All Versions of the VLBA OSS

The VLBA Observational Status Summary (OSS) is a comprehensive description of the VLBA instrument and typically is updated preceding each Call for Proposals.  The following table provides links to the versions appropriate to recent observing periods.

Only the current version, at the top of the table, is suitable for proposing and planning future VLBA observations.  Older versions are maintained to support scientific research based on archival VLBA observations.

Observing Period
Proposal Deadline from to OSS Version
Jul-2024 Feb 2025 Jul 2025 2025A
Feb-2024 Aug 2024 Jan 2025 2024B
Aug-2023 Feb 2024 Jul 2024 2024A
Feb-2023 Aug 2023 Jan 2024 2023B
Aug-2022 Feb 2023 Jul 2023 2023A
Feb-2022 Aug 2022 Jan 2023 2022B
Aug-2021 Feb 2022 Jul 2022 2022A
Feb-2021 Aug 2021 Jan 2022 2021B
Aug-2020 Feb 2021 Jul 2021 2021A
Feb-2020 Aug 2020 Jan 2021 2020B
Aug-2019 Feb 2020 Jul 2020 2020A
Feb-2019 Aug 2019 Jan 2020 2019B
Aug-2018 Feb 2019 Jul 2019 2019A
Feb-2018 Aug 2018 Jan 2019 2018B
Aug-2017 Feb 2018 Jul 2018 2018A
Feb-2017 Aug 2017 Jan 2018 2017B
Aug-2016 Feb 2017 Jul 2017 2017A
Feb-2016 Aug 2016 Jan 2017 2016B
Aug-2015 Feb 2016 Jul 2016 2016A
Feb-2015 Aug 2015 Jan 2016 2015B
Aug-2014 Jan 2015 July 2015 2015A
Feb-2014 Aug 2014 Jan 2015 2014B
Aug-2013 Feb 2014 July 2014 2014A
Feb-2013 Aug 2013 Jan 2014 2013B
Aug-2012 Feb 2013 July 2013 2013A
Feb-2012 Aug 2012 Jan 2013 2012B
Aug-2011 Feb 2012 July 2012 2012A
Feb-2011 July 2011 Jan 2012 2011B
Oct-2010 Jan 2011 May 2011 2011A
June-2010 Sept 2010 Jan 2011 2010C
Feb-2010 May 2010 Sept 2010 2010B
Oct-2009 Feb 2010 May 2010 2010A
Oct-2008 Feb 2009 May 2009 2009A

 

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