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Cornell-Caltech Atacama Telescope (CCAT)

Cornell-Caltech Atacama Telescope (CCAT). 4. Estimated Performance. Performance comparison. The confusion level in this case is simply scaled by aperture area/wavelength from the (measured) SCUBA 850 μ m 1- σ level. Performance comparison. *Compact ALMA configuration 1 Slightly undersampled.

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Cornell-Caltech Atacama Telescope (CCAT)

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  1. Cornell-Caltech Atacama Telescope(CCAT) • 4. Estimated Performance

  2. Performance comparison The confusion level in this case is simply scaled by aperture area/wavelength from the (measured) SCUBA 850μm 1-σlevel

  3. Performance comparison *Compact ALMA configuration 1Slightly undersampled The confusion level in this case is simply scaled by aperture area/wavelength from the (measured) SCUBA 850μm 1-σlevel

  4. CCAT sensitivity 5σ, 1-hour sensitivities for various instruments

  5. CCAT sensitivity 5σ, 1-hour sensitivities for various instruments

  6. CCAT sensitivity Confusion limit is 1 source per 30 beams and is calculated assuming CL is proportional to D-αwhere α=2 at 350μm and 1.2 at 850μm

  7. Dust Mass Sensitivity Dust at >30K and objects z<2 emission has a spectral index slope of ~2+β β=0 for a pure black-body, whilst β=2 for small ISM grains Taking β=1 compute the relative gain of CCAT for a given mass of dust compared with other instruments Relative to SCUBA at 850μm

  8. Mapping Speed Large area mapping speeds assuming the same dust mass sensitivity (relative to SCUBA 850)

  9. Field Mapping Flux limit versus area mapped assuming 10sec/pointing (no overheads)

  10. 1000 HERSCHEL 100 JCMT Cold cloud cores CCAT 10 HDF galaxies Angular resolution (arcsecs) 1 ALMA JWST 0.1 0.01 10 100 1000 Wavelength (microns) Angular Resolution

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