COSMIC SHEAR WITH ANTU/FORS1: An Optimal Use of Service Mode Observation
Abstract
The measurement of weak gravitational lensing induced by large-scale structures is one of the most challenging programmes for imaging with g r o u n d-based telescopes. The VLT, used in Service Mode, offers an exceptional technical configuration which in principle guarantees high-quality data for demanding programmes. The first attempt done in Period 63 turned out to work very well and provides a remarkable data set on a short time-scale as well as first constraints on cosmological models. It demonstrates that the VLT is a perfectly suited telescope for cosmic shear measurements. Moreover, when it is operated in service mode, this is the most competitive ground-based tool which could make a major breakthrough in the field.
- Publication:
-
The Messenger
- Pub Date:
- September 2000
- Bibcode:
- 2000Msngr.101...10M