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Table 2.

Log of VLBA observations.

Date Time Total 1.6 GHz data
5 GHz data
8.4 GHz data
in 2010 since nova duration HPBW 1σ rms HPBW 1σ rms HPBW 1σ rms
(days) (hrs) (mas × mas, °) (μJy beam−1) (mas × mas, °) (μJy beam−1) (mas × mas, °) (μJy beam−1)
March 28(a) 18 3 ... 5.1 × 4.3, −60 90 ...
April 2 23 4 14.1 × 5.4, −13 260 5.4 × 4.1, −43 110 5.0 × 4.0, −48 75
April 6(b) 27 4 14.8 × 10.6, −18 160 4.7 × 3.7, −32 120 ...
April 10 31 4 13.5 × 9.1, −69 85 5.0 × 4.3, −55 95 ...
April 15(c) 36 4 14.0 × 10.8, −11 100 4.9 × 4.1, −34 85 ...
April 21(d) 42 4 15.1 × 12.8, −46 130 5.3 × 4.0, −46 120 ...
April 29(e) 50 4 14.6 × 13.3, 13 130 5.2 × 4.2, −19 100 ...
May 4(f) 55 4 15.2 × 13.7, 41 95 5.0 × 4.1, −38 90 ...
May 14(g) 65 4 13.4 × 9.0, 19 140 5.0 × 3.7, 10 110 ...
May 21(h) 72 4 13.7 × 10.2, −10 85 5.0 × 4.0, −22 90 ...

All dishes have the same 25 m diameter.

(a)

No Mk. Phase calibrator not detected at 1.6 GHz.

(b)

No Fd, Kp, Mk.

(c)

No useful data from Mk at 1.6 GHz.

(d)

No Fd, Sc; Mk did not give useful data at 1.6 GHz.

(e,f)

Mk, Sc did not give useful data at 1.6 GHz.

(g)

Fd no good data at either 1.6 or 5 GHz; Hn, Mk, Sc very few useful data at 1.6 GHz.

(h)

Mk, Sc very few useful data at 1.6 GHz.

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