67D0106A.html |
RA Range: 10h - 23h
Constraint set (Typical seeing, Transparency,Airmass, FLI, Moon distance): 1.5, 3THN, 1.8, 1.0, 30
| Pre-imaging run? |
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Chilean run? |
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Special calibrations? |
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| Time critical? |
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ToO? |
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Carry-over run? |
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High-res (R=60.000) observations of the sulphur lines at 869, 923, and 1046 nm in halo stars. Depending of the radial velocity shift of the star, the SI lines may be blended by telluric H2O lines. Hence, it is important that the given OBs for fast rotating early B-type stars are executed. Expected S/N at the wavelengths of interest are 300, 250, and 100, respectively. Hence, it is important that a sufficient number of day-time flat-field calibration frames are taken. Constraints relaxed wrt Phase1, because of use of I.S. #1. Airmasses were specified by user already as tight as possible. ==> Please, check updated README file for observing strategy of the only telluric standard star (HR8858) to be used for the remaining 10 program stars, and for target priorities. Preferentially, the program stars should be grouped together on a few nights.
README of this run: