APO 3.5-m Users Committee Phonecon, 10/21/13 Attending: Suzanne Hawley (and for Scott Anderson), Mark Klaene, Joanne Hughes Clark (Seattle Univ.), John Wisniewski (Univ. of Oklahoma), Jeff Bary (Colgate, for NAPG), Mike Crenshaw (Georgia State), Rene Walterbos, Jon Holtzman, John Bally, Mary Beth Kaiser, Dave Bowen (for Michael Strauss), Bill Ketzeback, Joe Huehnerhoff, and Bruce Gillespie Absent: Remy Indebetouw, Al Harper ********************************** Introduction of new Users Committee members: Suzanne welcomed the newly appointed Users Committee members from several of our new leasing partners. They are: o Jeff Bary - Colgate University, representing the Northeast Astronomy Participation Group (NAPG members are Colgate, Bucknell, Haverford, Hobart and William Smith, Middlebury and Williams) o Mike Crenshaw - Georgia State University o Joanne Hughes Clark - Seattle University o John Wisniewski - University of Oklahoma ********************************** User feedback and comments from institutional representatives: o Washington (Suzanne Hawley) - Suzanne had nothing new to report. o Chicago (Al Harper) - no report. o New Mexico State (Rene Walterbos) - Rene had nothing new to report. o Princeton (Dave Bowen) - Dave had nothing new to report. o Colorado (John Bally) - John had nothing new to report. o Virginia (Remy Indebetouw) - no report. o Johns Hopkins (Mary Beth Kaiser) - Mary Beth had nothing new to report. Mark thanked Mary Beth for providing us with useful comments on user documentation. o Georgia State (Mike Crenshaw) - Mike reported that Doug Gies and some students came to the site to use the telescope and had a very positive experience. o Seattle Univ. (Joanne Hughes Clark) - Joanne noted that SPIcam seems to be performing better. o NAPG (Jeff Bary) - Jeff said that there are several users within the NAPG that are already certified users of the 3.5-m. ********************************** Discussion of telescope/instruments report: Mark highlighted that the yearly statistic for unscheduled down time came in at a commendable 0.7%, consistent with the good performance of the telescope in recent years. For other highlights, DIS is working well although there is an ongoing issue with the DCam slit moving. Agile is having rotator motor current problems that limit its range to +/- 180 degrees. TripleSpec is working OK, and SPIcam is seeing intermittent dark-current episodes, possibly due to ion pump interactions. The echelle eCam images were streaking, which was fixed by working on the shutter and control computer. NIC-FPS performance is unchanged. Mark Klaene's detailed report for the reporting period follows: ************************* 3.5-m Telescope and Instruments Highlights 9/5/13 through 10/15/13 0) Overview After 2 weeks of heavy rain and clouds, the typical dry and clear fall weather set in and the last few weeks have been productive. We hosted a visit by a TV documentary crew on comet ISON through a NMSU observer. 1) Telescope Telescope has been working very well since shutdown. Last year?s recorded loss time due to equipment was 0.7%, another great year. 2) Instruments DIS has been operating normally. The only current issue is the DCam slit mask that appears to be moving around; this is being investigated. The contamination on the red camera appears to be back (not unexpected) and will be addressed at next available time. Agile is operational, with a slight problem with the rotator. Currently the rotator is being restricted to +/- 180 degrees. The instrument will be powered off normally and powered on and checked out 1 to 2 days before scheduled observing. TripleSpec had no operational problems this period. A problem with temperature metrology has come up and is being worked on with UVa team. A user also brought up an issue with data reduction that is being looked at by the UVa team. SPIcam variable dark current has been isolated to the current ion pump type and controller. Presently it is running with a different controller and problem is much reduced. A different type of ion pump is on order. Echelle is operational with no problems except for ECam which had a stuck shutter that is now repaired. NIC-FPS is operating in shared-risk observing mode due to occasional image corruption issue. NFS less than 9 is operational. ********************************** New APO imager: Suzanne reminded the committee that our workhorse optical imager, SPIcam, is now ~15-years old and very difficult to maintain. We've been looking to upgrade to a new imaging instrument for the past four years. After several external approaches failed to materialize, we have decided to build the SPIcam replacement with in-house resources. The scientific and functional requirements have been developed, and an internal team is at work to bring the camera to fruition in the coming year. Bill Ketzeback said that we are holding a preliminary design review at APO on 30/31 October, and there is a web page with most of the review documentation posted. Interested users should contact their users committee representative to gain access to the website. The review will include outside experts, and feedback from APO staff and ARC users is most welcome. Suzanne added that members of this Users Committee should review and comment on the science project requirements posted at the website. John Bally asked and it was confirmed that the new camera will accommodate narrow-band filters. Rene asked about the AR coating on the CCD. Bill said that the plan is to be optimized for both UV and red response. If users have a compelling reason to go to a different coating, we will consider it. Suzanne said that if the PDR is successful, we will start the procurement of the hardware; a CDR will be held hopefully in early 2014 and the ambitious plan is to have the instrument ready for commissioning within the next year. ********************************** Quarter 1 scheduling: There is a large proposal from an outside group to lease 60 half nights in the next year, with 40 of them in quarter 1 2014. Suzanne urged the Users Committee members to discuss this with their institutional schedulers as it is likely that we are going to accept the arrangement. Many of the existing partners will be trading time from Q1 into later quarters to compensate. The new leasing partners will get the time that has been agreed to in the signed MOUs. ********************************** User documentation: Mark reported that Jon Holtzman has suggested that we put our user documentation under some kind of version control, such as SVN. Jon also thinks that it would be a good time to create a user wiki, blog, forum, or other such modern communication tool so that users could post and discuss issues about the telescope, instrument, data reduction, etc. Bill thought that a wiki or forum would be a good place for user discussion on data reduction, since that aspect of observing is not supported at APO. Rene thought that a wiki would be a good thing, especially for reduction and archiving discussions. Jeff and Joanne both felt that these kinds of improvements to our user documentation and communications would be especially good for the smaller user institutions. Suzanne suggested that the Users Committee members talk to their respective user communities, and see if we can find volunteers who are interested in helping us set this up. ********************************** Miscellaneous: apo35-general mailing list Suzanne asked that the committee members from the new partner institutions send her the names and account information for individuals at their institutions that wish to be on the apo35-general mailing list. The lead scientists are already subscribed. ********************************** ACTION ITEMS: [open from previous meeting]: ===> ACTION: Find users to assist with instrument documentation. Status: Open. Thanks to Michael Strauss and Mary Beth, who have sent useful comments. We are waiting for comments on the infrared documentation especially from UVa and Colorado. ===> ACTION: By 7 October, each institution to send 1 or 2 powerpoint slides to Suzanne and Mark highlighting 3.5-m science from the past year. Status: Closed, and thanks to those who sent materials. [new from this meeting]: ===> ACTION: Users committee members to query their communities for interest in and voluteers to help with setting up a 3.5m user wiki. ********************************** Next meeting: The next Users Committee phonecon will be on Monday 2 December at 8:30 AM Pacific Time. The agenda and other materials will be sent to the committee members during the preceding week. APO APO APO APO APO Apache Point Observatory 3.5m APO APO APO APO APO This is message 1321 in the apo35-general archive. 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