Assertion: telescope's field | /r/HasProperty | needed for 50mm square detectors
Facets:
Source sentences:
text: And where a large flat field is needed for 50mm square detectors, RCOS offers an optional Field Flattener/Corrector (FFC) that may be used when needed.
text: And where a large flat field is needed for 50mm square detectors, RCOS offers an optional Field Flattener/Corrector (FFC) that may be used when needed.