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Chandra      |             CC     XX XX    OO OO          | CXC
Electronic   |            CC       XXX    OO   OO         | Number 64
Bulletin     |             CC     XX XX    OO OO          | August
             |              CCC  XX   XX    OOO           | 2007
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Welcome to the Chandra X-ray Center's Electronic News Bulletin Number 64.

CXC Web site: cxc.harvard.edu

If you would like to unsubscribe from this alias, simply reply to this message
to let us know.  

Please use this website to update your address or email: 
          http://cxc.harvard.edu/cdo/udb/userdat.html

Contents:

1.  Data Reprocessing to Correct Recent Aspect Offset

2.  CHANDRA SCIENCE WORKSHOPS  

3.  Reminder:  Registration for Eight Years of Science with Chandra 

4.  Reminder: Cost Proposal Deadline for Cycle 9
 
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Item 1.  Data Reprocessing to Correct Recent Aspect Offset
==========================================================

We have begun to reprocess (Repro 3.1) all data obtained after  2006-Dec-10 
and processed on or before 2007-May-22. These data were subject to a 
systematic aspect offset of approximately 0.4 arcsec, believed to be the 
result
of a changed thermal environment following the procedure to cool the ACA
CCD from -15C to -19C that took place between late Nov-2006 and early
Jan-2007.  This error has been corrected in the newly processed version of
the data, which we expect to be complete within a few weeks. 
More information is available at:

http://cxc.harvard.edu/cal/ASPECT/celmon/

Belinda Wilkes  
Assistant Director
Chandra X-ray Center (CXC)



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Item 2.  CHANDRA SCIENCE WORKSHOPS
============================================


The CXC organizes Chandra Science Workshops on topics of interest
to X-ray observers and theorists alike.  Workshop goals are to
optimize Chandra science productivity by   
    * identifying science areas ripe for progress
    * identifying the most pressing scientific questions 
    * debating good Chandra strategies to answer them

Past workshops are listed at http://cxc.harvard.edu/cdo/past-conf.html

This year's Chandra Science Workshop on X-ray Grating Spectroscopy
was a great success.  Thanks to all participants!  You generated lots
of discussion about physics and modelling that spanned the usual
object-class segregation.  Abstracts and presentations have 
now been posted to  
    http://cxc.harvard.edu/xgratings07/agenda/abstracts.html

We are soliciting ideas for future workshops.
The scope of a workshop topic should be likely to generate between
50-100 attendees, and span 2-3 days duration.   If you suggest a meeting 
topic, please feel free to suggest some likely members of a Scientific 
Organizing Committee as well.

Paul Green
for the Chandra Director's Office


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Item 3.  Registration for Eight Years of Science with Chandra
=============================================================

Reminder:

Early registration for Eight Years of Science with Chandra ends August 31. 

http://cxc.cfa.harvard.edu/symposium_2007/

Dan  Schwartz 
for the Organizing Committee
              

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Item 4.  Reminder: Cost Proposal Deadline for Cycle 9
=====================================================


The e-letters including detailed results of the Cycle 9 peer review are being 
mailed to PIs this week. Those proposals which have been recommended for time
and have US-based PIs or co-Is are reminded that the deadline for submission 
of cost proposals is 13 Sept 2007, 6pm. For instructions and information please
refer to the Proposer pages on the CXC website and/or Chapter 8 of the Cycle 9 
CfP.

Belinda Wilkes
Assistant Director
Chandra X-ray Center (CXC)

              

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