EddiCam: The Eddington Photometric Camera EddiCam Definition Phase Kick-Off Meeting J. Miguel Mas-Hesse Vienna, 17th Sept., 2001

EddiCam: The Eddington Photometric Camera

EddiCam Definition Phase Kick-Off Meeting

J. Miguel Mas-Hesse

Vienna, 17th Sept., 2001

Vienna, Sept. 17th 2001

EddiCam kick-off meeting J.Miguel Mas-Hesse

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Eddicam AGENDA

10:00 Welcome and introduction+ Status of Eddington project - Letters for interest and working groups - Conclusions of last Eddington Science Team meeting - Industrial studies: telescope and CCD characterization - Overall planning+ Eddington Scientific requirements+ Status of Eddicam design - Preliminar layout of camera unit+ ”Hot" engineering open questions+ Working Group organization. 17:00 AOB



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Eddicam

• Objectives of the meeting

– Organization of the EddiCam Working Group– Planning of activities– Identification of tasks and assignment of

responsibilities



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Eddicam

• Status of Eddington Project

– LoI’s and Working groups– Eddington Science Team meeting conclusions– Industrial studies– Overall Definition Phase planning



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Eddicam

• Eddington Science Team August meeting conclusions– EST to coordinate the activities of the different

WGs. – Main and most urgent task: to update scientific

requirements of the mission combined effort to analyze the need of colour discrimination.

– EST will be responsible for system trade-offs decided during this phase.



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Eddicam

• Eddington Scientific Requirements Update– Baseline contained in EDD/IN/210/SPE/01 draft

A (Feb. 2001) – Inputs for update required as soon as possible,

starting with primary mission inputs: main objectives of the mission and corresponding scientific justification



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Eddicam

• Status od EddiCam design

– Presentation by T. Muñoz



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Eddicam • “Hot” engineering open questions

– Color information

• Which color information? For both PF and AS ?

– Switchable frame transfer operation

– Mechanisms

– Straylight

– Thermal control

– CCD control and readout

– Low noise power supply

– DPU capabilities

– ......



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Eddicam • Working Group organization

– Scientific Team:

• At least one member from each participating institute

• For the Definition Phase, as many members as desired.

Number of Co-Is should be revised for Phase C/D, after official AO

• Main task: direct scientific advice on the design and trade-

off processes taking place during the Definition Phase

scientific requirements, acceptable descopings...

• Endorsed by the EST



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Eddicam

• Working Group organization – Technical Team:

• Engineers from the technical participating institutes

• 1-2 engineers per institute to become single point of contact, as local project managers or system engineers

• Coordinated by EddiCam Project Manager at INTA



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– Interaction with other WGs and ESA• EddiCam WG interfaces directly with the activities of the

other WGs at Eddington Science Team level, coordinated by the Project Scientist -Fabio Favata- through the corresponding Lead Scientists.

• A more direct interaction is guaranteed by the overlap in the different WGs: EddiCam WG members also participate to the 3 other WG activities.

• EWG interfaces with the ESA Technical Office, coordinated by the Study Manager -Anders Karlsson- through the EddiCam Project Manager and/or Lead Scientist.



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– Interaction with industrial studies• EddiCam Lead Scientist and Project Manager will take place

by default in the meetings and discussions taking place during the industrial studies.

• Other engineers from the EWG will be requested to participate when convenient.

• EWG + EST will agree the required trade-offs being decided during the insdustrial studies.

• Telescope study kick-off planned for early November. EWG opinion with respect to various options will be gathered by e-Mail in the meantime.



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– Planning• INTA to distribute as soon as available:

+ Draft index of EddiCam System Specification + Draft A EddiCam Scientific Requirements + Public technical info from the telescope study proposal

• Comments and suggestion provided back by EWG.

• 1 meeting of complete technical team every 3-4 months, or when required. Next meeting planned for end of January 2002. Scientific team will be also invited to participate. Splinter sessions to address specific questions.

• Bilateral meetings between INTA Project Office and local project managers/system engineers when required.



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– Planning• Optical concept frozen at the end of 2001

• Preliminar optical design available in early 2002

• Detailed optomechanical design available at the end of 2002

• CCD chips properties decided in Spring (if possible, before CCD study starts).

Before the Summer, all inputs (scientific and technical) should be available).

EddiCam detailed design will only start after Summer 2002.



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– Documentation• Web server available at LAEFF-INTA containing all documents

of interest. Presently public, restricted access in the future.

• INTA will distribute configuration requirements to homogenize documents and drawings.



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– Tasks distribution



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Eddicam Management INTA Global PM, System Engineering, PA, AIV, .....

Camera Unit - Global configuration INTA - Thermo-mechanical design INTA+DAPNIA

- Optical design (straylight, color, calibration...) CSL - Mechanisms (cover, frame transfer plates, focusing...) CSL - CCDs (definition, characterization, testing...)

LU+MSSL+DAPNIA+Corot

- Front End Electronics LU+MSSL

CCU/ROE MSSL+IMEC+DLR

- CCDs control - - Readout - - Digitization - - Microprocessor control? - - Data pre-processor? -



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Eddicam

PCE - Overall specification and design Austria

DPU - Specification (capabilities, functions, power, number of processors....) INTA - Scientific software specifications (algorithms,...) INTA - Instrument control SW and TM/TC definition

System - System end to end simulator INTA+Corot+MONS - System requirements -

Documents

EddiCam: The Eddington Photometric Camera EddiCam Definition Phase Kick-Off Meeting J. Miguel Mas-Hesse Vienna, 17th Sept., 2001