69A9005A.html |
RA Range: 11.8h - 15.5h
Constraint set (Typical seeing, Transparency,Airmass, FLI, Moon distance): 1.4-2.0 3THN 1.3 0-1 40
| 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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The sky is imaged in survey mode in a search for quasars and lensed quasars, using single-filter (UBR), 20-offset modules, at starting at 45 target positions. Critical Observing Conditions!!!: 1.OB's must be executed with survey mode ON. 2.The same pointing mark on the WFI should be kept throughout, because the mosaics executed by different TIO's must overlie to within a few arcsec. Time Critical!!! 1.As coded by the OB constraint section, the choice of R, B, or U is strongly dependent on the lunar phase. Especially the observing blocks marked with (***) in README file aim close to where the full moon will pass in late April, so any window of opportunity to do them well away from 25-27 April should be used. 2.Upon execution of one or more color at a target position, the color(s) remaining to be observed at the target position should get status MUST on the remaining nights. In the end, an imperfectly observed triplet of colors (UBR) is more valuable than any perfectly observed subset thereof. Thus overriding importance in the final few nights should go to COMPLETING (UBR color) TRIPLETS rather than starting new ones. PI requested for standard calibrations: preferably at least 21 biases and 7 flats per color.
README of this run: