Instrument

A imagem é uma representação da estrutura do Radiotelescópio BINGO com o espelho primário ao centro, o espelho secundário do lado esquerdo e a estrutura das cornetas do lado direito. O logo do BINGO Telescope está do lado direito inferior na imagem

One of the largest radio telescopes in Latin America

Optical system and features

 

A summary of the optical system and features of BINGO can be found in the table below: 

Primary reflector

Off-axis paraboloid, 40 m in diameter

Secondary reflector

Off-axis hyperboloid, 36 m in diameter

Effective focal length     

63.2 m

FWHM

0.67 ° (40 ‘)

Number of horns

28 (circular polarization)

Horn opening

1.9 m

Horn length

4.3 m

Covered area in the sky

~ 5300 deg²

System Temperature    

70 K (non-cryogenic)

Frequency band 

980 – 1260 MHz

Redshift interval

0.13 – 0.45

Channel resolution for FFT

Undefined

BINGO will make observations in the frequency range between 980 MHz and 1260 MHz. The lower cut in frequency (980 MHz) is to minimize the RFI, reducing the interference of cell phone signals (between 700-956 MHz).

The BINGO radio telescope privileges a concept that is complementary to interferometric radio telescopes: it will use, for the same reflector system, many detectors in the focal plane. In general, interferometers are made up of many reflectors and only one detector (or few) in the focal plane. Telescopes like BINGO have a clear advantage in the cost of manufacturing and maintenance, in addition to the fact that data processing is inherently simpler. The obvious disadvantage is that the collecting area of an interferometer will normally be much larger than that of a single telescope, and the consequent angular resolution, much better. A schematic diagram of the telescope, with a hexagonal arrangement of the horns and the optical system, appears in Figure 1. The orientation of the focal plane in relation to the sky and the local coordinates is shown in Figure 2.

Figure 1: BINGO horn modules and conceptual arrange. 
Figure 2: BINGO’s optical design scheme with the orientation angles.

 

Bingo https://bingotelescope.org/

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