On the Comparative Performance of an 8m NGST and a Ground Based 8m Optical/IR Telescope
نویسنده
چکیده
The potential 1-20 m imaging and spectroscopic sensitivity of a cooled 8m NGST in space is compared to that of a 8m ground-based telescope. For 2.5 m an 8m NGST may achieve a signal-to-noise ratio (SNR) advantage in the range 100 to 1000 for both imaging observations and for spectroscopic observations up to R=1000. In the 1 to 2.5 m regime an 8m NGST may achieve a SNR advantage for imaging of 10, while for spectroscopic observations the SNR advantage is expected to be substantially less and could approach unity for R 1000.
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