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Table 2.

Observing log of the P91 VLT/FORS2 MXU observations of RGB targets along the line of sight to the Tucana dSph.

Field Position (RA, Dec) Date/time Exp. Airmass DIMM seeing Grade ( ⋆ ) Slits
(J2000) (UT) (s) (″)
Tuc0 22:41:56, −64:24:43 2013-07-30/04:26 3400 1.44 0.78 B 27 (16+11)
2013-08-01/04:46 3400 1.39 0.80 A
2013-08-01/05:44 3400 1.32 0.92 A
2013-08-01/06:42 3400 1.30 0.90 A
2013-08-05/06:04 3400 1.30 0.98 A
2013-08-05/07:02 3400 1.31 1.13 A
2013-08-13/03:49 3400 1.41 0.69 A
2013-08-13/04:47 3400 1.33 0.57 A
2013-08-28/03:18 3400 1.36 0.65 A
2013-08-30/03:43 3400 1.33 0.89 A
Tuc1 22:42:04, −64:24:47 2013-09-05/02:07 3500 1.43 1.62 C (a) 27 (20+7)
2013-09-06/03:34 3500 1.31 0.77 A
2013-09-06/04:37 3500 1.30 0.89 A
2013-09-13/01:53 3500 1.40 1.49 C (b)
2013-09-13/02:54 3500 1.32 1.45 B
2013-10-01/01:35 3500 1.33 0.68 A
2013-10-25/02:17 3500 1.33 1.04 B
2014-07-21/07:28 3500 1.30 0.92 A
2014-07-21/08:40 3500 1.33 1.05 A
2014-07-27/06:07 3500 1.32 0.70 A
2014-07-27/07:10 3500 1.30 0.60 A
2014-07-27/08:18 200 1.33 0.65 C (c)
2014-07-29/05:14 3500 1.37 0.62 A

Total 54

Notes. From left to right, column names indicate: the pointing field name; the field center coordinates; observing date and starting time of the scientific exposure; the exposure time in seconds; the starting airmass; the average DIMM seeing during the exposure in arcsec; the ESO OB fulfillment grades (a full description is reported in the notes below); the number of slits/observed objects per mask. For each field, the mask design remained identical in each OB. The total number of slits (54) is reported in the last row of the table. ( ⋆ )ESO OB fulfillment Grades: (A) fully within constraints – OB completed; (B) mostly within constraints, some constraint is 10% violated – OB completed; (C) out of constraints – OB must be repeated:

(a)

seeing increased up to ∼1.2″ at OB’s end – FWHM of spectra ∼1.0″.

(b)

Seeing, FLI, and Moon distance out of constraints.

(c)

Aborted after 200 s because sky conditions changed to thin clouds.

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