Cosmic Origins Spectrograph Instrument Handbook for Cycle 17
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| Cosmic Origins Spectrograph Instrument Handbook for Cycle 17 | ||||
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6.7 Image Characteristics
Figure 7.1 shows an image of a point source obtained in ground testing. A 2-dimensional Gaussian fit to this PSF has the following characteristics:
FWHM (x-direction): 2.47 pixels = 58.1 mas
FWHM (y direction): 2.29 pixels = 53.8 mas
Fraction of light in brightest pixel: 10.1%.
Figure 6.1: Two-dimensional PSF for COS.
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Space Telescope Science Institute http://www.stsci.edu Voice: (410) 338-1082 help@stsci.edu |
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