DREAM: Dutch real-time acquisition mode for SCUBA

Rudolf S. Le Poole; H. W. van Someren Greve

doi:10.1117/12.317420

31 July 1998 DREAM: Dutch real-time acquisition mode for SCUBA

Rudolf S. Le Poole, H. W. van Someren Greve

Proceedings Volume 3357, Advanced Technology MMW, Radio, and Terahertz Telescopes; (1998) https://doi.org/10.1117/12.317420
Event: Astronomical Telescopes and Instrumentation, 1998, Kona, HI, United States

Abstract

In order to improve the efficiency with which SCUBA (see elsewhere in this conference) operates on the JCMT, a new and innovative data acquisition system has been developed and will be implemented shortly. The fundamental innovation is in the operation of the telescope secondary mirror, merging the function of chopping for sky-elimination, and 'jiggling' to sub-pixel positions to Nyquist sample the image as seen by the arrays themselves. This eliminates the need to sample 'empty sky' for half the time, thus doubling the time spent 'on target.' Additional expected advantages are: (1) improved sky suppression and; (2) increased dynamic range in the resulting image. It is hoped that the target of shotnoise limited performance will prove within reach.

Citation Download Citation

Rudolf S. Le Poole and H. W. van Someren Greve "DREAM: Dutch real-time acquisition mode for SCUBA", Proc. SPIE 3357, Advanced Technology MMW, Radio, and Terahertz Telescopes, (31 July 1998); https://doi.org/10.1117/12.317420

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