Inauguration
28 Oct 1988
Antenna facts · Technical data
The Noto antenna
The Noto radio telescope was inaugurated on 28 October 1988. A 32-metre dish equipped with an active surface, for observing the universe in the radio bands.
Dish diameter
32 m
Efficiency @ 5 GHz
57%
Pointing accuracy
0.002°
Optical configuration
Mirrors and focus
Primary mirror
- GeometryParaboloid
- Diameter32 m
- Surface RMS400 µm
- Panels240 · 216 adjustable
- Actuators (active surface)244 digital
Secondary mirror
- GeometryHyperboloid
- Diameter3.2 m
Optical configurations
- Newtonian focus (F1)10.26 m
- Focal ratio (F1/D)0.321
- Cassegrain focus (F2)20.29 m
- Focal ratio (F2/D)0.634
Performance
Efficiency, pointing and slewing
Aperture efficiency
- 5 GHz57%
- 22 GHz50%
- 43 GHz40%
Pointing accuracy
- Azimuth axis0.002°
- Elevation axis0.002°
Frequency agility
- Change at Newtonian focus4 minutes
- Change at Cassegrain focusReal-time
Slew rate
- Azimuth axis48°/min
- Elevation axis40°/min
Aperture efficiency values are measured at the respective frequencies.