Assertion: telescope | /r/HasAspect | larger focal ratio
Facets:
value: usually
type: TEMPORAL
value: much
type: DEGREE
Source sentences:
text: Usually shortened to just Maksutov or Mak these scopes are similar in looks to an SCT but usually have a much larger focal ratio making them extremely good for planetary viewing but much less suitable for deep sky objects (DSOs) such as nebula.