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Table 1.

BINGO project parameters – Phase 1.

Parameter Value Unit
Tsys 70 K
Lower frequency cutoff (fmin) 980 MHz
Higher frequency cutoff (fmax) 1260 MHz
Frequency band (B) 280 MHz
Number of redshift bands (a) 30
Sampling time (Hz) τs 10
Instrument noise (1 s, 1 redshift band) (b) 23 mK
Primary dish (Paraboloid)
Semi-major axis (c) 25.5 m
Semi-minor axis (d) 20.0 m
Concavity 0.7 m
Secondary dish (Hyperboloid)
Semi-major axis (e) 18.3 m
Semi-minor axis (f) 17.8 m
Concavity 0.5 m
Total area (Atot) 1602 m2
Mean effective area (Aeff) (g) 621 m2
Telescope azimuth orientation 0 deg (north)
Focal plane area (h) 18.6 × 7.8 m2
Instantaneous focal plane area (i) 14.75 × 6.0 (Dec, RA) deg.
Focal length 63.2 m
Telescope beam solid angle (Ωbeam) (j) 0.35 sqr deg
Optics FWHM (@1.1 GHz) ∼0.67 deg
Number of feed horns (Phase 1) 28
Number of circular polarizations 2
Vertical horn center separation 2.4 m
Maximum declination coverage (k) 15.31 deg.
Mission duration (Phase 1) 5 years
Full survey area (5 yr) 5324 sqr. deg.
Duty cycle (Phase 1) 60–90 % of the time



Assumed for science simulations, operational value will be downsampled from the digital backend output.


Considering 28 horns, one polarization, one redshift band, and 60% duty cycle.


Computed by GRASP.


Average from individual areas computed by GRASP. Actual values vary from 532–653 m2.


Measured from the edges of the array presented in Sect. 3.1.


Measured from center to center of the horns.


Beam solid angle value computed for f = 1120 MHz.


Considering ( ± )30 cm of vertical displacement, as described in Sect. 4.

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