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Home All issues Volume 496 / No 3 (March IV 2009) A&A, 496 3 (2009) 777-786 Full HTML
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Table 1:

Observations log.
Telescope/ Observing Filter and DIT NDIT NINT FWHM Pixel scale Detector orientation Remarks
instrument date obs. mode [s]     [mas] [mas/px] [$^{\circ}$] (a)  
NTT/SHARP 6-July-2001 K imaging 0.5 250 2 671 $49.5 \pm 0.2$ $90.2 \pm 0.2$ (b)
VLT/ISAAC 27-July-2002 J imaging 1.8 33 7 652 $147.856 \pm 0.047$ $179.96 \pm 0.01$ (c)
VLT/ISAAC 27-July-2002 H imaging 1.8 33 7 801 $147.856 \pm 0.047$ $179.96 \pm 0.01$ (c)
VLT/ISAAC 27-July-2002 K imaging 1.8 33 7 717 $147.856 \pm 0.047$ $179.96 \pm 0.01$ (c)
VLT/FORS1 27-Mar.-2003 red spectrum 790 (d) 3 - 200 0 (e)
VLT/NACO 4-Sept.-2003 K imaging 1.7 40 10 83 $13.24 \pm 0.02$ $-0.02 \pm 0.09$ (g)
VLT/ISAAC 5-May-2004 K spectrum 0.11 9 26 - 71 0 (e)
VLT/NACO 25-June-2004 K imaging 3.5 20 27 116 $13.23 \pm 0.05$ $0.14 \pm 0.25$ (f)
VLT/NACO 13-June-2008 J imaging 20 3 22 391 $13.243 \pm 0.056$ $0.73 \pm 0.40$ (g)
VLT/NACO 13-June-2008 H imaging 15 4 30 285 $13.243 \pm 0.056$ $0.73 \pm 0.40$ (g)
VLT/NACO 13-June-2008 K imaging 10 6 30 231 $13.243 \pm 0.056$ $0.73 \pm 0.40$ (g)
Remarks: total exposure time are DIT (individual Detector Integration Times) times NDIT (number of DITs, together saved in one fits file) times NINT (number of jitter positions and files). (a) Measured from North over East to South. Positive detector orientations mean that they are to be added to values measured on raw frames. (b) Speckle imaging reported in Köhler et al. (2008), $500 \times 0.5$ s on two detector positions each. For astrometric calibration, see footnote 1. (c) Astrometric calibration with 2MASS sources in the field-of-view. (d) Three spectra of 790 s exposure each. (e) Nominal pixel scale and detector orientation from the fits header. (f) Astrometric calibration from Neuhäuser et al. (2005). (g) Astrometry done as in Neuhäuser et al. (2008) with Galactic Center images for 2003 and images of the Hipparcos binary HIP 73 357 for 2008.

Source LaTeX | All tables | In the text

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