IMACS progress report no. 26 B. Bigelow 1 June 2000 1) Project Status Currently scheduled tasks: Status: a) Filter server assy/test (Guerrero) on sched. b) Disperser server (DSS) design (Bond) 2 mo. late c) Shutter assy/test 3 mo. late d) CF Guider mech. design (Hare) 2 mo. late e) CFG drafting (Poteete) delayed f) CFG fab. (Storts) delayed g) SH Guider design (Hare) 2 mo. late h) Mask server fab. (Kowal) on sched. i) Collimator mech. design (Bigelow) finished j) Coll drafting (Bigelow) finished k) Coll. fabrication (external) late start l) Long camera mech. design (Bigelow) started on sched. m) Dewar fab. (Luppino) 3 mo. late n) Science Array controller des (Burley) 5 mo. late o) Science Array fab (Burley) 3 mo. late p) Motion control (MC) electr. design (Carr) 6 mo. late q) MC fab. (Asa) 3 mo. late r) Control software design (Birk) on schedule Details: b) delayed by late finish of FSS c) delayed by late design and fab d,e,f) awaiting final optical design g) delayed by CFG design k) awaiting fab quotes m) late finishing fab - no schedule impact yet n,o) delayed by guide cameras - no sched. impact yet p) delayed by lack of manpower - no sched. impact yet q) parts ordered, should restart in July (Asa) Other project events: The filter server system (FSS) and shutter are operating and were demonstrated for the SAC meeting 5/21 - 5/22. See images on the IMACS website. Most of the dewar body and internal structures are now complete in Hawaii. See IMACS website for the latest images of the dewar. Joe Asa, currently a electrical engineering tech with the Magellan project, will join the IMACS project in July. Joe will be working with us part-time on fabrication of the motion controller, instrument electronics, and electro-mechanical assembly. 2) Optics (Sutin) 2.1) Collimator elements C02, C03, C04, the dewar window and the test dewar window have arrived from TORC. 2.2) All the coating contracts have been let. The CaF2 is going to Spectrum Thin Films, and the rest to Newport Thin Films. Both vendors want aluminum test blanks for some of the elements. It appears that going down to 0.34 microns will not be a problem. Newport has requested support from our engineers on handling the field lens. 2.3) Optovac (Corning) has decided (again) that they are producing no more large CaF2. This should only effect us if we break something. It will delay BINOSPEC somewhat if Dan F. hasn't ordered his boules yet. We are still waiting for our last short camera boule, which is probably being generated now. 2.4) One lenslet array for the Shack-Hartman has been ordered. Sadly, the one in the catalogue was incorrectly made, and has the wrong focal length. AOA will be making another master with the correct focal length, for both us and the telescope project. 2.5) The guider test setup awaits a guide camera. I can always move it up to the electronics lab, though. I will try to borrow a lenslet array from Magellan for testing. 2.6) Coating test samples have been sent to Harold Johnson for polishing. Optics TODO List: 1) Baffle analysis, baffle materials 2) TV camera designs 3) Filters 4) Asphere fabrication 5) Pupil simulator? 3) Electronics (Carr) No report this month. 4) Software (Birk/Clardy) Christoph: 4.1) During May I wrote the software necessary to control the HP-34970A Data Acquisition Unit. The HP-34970A can monitor up to 60 channels (temperature, pressure, etc). I also started on the science camera software, ie. the 'server' program that will run on the LINUX computer. This 'server' will control the arrays and send data (science pictures) to the Camera-GUI and real-time display running on the Sparc. 4.2) For June I plan to a) finish the filter-server control, b) continue with the camera-software and c) start on the mask-server software. Ken: 4.3) I have begun to adapt Chrostoph's guider GUI program to be used for interactive user control of the IMACS guiders. 4.4) It has been determined that the Telescope Control System will most probably be able to provide us a guider camera picture to enable our control program to highlight a star and pass back a cursor position. We will also get to set the guiding mode to active or open-loop, and request small telescope motions for slit-mask set-up. However, there is no specification of data format or communications protocol yet. 5) Mechanics (Bond/Hare/Bigelow/Luppino) Tim: 5.1) A filter server assembly jig was designed, fabricated, and assembled. The filter server itself was assembled on the jig, and the final wiring, plumbing, and alignment are taking place now. Once this is complete, it will be available for testing with software. 5.2) Design work is continuing on the disperser server mechanism. More specifically, the tilt mechanism for the gratings. Tyson: 5.3) The Camera Shutter has been assembled with linear motors at the preliminary integration and testing stage. Basic motion profiles are being developed and used to refine shutter operation. Some minor assembly procedures and motion troubles are being rectified. 5.4) Testing of the linear motors and related software has begun. As this work progresses further consideration will be given to the proximity sensor issue (for blade position sensing). 5.5) Work on the assembly drawing package is underway and will complete the shutter drawing package. 5.6) Future work on the shutter for the month of June includes assembly refinement and preparation of the shutter for software development. 5.7) Design of the center field guide camera motion stage is complete. Final design for mounting of the optics will commence on finalization of camera optics testing. 5.7) Future work on the center field guide camera includes further development of the solid model and continued opto-mechanical design. 5.8) Design of the Shack-Hartmann camera has begun. Stage and motor elements are currently being examined. Work on the SH camera will continue throughout the month of June. Bruce: 5.9) Fabrication of the slit mask server has started. The slit mask frames were due from Rettig Machine in May and are about a month late. 5.10) The collimator lens cell prototype parts arrived from BNL, and a trial alignment and assembly of the parts uncovered several fabrication errors. The parts will be fixed in June, and final assembly and bonding of of the test lens in the test cell will occur in June. 5.11) Design and drafting of the collimator doublet, singlets, barrel, spacers, and assembly tooling was completed in May. RFQ's for fabrication are out, and start of fabrication awaits as-built dimensions for the lenses, and a final update of the collimator optical design. A contract for fabrication should be let in June. 5.12) Epoxies, RTVs, colorants, fillers, primers, and release agents have started arriving, and preliminary samples have been produced. More materials are due this month, and final selections for epoxies and RTV's should occur by the end of June. Planned for this month: - let contract for fab of SMS base plate - let contract for fab of collimator mechanics - design of long camera triplet cells, singlets? Gerry Luppino: 5.13) Fabrication of the stainless steel Z-drive parts has begun. The outer pieces that form the vacuum seal are completed and will be sent off to be e-beam welded shortly. Z-drive should be attached to the Z-stage before we try to do the flexure testing. 5.14) The invar packages for the FC/guider chips have been fabricated and are in hand. When the PCBs for these chips are done, the packaging of the 2500x512 CCDs can begin and then they can be tested to select suitable quality devices for the camera. 5.16) Flexure testing should begin sometime in late June/early July subject to the convergence of Bigelow's and Luppino's schedules! 6) Detector Systems (Thompson/Burley) Detector systems progress (May 2000) ==================================== Guider cameras -------------- 6.1 - Steve Shectman has a version of his code running the guider camera at 4 frames per second. 6.2 - subrastering is now implemented in the dsp code. 6.3 - GB has started assembling four more cameras. Mosiac cameras -------------- 6.4 - the first housing for the controller electronics has been made in the shop, and the circuit boards all fit. 6.5 - the faceplate and sideplate for the test dewar were made in the shop, so we have been able to assemble the test dewar and put it on the vacuum pump. 6.6 - computers for the Keyence profiling system and for the ccd test system have arrived and are set up. 6.7 - GB is still working on the preamp board layout. 7) Other Business Next IMACS meeting: 2:00, Weds. 6/28/00, new conf. room. Progress reports included above. Meeting notes and action items: 7.1) Bigelow to add software task for science image acquisition and handing to science array tasks. 7.2) Bigelow to check with Carr regarding second motion control channel in current electronics for driving the SMS. 7.3) Delrin needs to be ordered for SMS fabrication - Kowel to order. 7.4) Sutin need specs for filters prior to ordering. Alan and Ian to review filter specs and provide to Brian.