CAS ASA upd update tes 2018 2018 Recent Progress and Future - - PowerPoint PPT Presentation

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cas asa upd update tes 2018 2018
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CAS ASA upd update tes 2018 2018 Recent Progress and Future - - PowerPoint PPT Presentation

Sep 20, 2022 251 likes •404 views

CAS ASA upd update tes 2018 2018 Recent Progress and Future Plans of CASA and Pipeline Takeshi Nakazato (NAOJ) on behalf of CASA and Pipeline teams CASA clean/tclean mosaic issues Announcement to ALMA users

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CAS ASA upd update tes 2018 2018

Recent Progress and Future Plans

  • f CASA and Pipeline

Takeshi Nakazato (NAOJ)

  • n behalf of CASA and Pipeline teams
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CASA

clean/tclean mosaic issues

  • Announcement to ALMA users

https://almascience.nao.ac.jp/news/public-announcement-of-casa-imaging- issues-affecting-some-alma-products

  • See NAASC Memo 117 for technical detail

http://library.nrao.edu/public/memos/naasc/NAASC_117.pdf – Mosaic Issue #1: 7m-array data, Cycle 1-4 (< 5.1.1) too high flux density due to non-optimal definition of the PB – Mosaic Issue #2: both 12m- and 7m-arrays, Cycle 5 (5.1.1) aliasing due to wrong use of truncated PB for visibility gridding – Basically the problem is incorrect modeling of antenna primary beam – Based on the analysis using simulated data, those issues have gone in the Cycle 6 release (5.4.0)

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CASA

Common Astronomy Software Applications (CASA) and ALMA Pipeline

  • A data reduction and analysis software of data observed by radio

astronomical telescopes, both interferometer and single-dish

  • Developed in collaboration with NAOJ, NRAO, ESO, ASIAA and IDIA
  • CASA officially supports ALMA, VLA, Nobeyama 45-m, and ASTE
  • ALMA Pipeline is developed on top of CASA
  • All ALMA PI data are processed by CASA and Pipeline before delivered to
  • bservers and processed data are archived
  • The latest CASA release is 5.4.0 (for ALMA) and 5.4.1 (for VLA)
  • Schedule of next year:

– CASA 5.5 (February 2019) – CASA 6.0 (April 2019) – first Python 3 release – CASA 5.6 with Pipeline for Cycle 7 (July 2019)

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CASA

CASA Progress (as of 5.4.0)

See https://casa.nrao.edu/casadocs/ for detail

Interferometry/General

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CASA

CASA Progress (as of 5.4.0)

See https://casa.nrao.edu/casadocs/ for detail

Single-Dish

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CASA

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CASA

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CASA

Support of Nobeyama 45m and ASTE

  • Pipeline (and underlying CASA) successfully processed NRO 45m

telescope data. Improvement ongoing.

  • Data reduction test using ASTE data is ongoing

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CASA

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CASA

Priorities for CASA 5.5/5.6

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CASA

Major Development Activities

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CASA

CASA 6

  • Compatible with Python 3.x (development based on 3.6)
  • Modularization: CASA Tasks and Tools
  • Enable collaboration with Jupyter Notebook
  • Migration schedule

– CASA 6.0 (April 2019) – compatible with CASA 5.5 – CASA 5.6 for Cycle 7 (July 2019) – CASA 6.x & CASA 5.x dual release (January 2020) – CASA 6.x only for Cycle 8 (July 2020) – deprecate 2.7 based CASA

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from casatasks import tclean from casatasks import sdbaseline from casatools import ia

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CASA

Interaction with Users

  • CASA Liaison
  • CASA Newsletter

– twice a year

  • CASA User Survey

– ~100 replies – ~10 from Asia

Your feedback is greatly appreciated! https://casa.nrao.edu

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