Fig. 2
Reconstructed image of the H i Lyα light from the comet C/1997 H2 as observed at 8.48 R⊙. The horizontal axis represents the position (expressed in arcsec) along the UVCS slit. Each bin in the vertical direction is given by the product of the single exposure time and the comet velocity in the plane of the sky. Courtesy of S. Giordano.
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