Minutes -- AG Hardware and Software AIP/MPIA ------------------------------------------------ Meeting: 30/10/2002 8:30-15:30 MEST Participants: Potsdam: Jesper Storm (JST) Guenter Moestl (GMO) Felix Kraemer (FKR) Thomas Fechner (TFE) Heidelberg: Peter Bitzenberger (PBI) Hermann Boehnhardt (HBO) Florian Briegel (FBR) Minutes by: H. Boehnhardt (20/11/2002) Topics: ======= (1) AG hardware (HW): JST explained principles, concept, design and actual implementation status of the AG hardware as developed at the AIP. Relevant key points for the future HW/SW collaboration project are: * AG types and institute commitments: - LBT needs in total 8 AG of the AIP type or similar, 2 AGs for Cassegrain foci and 6 for Nasmyth foci AIP has an in-kind contract for 2 such AGs and will build additionally two off-axis only units for the PI instrument PEPSI. - AGs for MODS (Cassegrain foci) should be conceptually similar to AIP type and will be provided by instrument project no information exists at AIP and MPIA on these AG types - AGs for prime foci are of conceptual different type from AIP one and will also be provided by instrument project no information exists at AIP and MPIA on these AG types * AG HW specs: - CCD camera mounted on swing arm - AG mounted to rotator of LBT, positioning in field of view through 'telescope rotation + swing arm angle + linear positioning of AG arm' - electronics control via PMAC control box and linux PC - positioning velocity: 20mm/s max., resolution 15mu (0.026") - opto-mechanics and electronics design at AIP - CCD HW+SW procured from Leach (San Diego State Univ.)/US, already delivered. LBT SW should be based on Steward Observatory SW which currently is Windows based. Should be ported to Linux. Mike Lesser claims this is straight forward, but a commercial library is needed for Linux. - AG motion stage procured from Feinmess Dresden delivery expected for Jan. 2003 - controller and low level SW (drivers) for operations will be done at AIP - vignetting and positioning range in foci field of view only partially * Delivery date of first Ag unit to LBT is end of 2003 * visit of AIP workshops, offices and existing AG HW * AG HW key personnel at AIP: Guenter Moestl (electronics, software) Thomas Fechner (CCD electronics, software) Felix Kraemer (SW, Motor control, PMAC-Linux interface) Dieter Wolter (HW, CCD controllers, PMAC cooling) Ulfert Hanschur (electronics, motor control?) Jesper Storm (Project Management) (2) AG software (SW): described by HBO * First Kick-off - AG high level SW and telescope/instrument interface SW tasks accepted by MPIA as in-kind LBT contribution in total 3 MY in 2 years assumed AG SW development to be started in Jan. 2003 - MPIA/LBT SW group meeting on development and environment for SW LBT held on 24 Oct. 2002 LBT SW will use remote procedure calls (multi-thread capability necessary) and reflective memories * AG SW key personnel at MPIA: Hermann Boehnhardt (project management) Florian Briegel (SW development) Recruitment for 2 more SW developer for both MPIA LBT SW tasks is currently under way TBD, one of them will be assigned with AG SW (3) AG SW functional requirements: from a discussion of the meeting participants the following functional requirements for the higher level SW control are identified. This list may be incomplete and serves as a starting point for further work and discussions * AG function to be controlled/supported by SW: - Autoguiding process + pick guide star (filter control, guide star catalogues, user defined guide star, operator selected guide star) + autoguide on guide star (integration, windowing, image transfer& display, telescope corrections, differential velocity for moving targets or slewing observations, sampling, bad pixel mask) + focussing (focal field curvature compensation, filter focus offsets) + combined telescope/guide probe off-setting + AG initialisation + collision control, vignetted field control + AG orientation with respect to instrument and telescope + sky quality monitoring (seeing and transparency from guide star, AG image storage) + house keeping data (temperature, water flow, voltage, current) + AG commissioning and calibration + autoguiding simulator + telescope pointing model support - Wavefront sensor (WS) functions to be controlled/supported by SW: + WS CCD parameters (integration, windowing, sampling, bad pixel mask) + active optics correction matrix + WS initialisation + house keeping data (temperature, water flow, voltage, current) + WS commissioning and calibration + WS simulator (4) Action items A1 JST 25/11/2002 provide high level design and concept drawings of AG HW to MPIA A2 JST 25/11/2002 provide existing descriptions and design documents of AG HW and low level SW to MPIA A3 JST,HBO 30/11/2002 exchange list of project people and responsibilities (including email and phone) A4 JST,HBO 31/01/2003 define requirements for star and atmosphere simulator A5 JST 15/12/2002 provide list of low-level SW commands and parameters for AG to MPIA (if possible with error status list) A6 FBR 20/12/2002 provide list of basic functionalities, commands and parameters for high level SW control of AG A7 JST 28/02/2003 provide first SW procedures and error protocol for low level SW A8 HBO,JST 31/01/2003 clarify schedule for AG HW/SW integration and testing before delivery A9 HBO,JST 30/11/2002 clarify focal plane interface and collision risk for AG A10 HBO 20/12/2003 get required information for AG interface and concept of MODS and prime focus instruments