Cosmic Origins Spectrograph Instrument Handbook for Cycle 17
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| Cosmic Origins Spectrograph Instrument Handbook for Cycle 17 | ||||
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6.4 TIME-TAG or ACCUM?
Most of the considerations regarding
TIME-TAGandACCUMexposures for NUV imaging are the same as for NUV spectroscopy; the reader is referred to Chapter 5 for a discussion. One difference is that, in contrast to spectroscopy inACCUMmode, no doppler correction is performed on the events in imaging mode.We caution that particular attention should be given to the expected count rate, since imaging mode is efficient and can lead to high count rates compared to spectroscopic observations.
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Space Telescope Science Institute http://www.stsci.edu Voice: (410) 338-1082 help@stsci.edu |
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