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Table 1

Radio telescopes participating in RadioAstron observation of 0642+449.

Telescope D SEFD Observing time [UT] B max
Code [m] [Jy] GK047A GK047C [DE]

Spektr-R SRT (RU) RA 10 2840 10:00–01:00 14:00–15:00 ...
Effelsberg (DE) EF 100 19 10:00–01:00 14:00–15:00 5.87
Jodrell Bank (UK) JB 76 65 10:00–01:00 14:50–15:00 5.93
WSRT (NL) WB 66 40 13:00–01:00 14:00–15:00 5.90
Torun (PL) TR 32 300 10:00–01:00 2.76
Urumqi (CH) UR 25 300 10:00–23:00 3.02
Shanghai (CH) SH 65 670 10:00–19:00 3.26
Noto (I) NT 32 784 10:30–01:00 2.69
Hartebeesthoek (SA) HH 26 430 14:30–20:00 1.91
Green Bank (USA) GB 100 10 17:00–01:00 1.63
Zelenchukskaya (RU) ZC 32 300 19:30–23:30 1.67

Notes. D – antenna diameter (

(†)

– equivalent diameter); SEFD – system equivalent flux density (system noise), describing the antenna sensitivity; Bmax – largest projected baseline in the data, in units of the Earth diameter.

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