69A0099A.html |
RA Range: 3h - 23.5h
Constraint set (Typical seeing, Transparency,Airmass, FLI, Moon distance): 0.8 2CLR 0.3 90
| 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 very simple observations to be made of 5 clusters of galaxies all at redshift z~0.1 in 3 colours B,V and R. The aim of the programme is to measure the gravitational weak shear on the faint background galaxies lensed by the cluster. This measure will be done using the R filter, and thus better seeing (<0.8") is required for this imaging. This program requested for Standard Calibrations in all BVR filters. Critical Observing Condition!!!: For the R-band imaging, good seeing is critical (<0.8") The B and V observation will provide colour information to learn more on the type/distance of the brighter/cluster galaxies, it can be done with slightly worse seeing (<1.0").
README of this run: