Chandra X-Ray Observatory
	(CXC)

CDA - Chaser Help

Data Analysis Links
CDA Status
  • The archive is fully functional.
Reprocessing Status
    Reprocessing IV has been completed in December 2014.
Current Software Releases
  • ASCDSVER: 10.13
  • CALDBVER: 4.11.5
What's New
  • Electrical Outage 11/05/21 - 11/06/21
    2021-11-05
    There will be a planned electrical outage Friday, November 5 2021, 5:30PM - Saturday, November 6 2021, 6:00PM EDT. During this time period ChaSeR and other archive interfaces will be unavailable.
  • Electrical Outage on 07/28/21
    2021-07-26
    There will be a planned electrical outage Wednesday, July 28 2021, 8:00PM - 10:00PM EDT. During this time period ChaSeR and other archive interfaces will be unavailable.
  • Downtime on 6/12/21
    2021-06-10
    Due to electrical work, the public interfaces of the Chandra Data Archive will not be available on Saturday 6/12 from 4 AM to 9 PM.
  • Repro V Begins
    2020-10-26
    The fifth major reprocessing of the archive (Repro V) has started! Details can be found here.
  • Past Notices
ChaSer: Search and Retrieval from the Chandra Data Archive

Chaser has been retired

The Java application Chaser was retired on 1 April 2013. All functionality and more now found in the web-based ChaSeR.

All Functionality and more now found in ChaSeR

ChaSeR has all of its former functionality with many new features, including:
  • Functions previously found only in (Java) Chaser:
    • lists of positions
    • search ranges
    • access to supporting products
  • Access to ERs

This page maintained by the Chandra Data Archive (arcops@cfa.harvard.edu).

Last modified: 2020-04-06

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