71B0138A.html |
RA Range: 12:25, 14:29
Constraint set (Typical seeing, Transparency,Airmass, FLI, Moon distance): 2.0 2CLR 2.0 0.5 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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This is a LSS programme on the dwarf galaxy NGC4431. The OBs are designed to obtain long slit spectra along the major axis and offset westward and eastward of the major axis. Moreover, the PI has submitted 3 OBs to observe some reference stars. The users remarks that the I band acquisition images will be used for photometric purposes. Therefore, DO NOT SKIP THE ACQUISITION if groups of OBs are executed consecutively. In all cases target acquisition has to be performed on the galaxy nucleus. For the offset pointings, the relevant OBs will then apply a suitable offset to get to the region of interest. Finally, for each slit orientation (centered, westward, eastward), each OB has its own on-slit offset. NOTE: since the PI wants to use the acquisition images for scientific purposes, he should be provided with all required calibrations (bias, skyflats, phot. standards). The READOUT mode for _acq_ images is in fact <200kHz,2x2,low>, which is the standard for FORS2 imaging too. Unless other IMG OBs are executed when OBs from this programme are executed, this may require some manual intervention in order to create the proper calibration OBs. See also the README file.
README of this run: