Assertion: telescope's mirror | /r/HasProperty | temperature
Facets:
value: by heaters
type: OTHER
Source sentences:
text: On the long wavelength end, the OTA was not designed with optimum IR performance in mind—for example, the mirrors are kept at stable (and warm, about 15 °C) temperatures by heaters.
text: On the long wavelength end, the OTA was not designed with optimum IR performance in mind—for example, the mirrors are kept at stable (and warm, about 15 °C) temperatures by heaters.