Re: HST LRP assumptions about 9727 & 9728 execution in 2004

From: adam riess (ariess@stsci.edu)
Date: Thu Dec 11 2003 - 08:21:22 PST

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    Dear Schedulers,

       We (GO 9727 and 9728) have reviewed the orient/visibility
       requirements and various blackout times and we believe we
       have identified 2
       possible plans which we list below as option 1 and 2.
       Please analyze them and let us know which can work.
       We have a slight preference option 1 but we could do option 2 if that
       is better for you.
       
       Note because we need to do the fields at some integer
       multiple of 45 degrees (to match the GOODS imaging)
       and the orient range drops to +/-5 degrees after May 20,
       our dates are not very flexible.
       
       
       Each "search" corresponds to 15 orbits within a ~4 day period
       Thursday-Sunday. These are ACS orbits so SAA-impacted
       orbits are okay as long as we can get at least 2000 sec of visibility
       
       
       Option 1:
       
       Search 1: March 4-7 (this hits the end of the blackout but we
       understand may be fit into SAA impacted orbits)
       Search 2: April 15-18
       Search 3: May 27-30
       Search 4: July 8-11
       
       Option 2:
       
       Search 1: April 1-4 (or choice 2: April 8-11)
       Search 2: May 20-23 (or choice 2: May 27-30)
       Search 3: July 8-11
       Search 4: August 19-22
       
       
       
       Cheers,
       Adam
       

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