TELESCOPE PERFORMENCE

Fundamental Performance Parameters

2021-03-20

Name

            Fundamental Performance Parameters

Site location

Longitude:106°51' 24.0"E,  latitude :25°39' 10.6"N,  Altitude: 1110.0288 m 

Diameter of the spherical reflector

                           500 m

Illumination aperture

                           300 m

Focal ratio

                         0.46-0.47

Sky coverage

                   Zenith angle (ZA) <40°

Receiver (L-band)

                    Multi-beam(19 beams)

Working frequency

                    1050 MHz-1450 MHz

Bandwidth

                           400 MHz

Sensitivity

            ZA26.4°:  ~16.0 K/Jy (Central beam)

    26.4°<ZA <40.0°:  ~11.5 K/Jy - 16.0 K/Jy (Central beam)

For other beam values, please see the papers below at Note.

System noise temperature 

       ~19K -27K, depending on ZA (Central beam)

  For other beam values, please see the papers below at Note.

Angle resolution

                            ~2.9ꞌ 

Pointing accuracy

                            < 16″

 

FAST Backend Systems

Backend

Bandwidth

Sampling

Stokes

 

Channels

 

 

 

Spectral line

Spec(F)

500 MHz

0.1s,  0.2s,

0.5s,  1.0s

Full or

2polarizations

(XX、YY)

  1024 k

 Spec(W+N)

500 MHz+

31.125 MHz

0.1s,  0.2s,

0.5s,  1.0s 

Full or

2polarizations

(XX、YY)

   64 k

 

Pulsar

  

500 MHz

49.152 us,

98.304 us

196.608 us

Full or

2polarizations

(XX、YY)

4k(default)

1k,2k,8k

 

Note: For the detailed parameters of FAST, please see the following papers:

  1. Commissioning progress of the FAST
  2. The fundamental performance of FAST with 19-beam receiver at L band
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