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Chandra Electronic Bulletin No. 23
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             |              CCC  XX   XX    OOO           |
Chandra      |             CC     XX XX    OO OO          | CXC
Electronic   |            CC       XXX    OO   OO         | Number 23
Bulletin     |             CC     XX XX    OO OO          | August
             |              CCC  XX   XX    OOO           | 2003
             |                                            |

Welcome to the Chandra X-ray Center's Electronic News Bulletin Number 23.

CXC Web site: cxc.harvard.edu

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1. CIAO 3.0 Released - 6 August 2003
2. 5th Chandra/CIAO Workshop - Cambridge,USA - 29-31 October 2003 

3. Chandra Fellows Symposium  - Oct. 8, 2003

4. Chandra Fellowship Competition 

5. Reminder of E/PO opportunity for successful Cycle 5 proposers

6. Measurements of the Chandra ACIS Contaminant using the LETG


Item 1. CIAO 3.0 Released - 6 August 2003

  The Chandra X-ray Center (CXC) is pleased to announce that version 3.0
of CIAO ("Chandra Interactive Analysis of Observations") and version
2.23 of CALDB are now available for download from:

  They will also be copied shortly on the European mirror site at:

  CIAO 3.0 is a major "infrastructure" release. Several libraries (most
notably the datamodel) have been completetly rewritten. Many CIAO
libraries are now accessible via S-Lang modules, which significantly
enhance scripting capabilities within CIAO. Also, CIAO 3.0 has been
ported to MacOS X, opening CIAO up to Mac users.

  CIAO 3.0 also introduces a number of new tools and provides significant
enhancements to existing software.
There is also a new Sherpa Web site (http://cxc.harvard.edu/sherpa/) and
a new layout for threads.

  The CIAO highlights page http://cxc.harvard.edu/ciao/highlights.html
provides additional details.

  For complete information on this release, please see the full Release
Notes (http://cxc.harvard.edu/ciao/releasenotes/)

  In tandem with CIAO3.0 is the release of the Chandra Calibration
Database CALDB 2.23
Release Notes are available at:

  Several tools require CALDB2.23 therefore it *must* be downloaded and
installed (or upgraded from an earlier version) to run CIAO 3.0.

  CIAO3.0 is distributed for the following platforms:
Solaris 8
Linux Redhat 6.2 and 8
Compaq Alpha/Tru64 Unix 5.1A
Mac OS X 10.2.6

  More details at http://cxc.harvard.edu/ciao/download/platforms.html

  As always please send questions and requests for enhancements to the 
CXC HELPDESK (http://cxc.harvard.edu/helpdesk/)

  CIAO3.0 is a collaborative effort between the SAO/CXC Science Data
Systems, the SAO/CXC Data Systems, and MIT/CXC personnel.

Antonella Fruscione (for the CIAO development team)

Item 2.  5th Chandra/CIAO Workshop - Cambridge,USA - 29-31 October 2003

              First Announcement
           5th Chandra/CIAO Workshop
             29-31 October 2003
    Chandra X-ray Center, Cambridge Mass, USA

   Following the success of the previous Chandra/CIAO workshops and the 
recent release of CIAO version 3.0 , the
Chandra X-Ray Center (CXC) is announcing the fifth in a series of
workshops aimed at helping users to work with the Chandra Interactive
Analysis of Observations (CIAO) software.

   CIAO is the CXC software developed for the analysis of Chandra data.
However, CIAO is non-mission specific (apart from a few instrument
tools). More info on CIAO can be found at http://cxc.harvard.edu/ciao/.

   This workshop will be based on CIAO 3.0  which was released on 6 
August 2003, or any software patch available at the time. A summary
of the features in the CIAO3.0 software can be found in the release
notes (http://cxc.harvard.edu/ciao/releasenotes).

   The fifth workshop will be held at the Center for Astrophysics in
Cambridge, MA (USA) on 29-31 October 2003. Further workshops will be
organized depending on demand.

   Details of the program will be sent to registered participants and
posted on the CIAO Workshop web site at http://cxc.harvard.edu/ciao/workshop

   The program will include:


Introductory and Advanced Talks on X-ray Data Analysis and Statistics
Calibration and Aspect Issues Related to Data Analysis
Beginner and Advanced CIAO talks and demos
Advanced sessions on specific topics: grating analysis, extended source
analysis, etc.


Workstations will be available for participants to gain hands-on
experience using CIAO on Chandra data.
Members of the CIAO team will be on hand to solve problems.
Sample Chandra data sets will be provided for attendees who do not have
(or do not wish to use) their own Chandra data sets.

   Potential participants may look at all the handouts made available to
the participants during previous workshops on the workshop Web site 
Handouts and Presentations page.

   We are working to allow the largest possible attendance and we are
expecting to accept the first 25 to 30 registered participants.

   If you would like to participate please use the online registration 
form at http://cxc.harvard.edu/ciao/workshop/

Antonella Fruscione and the CIAO workshop organizing team



            Oct. 8, 2003

Harvard-Smithsonian Center for Astrophysics

We welcome interested people to hear what the Chandra
Fellows have been doing.  Further details can be found from:


Nancy Remage Evans



The Chandra X-ray Center (CXC), is 
pleased to announce the seventh competition for 
the Chandra Postdoctoral Fellowship Program, in cooperation with  host
institutions throughout the United States. The primary objective of the
Program is to provide opportunities for postdoctoral research on problems
that are broadly related to the scientific mission of the Chandra X-ray 
Observatory and compatible with the interests of the Host Institutions. This
program is open to applicants of any nationality who  earn 
doctoral degrees between  January 1, 2001 and September 1, 2004 in astronomy,
physics, or related disciplines. The Fellowships are tenable at any U.S.
institution where Chandra-related research can be carried out.

The Fellowship is initially for two years, with the expectation of a
third year, contingent upon performance and available funding. Subject
to the availability of NASA funding up to 5  Chandra Fellows will be
appointed this year, through grants to United States institutions. 

The Call for Proposals for the Fellowship Program, which includes
detailed Program policies, application instructions, and forms, 
is available on the World Wide Web at 
Alternatively, the same information may be
obtained upon request to the above address.  
An application includes a cover form,                          
a research proposal, letters of reference,  a curriculum vitae, and    
other relevant materials as detailed in the instructions.   
Applications should be sent to the attention of Chandra
Fellowship Program Office at the address below.

The application deadline is 6 November 2003. The Chandra Fellow
appointments are expected to begin on or about 1 September 2004. Women and
members of minority groups are strongly encouraged to apply.

Chandra Postdoctoral Fellowships
Chandra X-Ray Center
MS 4
60 Garden St.
Cambridge, MA 02138

E-mail: fellows@head-cfa.harvard.edu

WWW: http://cxc.harvard.edu/fellows/Chandra_fellow.2004.html

Nancy Remage Evans  


Item 5. Reminder of E/PO opportunity for successful Cycle 5 proposers

US-based PI's with accepted Chandra proposals in Cycle 5 may submit a 
supplementary Education/Public Outreach (E/PO) proposal. 
The Office of Space Science is committed to fostering the 
broad involvement of the space science research community in 
E/PO. The Call for Proposals for supplementary E/PO propsals can be found at:  
Kathy Lestition


Item 6. Measurements of the Chandra ACIS Contaminant using the LETG

A new summary is available of contamination correction model that can be 
used in ISIS and in CIAO 3.0.  See:


Herman Marshall


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