eyepiece
Facets:
value: originally
type: MANNER
Source sentences:
text: To accomplish this automatically an autoguider is usually attached to either a guidescope or finderscope, which is a smaller telescope oriented in the same direction as the main telescope, or an off-axis guider, which uses a prism to divert some of the light originally headed towards the eyepiece.