1. CCD Detectors The CCD review was held on May 20th with Dan Fabricant as Chair, Mike Lesser, Gerald Luppino, Phillip MacQueen and Richard Reed on the committee. It was a very good review with a lot of input and options from the committee and attendies. Having listened to the committee and thinking about our needs and resources, we have decided to participate with University of Hawaii (UH) and Lincoln on Phase 3 of their CCD program. We will be requesting that CARA complete a PO with UH for $316,000. This will likely give us a yield of 16 scientific grade CCD20s. We would expect to receive these detectors in about January 1998 We have ordered a complete set of Leach-2 boards from SDSU for both the scientific and FC controllers. We are planning to build an interim mosaic of detectors using as many of the Phase 1 Lincoln devices as can be made available to us. We would plan to complete the mosaic with thick Orbit/Stover devices. The plan is to have this mosaic together and ready for testing in a dewar by the end of November 1997. The mosaic of science grade devices might be available in March 1998, but delay of these devices will not hold the project hostage. 2. Software Review This review was held on June 16th with Steve Kent as the chairman and John Cromer, Jill Knapp, George Jacoby and Al Conrad on the committee. This too was a great review... One major project issue that was determined as a result of preparing for this review is that the software for the instrument will not likely be completed before October 1998, making it one of the pacing activities. 3. CaF2 Delivery Problem We have not received the CaF2 for Element 3 from Optovac, nor have we received the replacement for Element 5 which has a fracture. We have been in frequent contact with Optovac and Sandy has visited them personally. Optovac has successfully produced two boules for this element, but both were destroyed in the process of generating them to size for Element 3. Since producing the last successful boule for this element, they determined that their furnaces that they were making the boules in was aging and unreliable. They have since replaced the furnace with three new ones, two of which are currently making boules from which they plan to make Element 3. The third furnace may also be used in order to better assure that we get one generated element. The earliest we expect the boules to be out of the furnace is September 17th. It will take approximately a month from that time to generate the element and deliver it to Santa Cruz. Given that timetable the earliest we could expect to have a finished lens would be mid January 1998. We have not yet determined a schedule for the replacement for Element 5. We did optically figure the CaF2 element we have with the fracture, and it does have the correct figure on both surfaces. The fluid couplant does wick into the fracture which makes it optically of little significance. Assuming the fracture does not grow and destroy the piece, the current element can be used until we replace with a unfractured one. We are exploring the possibility of using a different material if Optovac is unable to deliver the CaF2 for Element 3. A glass produced by Ohara appears to be a close match to CaF2 and we are investigating the effect to camera performance and the extent to which using this material would be a change in design of other elements. We have asked Ohara for a quote on this glass to determine the cost and schedule. 4. Camera Design Change We have decided to hire a consultant to help with the design of the camera barrel. The major reason is that Eric James is needed to work on ESI and that Alan Schier, who designed the ESI barrel, is available. Eric has completed much of the barrel and lens mount details, and Alan is expected to continue using as much of this design as is possible. However, it does offer the opportunity to have a second very qualified engineer review what has been done in detail and perfect the design. The schedule is a bit of a problem as Alan will not have much time to work on the project until mid August. This coupled together with Sandy's schedule would put the earliest possible date for the CDR review at mid-October and the completion of the lens cells and body in March 1998. However given other factors influencing the schedule, such as the detectors and the software effort, and the fact that the CaF2 effort is not assured to produce a fabricated part in January, this delay is not seen as the schedule driver. In any case the earliest possible date for the review is September 1997 given Sandy's schedule and the program Terry Mast is carrying out to better characterize the RVT joints. The extra cost to the project of having Alan Schier work on the design is estimated to be approximately $30,000, but as mentioned previously, we believe this will be money well spent. This money will need to come out of the contingency fund which currently stands at approximately $300K before this commitment. 5. Structure The structure is now rotating under instrument control and early testing indicates that the motion control is within the error budget. Bob Kibrick is developing a series of tests that Jim Burrous will carry out to verify that the motion is with tolerance. 6. Complete CaF2 Element 2 Element 2 is done and is the largest optically fabricated piece of CaF2 in the world. 7. Completed Field Flattener (actually 2) George Laopodis, the new optics technician at Lick completed the field flattner, and because the first one was slightly under diameter, fabricated a second. 8. Schedule Change At the end of the last quarter (April 97) we thought that we could reasonably expect to have DEIMOS commissioning on the telescope in the second quarter of 1998. At this time we see that the earliest we could be ready for commissioning would be in the last quarter of 1998. The reasons have already been covered individually, and are primarily the delayed schedule for the fabrication of the camera, the detector development effort running slower than previously scheduled, and that software will not be to the stage of development that we can commission until October 1998. The project is progressing well, with the grating and slitmask systems currently being fabricated. The slitmask system will likely be complete in September and ready for testing and the grating system in October. The TV system design has progressed to the point we have been able to see an image of the focal plane with the TV lens system in place. We have received the tent mirror and the collimator has been aluminized. We are currently planning to mount these optical components in DEIMOS in October then we should be able to start initial alignment. The dewar system is in the final design stage of design with the goal of having a completed mechanical system ready for testing in October 1997.