Table 1: Log of the observations.
Telescope Date Seeing( $\hbox{$^{\prime\prime}$ }$ ) No. of frames Exp. Times (s)

u v b y ${H}_{\beta}$

1.23 m CAHA 1999/01/12-15 (1) 19 1900 800 400 400 2000

1.23 m CAHA 2000/01/05-10 1.0-1.3 54 2200 1400 900 800 1400

1.52 m OAN 1999/01/13-16 (1) 36 1900 800 400 400 2000

1.52 m OAN 2000/02/07-14 (1) 23 - - 900 800 1400

1 m JKT 1998/12/11-14 (1) 81 2000 1200 800 700 1200

1 m JKT 2000/02/02-06 0.9-1.3 37 - - - - 2000

2.5 m WFC-INT 2000/02/02-03 1.3 23 2000 2000 1200 500 -

(1) Poor weather conditions. Images not used in the final data.

**Table 1:** Log of the observations.
Telescope	Date	Seeing( $\hbox{$^{\prime\prime}$ }$ )	No. of frames		Exp.	Times	(s)
				u	v	b	y	${H}_{\beta}$
1.23 m CAHA	1999/01/12-15	(1)	19	1900	800	400	400	2000
1.23 m CAHA	2000/01/05-10	1.0-1.3	54	2200	1400	900	800	1400
1.52 m OAN	1999/01/13-16	(1)	36	1900	800	400	400	2000
1.52 m OAN	2000/02/07-14	(1)	23	-	-	900	800	1400
1 m JKT	1998/12/11-14	(1)	81	2000	1200	800	700	1200
1 m JKT	2000/02/02-06	0.9-1.3	37	-	-	-	-	2000
2.5 m WFC-INT	2000/02/02-03	1.3	23	2000	2000	1200	500	-

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