We describe here the important astrophysical results that could be obtained by using large format (say 32 by 32) bolometric detectors at 1 and 2 mm with the IRAM 30m telescope: having a confusion-limited 1 mm extragalactic survey containing a large fraction of high redshift objects, mapping star formation regions in our galaxy at 1 mm, and mapping the Sunyaev-Zeldovich effect at 2 mm in tens of high-redshift clusters. We also show a first optical implementation and the key points of this project.
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