DEIMOS TEAM MEETING
Date
04-03-01
Attendees: Sandy Faber, Dave Cowley, Dave Hilyard, Carol Harper, Chris Wright, Vern Wallace, Jeff Lewis, Jack Osborne, Matt Radovan, Barry Alcott, Bob Kibrick, Drew Phillips, Greg (via phone).
1. Next Meeting:
Monday, April 16, 2001, 1:30 pm
2. CCDs, Mosaic, Controllers, etc.
The dewar is in the instrument, is cold, and is working.
Kirk is measuring overhangs on lot 14 chips as we speak (Kirk is not here at this meeting).
Controllers: Bob and Drew are questioning the performance of the 3-B amplifier. Drew says it's not imaging well; it is streaking out in X. Drew did all the imaging in 8-amp mode.
Per Chris, the controllers are all functioning and working, except for one phenomena which results in long term drift of video. Chris will look at this week.
3. Software (Bob)
The programming on the serial part of the Piezo, HP, and barcode is finished. They're coming across the street but we need the correct cables. The cables are made already per Barry. Bob wants these three things installed in the instrument so they can be tested.
The power PC boards were received yesterday from Motorola. Bob will configure and swap with ones in VME crate today or tomorrow. He'll then check to see if the problem is solved.
Will is working on the rotation system, and this should be done by the end of the day. He needs access to the instrument at 4:00, left balanced, and under keyword control. A schedule is needed on the whiteboard to assist with this sort of thing.
Recent work includes getting the infrastructure in place so some code can be re-worked. He hopes to begin some simple tests under keyword control by tomorrow. More tests will be done next week.
Steve and Bob have finished the merge of the CCD code, and they are most of the way done. They hope to have the keyword library done this week.
De is currently working on the DS9 and GUI issues. There will be a new version of DS9 this week. De is making engineering GUI changes now.
Dean is working on slit mask software, and though his time is limited, he is doing as much as possible. He will be out sometime this month for at least a week due to surgery. The software meeting will address this issue today.
Dean has not started on the grating select software yet, but he will in another week.
The goal is for the slit mask controller is to go in tomorrow evening. Should we take the board out of Dudley and put in controller #2 or get one immediately from Galil?
Keck will be here for a software meeting one week from today.
4. Electronics (Barry)
Carol and Chris did some cable testing this last week. They have some images of this.
Carol had some questions on desiccant in the PXL camera. Issues will be dealt with in Hawaii (they have a maintenance procedure).
Alarms for motion and movement have been installed. When people work remotely on rotation, a buzzer will buzz and light will come on as a warning.
Barry put an Electronics punch list on the web and emailed the "Deimos-work" list.
Clear covers were made for the FC controllers-they were needed for the science controller to prevent things from falling in and shorting out the electronics.
The rotation stage is now usable by both manual and software control.
The rotation fiducial is installed and tested.
Initial tuning has been done on rotation stage.
A manual paddle is in use. It is interlocked with the band clamp.
Ken wrote test software for grating slider stage.
Carol has written test software for the slit mask stage and is working with Dean on this.
Ted is working on the AC wiring for the cradle portion of the instrument.
Ted is also working on the panic button wiring.
The second (original) DMC-1920 card has been sent back for I/O upgrade.
The second DMC-1920 connector panel is being wired.
Carol is working on CCD cables.
Carol will retune dewar filter wheel stage this week.
5. Optics
Dave received two more epoxies, so he now has ten to cement candidates. He also received the 2" square Schott filters, and he will be testing these this week. Criteria for cement was discussed as follows: wavefront, deformation, ease of use, clean joints, control of thickness, and temperature cycling.
Cleveland is resubmitting a quote for coating the front window.
6. Mechanical
Nose Area:
There was a meeting last week on this grating and slit mask access. Sandy wrote a draft memo and will submit to Dave Sprayberry. Maintenance and replacement procedure notes are needed.
Dave thinks we should pull DEIMOS back off kinematics for the grating exchange, since it won't be often.
Slit Mask:
Vern says we need minor realignment for testing. Plungers are on order and should be arriving in a couple weeks, by mid-month.
We are dropping off slider #1, so would the clearance be affected? Vern needs to talk to Jack about this. Ultimately Jack thinks there won't be anymore clearance as a result.
De met with others and thinks we can run the mill from software.
Vern says the "alumi-brite" failed miserably in testing last week, so we won't use it.
Calibration System:
Calibration lamps: we have no pleasant way of replacing this. We need to consider a quick release. The problem is we have limited space. Is there space on side B? We will talk more about this next week. The quartz lamp issue is still open, but postponed as access issues are pending.FC Light System:
The fibers are not in yet, but when do we need these in? To be discussed further next week.Cladding:
Matt Thompson has been working on this all week. A lightweight material is being used for the barrel. He is continuing the baffling on the electronics ring and the barrel.Glycol Cooling:
We have quotes for hoses, and Dave needs them as soon as possible. Vern needs measurements from Jeff to write up this order, as he needs the hoses to go to the Guider.Air System:
Jeff ordered major parts for the panel.Interface Panel:
There is a design project for Jeff to discuss with Barry.Grating System:
Slider #2 and #4 are now installed. Jack is making sure all clear, and he's parking at 4 rotations to see if the computer can handle. The clamping software will be checked.
Concerning the covers for 3, 4, and 5, the parts are almost done.
Dave says that the highest priority right now is that the proper components are installed - no more clamps and such.
Flexure:
Measurements were taken, and the results were surprising. On March 8, the Cohu was in and the slit mask and slider #2 were tested with the dewar weight on. 10-13 pixels peak to peak was seen (and this was after grating box was on). There was 8-10 pixels peak to peak on the camera. With slider #3 in the camera there was 15 pixels peak to peak - the mirror has more motion. The subtraction of slider #3 minus the camera =10 pixels in one direction and 3 pixels in the other direction.
There is a drive to put the instrument together properly, especially the grating system and slit mask.
We need to arrange a meeting so we can summarize facts for Greg that he can focus on. Overall, we think that something is loose, so the images are circular to ellipsoidal. The grating box has helped some.
Instrument Trolley System:
Vern and others had a teleconference with Kyle and exchanged drawings and talked about other issues. Keck will get platform measurements to us, and Vern has started the layout. The material for the track came in.
Every two weeks there will be a teleconference. The next meeting is scheduled for Wednesday, April 11, 2001 @ 8:30 Hawaii time. There is another teleconference on Tuesday the 10th @ 11:30 via the phone in engineering.
TV System
We could install this but there will be no coolant until the end of the month. We have to mount the full mirrors. Will we need a slit design? Long slits, width, how many will we need? The other focal plane mirror is done. The alignment fixture is not done.
Dave proposes we put in the mirror but align later. The long slit mirror will take some time, and he says to push it back to the testing period, like in May or June.
Electronics requires a "SCSI to fiber the translator box", but Rich didn't have any spares. Greg will follow up with Rich. Will it be available when we need it?
Greg will also ask Hilton about the guiding software.
7. Alignment
Nothing new.8. Testing
Bob wants back to back CCD readouts sometime this week.9. Site Report (Greg)
There will be some personnel changes. Jim Bell is gone from DEIMOS, and is being replaced by Kyle.
Grant Tolleth is the new EE.
Bill Mason wants to join the teleconference on the 10th. He is interested in the site visit comments, and Dave plans to respond to them before this time.
Are they any changes in the review dates? The Readiness Review is in mid-May, and the Pre-ship will be at the end of June.
LRIS B team: The Pre-ship for new blue camera is mid-June or July.
Deliverables list is needed - Dave will take 1st stab next week.
LRIS collimator mirror coating (the new silver coating process at Lawrence Livermore) - looks good! Some pinholes, but could be improper preparation of optics. Greg thinks this cost $60K. There was a $30K minimum a year ago.
10. Web Report (Heather)
Keep Mark updated on picture situation! Also made some changes per De. Drew sent Heather a link he wanted added, but needs to show Heather where to add it (when he gets a chance).11. Shipping/Travel
Matson: The PO is getting written for 24' container and flat rack, figure out where to put it = will speak with Jeff. Needs to arrive June 1.
Jerry is working on the main crate for shipping DEIMOS and the camera. He doesn't think the camera can be shipped assembled. We may have to send a team out in mid-September to assemble the camera. Dave H. and Vern would work in the lab on this assembly.
Sandy sent an email to Dave who needs to get back to a Navy contact as Action Item for camera. Thursday, 11am is a travel meeting with Maureen.
12. Schedule
Engineers: Please spend 15 minutes to make a list of what needs to be done before the reviews. Dave Cowley needs this checklist.
Minutes written by Heather Mietz, email: heather@ucolick.org