Assertion: eyepiece's design | /r/HasProperty | symmetrical
Facets:
value: sometimes
type: TEMPORAL
value: nearly
type: DEGREE
Source sentences:
text: The currently available "Plössl" designs are both symmetrical and non-symmetrical.
text: Since the two doublets can be identical this design is sometimes called a symmetrical eyepiece.
text: To make matters even more complicated, some "Super Plössl" eyepieces are 4 lens symmetrical designs.
text: The currently available "Plössl" designs are both symmetrical and non-symmetrical.
text: Beginning with the Ramsden, it continues by showing designs which are nearly symmetrical.
text: If the two doublets are identical, this design is frequently called a symmetrical eyepiece.
text: Since the two doublets can be indistinguishable this design is sometimes called a symmetrical eyepiece.