Minutes of the 3.5-m User Committee meeting on March 10, 1997. Present: Turner (chair), Walterbos (minutes), Hobbs, Stubbs, Gillespie, Secker, Uomoto 1. Instrument fixes and upgrades. New improvements management structure has been setup; 3-yr plan and urgent fixes are two separate categories. Stubbs is in charge of supervising activities for the 3-yr plan within the established time table. Klaene will have similar role for urgent repairs on the mountain. Weekly teleconferences between parties involved (alternating between 3-yr plan and on-site fixes) will be used to manage and coordinate this. APO mail exploders are good place to provide input to this. People should still jump in and help, and volunteer for that. You can send e-mail to find out on status of various issues to: techstaff@galileo.apo.nmsu.edu. Users can also just call the site. Also checking day and night logs is a good place to get information. E.g. work on instruments will be logged in the day logs. 2. WSMR test last week was successful. Telescope tracked target meeting their requirements. WSMR participation is helpful to completion of 3-yr plan objectives. 3. SPICAM. Software redone, previous manual is obsolete. It is the intent to make this a regularly scheduled instrument in Q2. Two filterwheels will hold 6 filters each, 3"x3", adapter for 2"x2" is being worked on. Thickness up to 12 mm or so OK. Filterset: UBVRI procrured, permanently mounted in wheel 1. So other filters will be installed in wheel 2. Sloan filter set still to be decided upon. No narrow-band 3"x3" available, but several institutions have 2"X2" narrow-bands. Alan has some moderate-band 3"x3" filters. We need to make a full filter inventory for the 3.5-m. 4. Computer problems. Intermittent dropout in communications between telescope control computers and others. Seems to have been fixed now. Another problem: operations control computer system shows more problems than before shutdown. Perhaps due to upgrade of operating system on MC. Fowler is trying to find origin of problem. 5. Focus shifts: primary mirror's ventilation system changed since shutdown. Also temperature shifts seem to cause problems; perhaps due to new sensor system that uses sensors in different places. Calibration used by software to adjust focus may need to be recalibrated. 6. Schedules for Q2. Scheduling is working less well, because number of requests for specific slots is growing. There is often overlap between different observers requesting for same slots. Lower ranked proposals are therefore not very well scheduled, if at all. Possible modification: request only 2/3 or 3/4 of the time and declaring rest open time. For example, current Q2 schedule has 15 unscheduled half nights due to unschedulable time. Or have everyone give 2/3 request and then they receive back 1/3 which they schedule themselves. Discuss this with schedulers. Engineering time: 3-yr plan activities may lead to bumped observers, because things cannot be scheduled 3 months in advance. We ask for the indulgence of the users, to make things better in optimum ways. 7. CHAOS update: laser is scheduled to be taken off after April run. Prospects after that are unknown. Echelle testing on the testing may start later this year, into fall quarter. 8. Dormitories: relax 5-day warning for reservations to 2-day warning. Policy is: you take what you get if you give less than 2-days (could be Sunspot or trailer accommodation). 9. Closing criteria: up to Observing specialist, not to the observer. Harassing the telescope specialist is not allowable under any circumstances. This includes not asking every 15 minutes about the status. Let the telescope specialist know where you are, and they will contact you. Specific written policy will be posted on Web. 10. Dust monitoring system in place now. Needs to be calibrated to translate it into actual conditions required for shut down because of dust. Issues include: how easy can certain dust particles be cleaned off. Snow conditions lead to unavoidable closure, if snow is on the roof. Are looking into upgrading roof heating system to melt snow off as it falls. Dome is difficult for dealing with snow removal (flat roof, telescope has fixed orientation with respect to slit). 11. Minutes of last meeting approved. Next meeting will be on 04/14/97. APO APO APO APO APO Apache Point Observatory 3.5m APO APO APO APO APO This is message 135 in the apo35-general archive. You can find APO the archive on http://www.astro.princeton.edu/APO/apo35-general/INDEX.html APO To join/leave the list, send mail to apo35-request@astro.princeton.edu APO To post a message, mail it to apo35-general@astro.princeton.edu APO APO APO APO APO APO APO APO APO APO APO APO APO APO APO APO APO