Assertion: reticle eyepiece | /r/HasProperty | useful
Facets:
value: for aligning a finderscope
type: PURPOSE
value: for aligning a finder scope
type: PURPOSE
Source sentences:
text: An illuminated reticle eyepiece is needed for manual guiding exposures in astrophotography, and is useful for aligning a finder scope with the main telescope.
text: An illuminated reticle eyepiece is needed for guiding exposures in astrophotography, and is useful for aligning a finderscope with the main telescope.