Subject: Re: A comparison of different missions

From: Alan W Harris

Submitted: Thu, 10 Jun 2004 22:14:55 -0700

Message number: 228 (previous: 227, next: 229 up: Index)

At 07:34 PM 6/10/2004, Michael Strauss wrote:
>Hello all,
>   As we discussed in the phonecon today, we wanted to include in the
>SWG document a simple summary/comparison of various of the proposed missions
>which address the LSST science goals.
>...............
>As I indicated, I am eager to get to closure on this, so *please* respond 
>in the
>next 24 hours.

Excellent quick response addition.  I have only a couple nits to pick.  In 
the abstract, you state the 8.4m-LSST has a three-degree FOV, but in the 
talbe you state 10 sq. deg.  In the telecon today, Tony indicated that the 
10 sq-deg design has been adopted.  You should be consistent and give the 
corresponding linear diameter in the abstract (or state in terms of sq. 
deg. both places).  I worry that throughout the report we may have results 
stated based on the 3-deg design, so there is the potential for small 
inconsistencies throughout.  It might be better to stae up front that the 
report was written on the basis of a 3-deg FOV even though now a 3.5 deg 
FOV is the nominal design.  My only other small quibble is on p. 2, you 
state the target date for completing the "Spaceguard Goal" is 2010.  The 
target date nominally accepted is 2008.  There's a fairly long story behind 
the choice of this date, but it suffices in the introduction to simply 
state it, but should be correctly given.

A more general matter is the statement on p. 3, 4 lines up from bottom, 
"...and to assess whether these drivers will remain compelling over the 
timescale that such a facility could be built."   I think this is an 
excellent "sound bite" statement of the work ahead, as opposed to the 
content of the present report.  Perhaps some words to make that distinction 
clear would be in order.

Cheers,

Al

*******************************************************************
Alan W. Harris
Senior Research Scientist
Space Science Institute
4603 Orange Knoll Ave.          Phone:  818-790-8291
La Canada, CA 91011-3364        email:  harrisaw@colorado.edu
******************************************************************* 


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