Assertion: newtonian telescope's design | /r/UsedFor | short focal lengths
Facets:
Source sentences:
text: Newtonian telescopes are one of the earliest reflector telescope designs and have been a standard ever since thanks to a simple yet effective optical design that allows for short focal lengths and excellent image quality and clarity.
text: Newtonian telescopes are one of the earliest reflector telescope designs and have been a standard ever since thanks to a simple yet effective optical design that allows for short focal lengths and excellent image quality and clarity.