Assertion: eyepiece | /r/HasAspect | long eye relief
Facets:
value: very
type: DEGREE
value: for comfortable star-shooting
type: PURPOSE
Source sentences:
text: This eyepiece has a long eye relief for comfortable star-shooting.
text: Yes, with eyepieces having short focal lengths and very long eye reliefs (e.g. Radians, Pentax XWs, Vixen Lanthanum, Orion ED) or eyepieces with an unusual characteristic called "spherical aberration of the exit pupil" (TeleVue nagler Type 1s).