Design Review of SPICA-VIS

Date: July 23 and 24 2020 (afternoon only)

Board: John Monnier, Karine Perraut, Theo ten Brummelaar, Judit Sturmann, Frantz Martinache


Session 1: Management/System (July 23, 3pm CET)

  1. pptxScientific Requirements (Dmo, 10mn).
  2. pptxTechnical Requirements / Functional Analysis (Sla, 10mn) [SPICA_VIS_0004]
  3. pptxSchedule/Team/Funding (Pbe, 10mn)
  4. Discussions (30mn)

Session 2: Injection Table (July 23, 4pm CET)

  1. Implantation in the CHARA focal laboratory (Jde, 20mn) [SPICA_VIS_0007]
  2. pptxOptical study of the injection table (Jde, 20mn) [SPICA_VIS_0007]
  3. pptxMechanical study of 3 modules: Periscope/Rotation stage/Injection (Pbe/Cba, 20mn)
  4. pptxAlignment procedure, including STS-VIS (Sla, 20mn) [SPICA_VIS_0005]
  5. Discussions (40mn)

Closed Session of the Board (July 23, 6pm CET)

Session 3: Spectrograph (July 24, 3pm CET)

  1. pptxOptical study of the spectrograph (Cpa, 30mn) [SPICA_VIS_0007]
  2. Discussions (40mn)

Session 4: Software (July 24, 4:20pm CET)

  1. pptxControl Software Architecture (Fmo, 15mn) [SPICA_VIS_0001] [SPICA_VIS_0003]
  2. List of devices and servers (Fmo, 15mn) [SPICA_VIS_0002]
  3. pptxData Flow and Pipeline (Pbe, 15mn) [SPICA_VIS_0006]
  4. pptxSurvey management (Dmo, 15mn) [SPICA_VIS_0020]
  5. Discussions (40mn)


Doc Number

Document Filename















pdfSPICA-VIS injection table concept V03.pdf

SPICA_VIS_0008 docxSPICA-VIS-mechanicaldesign.docx



Participants: C. Bailet, P. Berio, F. Cassaing, J. Dejonghe, A. Domiciano, S. Lagarde, D. Lecron, A. Meilland, F. Millour, F. Morand, D. Mourard, N. Nardetto, C. Pannetier, F. Patru, K. Perraut, R. Petrov, S. Rousseau, A. Salsi, I. Tallon, M. Tallon

The goal of this progress meeting was to share among all actors the status of the developments on the different aspects of CHARA/SPICA and to establish our roadmap for 2020. For each of the main activities (SPICA-SG SPICA-FT, SPICA-VIS) we discussed also the various points requiring more studies.


SPICA-SG: Science Group activities

  •  Presentation Nicolas pdfNardetto_spica-atelierNov2019.pdf
  •  Discussion: The SG should also help in defining the required spectral resolutions for the Science programs. Sg will also have important tasks in 2020 for defining the strategies of observations and the methods for performing and monitoring the survey. It may be also interesting to check the work done by P. Cruzalebes for MATISSE in terms of source selection and strategy of night calibration.

SPICA-FT: Fringe tracker activities

  •  Situation of the development, First results on the Group Delay Close Loop in Nice, commissioning run in JanuarypdfStatusFT.pdf
  •  Continuation of the development of an optimized integrated optics chip: pdfVLC20191218.pdf
  •  Development of a Python simulator for performance analysis and future developments: pdfSPICAFT-Simulator.pdf
  •  Study of the R-H differential pistonpdfDiffSpectralPiston20191218.pdf
  •  Action list:different elements are given in the different presentations. The main aspects that will have to be covered in 2020 are the phase delay loop, the kalman filtering, and of course the establishment of performance (first commissiong run in January, second commissioning run end of may, third commissining run Fall 2020).

SPICA-VIS: Visible instrument development

In conclusion, various working meetings will have to be organized (in small groups) in the beginning of 2020 to write the specifications and define more precisely the work:

  • opto-mechanical design of the injection table; start of the detailed study.
  • high level specifications of the spectrograph table, predesign, detailed study.
  • definition of hte observing modes, calibration modes....
  • high level specifications of the instrument control software and of the observing control software
  • preliminary specifications on the required tools for the survey monitoring and execution
Aller au haut