Special Call for Proposals to Observe
Comet Tempel 1 Deep Impact Event
Keck Observatory, Gemini Observatory and Subaru Telescope
This is an open call to the world astronomical communities to observe the Deep Impact event on
Comet Tempel 1 in July 2005, using the most powerful telescopes and instruments currently available.
In support of the Deep Impact mission to intercept Comet Tempel 1, windows of Director's Discretionary
time have been reserved on the Keck I & II, the Gemini North & South and the Subaru Telescopes.
These windows (corresponding to times before, during and after the impact) are:
For Keck, I & II, the night of July 3rd
For Subaru, the night of July 3rd
For Gemini North, the nights of July 2nd, 3rd, and 4th
For Gemini South, the nights of July 3rd, 4th and 5th
[The encounter time is currently scheduled for 06:10 4 July 2005 UT, which is 20:10 July 3rd in
Hawaii. These times could move slightly later. This timing means that the comet will have set as
seen from Chile, and the impact itself will not be observable there. ]
Keck has reserved only the night of impact itself for the high resolution spectrograph,
HIRES on Keck I, and the near infra-red spectrograph, NIRSPEC on Keck II.
All capabilities currently available on Gemini (except GNIRS and GMOS-South) and Subaru
are offered. Selection of the instruments will be based on the proposal's scientific merit
and coordination between the observatories.
The three observatories are inviting joint or individual proposals to all three
facilities. Proposers should be aware that the observatory Directors will coordinate the
efforts to provide the most complete coverage of the event and to exploit their respective
observational strengths. Data from all observatories will be made public immediately after
completion of quality assessment.
All proposals can be submitted directly to all (but at least one) of the observatory sites: