Jul 4th 2005
Size (FWHM) of the continuum image of Tempel 1 (near 470nm) measured from
slit profiles of UCLES observations on July 4th, showing the expanding dust
cloud following impact. The slit was oriented at PA 21.4 (perpendicular to
the Sun vector). Image sizes have been corrected for seeing based on observations
of standard stars. The last three observations have much higher uncertainty
as there was much less light in the slit, and the observations were at high
airmass. The data show a linear increase in FWHM of about 0.74 arcsec/hour
(corresponding to an expansion velocity of about 480 km/hr). Observer: Jeremy
Bailey (Australian Centre for Astrobiology, Macquarie University).
Comparison of CN band specta before (blue) and after (red) impact. The
post impact spectrum was obtained at 8:00 UT on Jul 4th
with the pre impact one at 8:14 UT on Jul 3 both with a total exposure
of 3000 seconds. UCLES on the 3.9m Anglo-Australian telescope configured
identically for both spectra. Wavelength range 3860-3890A. Observer: Jeremy
Bailey (Australian Centre for Astrobiology, Macquarie University)
Jul 3rd 2005
Uncalibrated spectrum of the CN band in Comet Tempel 1. Wavelength range
3860-3890A. Resolving Power 43000. Observed with UCLES on the 3.9m Anglo-Australian
Telescope 8:14 UT on Jul 3 2005. Observer Jeremy Bailey.
Deep Impact Workshop (Sep 6th 2004)