To: APO 3.5m users From: Suzanne Hawley, 3.5m Director Re: Triplespec engineering observations As you may have heard, if you've been reading the users committee minutes, the first Triplespec commissioning run went very well during March, 2008. Triplespec is our new, near-infrared, cross-dispersed medium resolution spectrograph being built by the University of Virginia for the 3.5m. One of its unique features is that it takes data in the J, H and K bandpasses simultaneously, providing much faster infrared spectra than conventional spectrographs e.g. at the IRTF. It is a credit to the University of Virginia instrument team, led by John Wilson, and to the APO staff, that the instrument arrived and was integrated into the telescope systems and ready for nighttime observing in only a week. We also acknowledge the efforts of Matt Nelson at UVa, Russell Owen at UW and Fritz Stauffer at APO in getting the software up and running. Many functions are already integrated into TUI, and we plan for the instrument to be fully operational with a TUI interface for Q3 observing (proposals due in May, for observing during the July-Sept quarter). Pending the results of additional engineering commissioning runs during Q2, the plan at this time is to allow science proposals for Triplespec use during Q3. Of course there is some risk with such a new instrument, and we ask for the patience and understanding of users as we continue to commission the instrument. To facilitate writing proposals, we are allowing community access to various engineering and commissioning observations that were obtained during the March engineering run. If you wish to access these observations, please send email to Suzanne Hawley and Bruce Gillespie and we will send you the location of the data. There is also a link to download the (in-development) data reduction software. The preliminary manual is located under the instrument link on the main APO website, and will be updated in the next few weeks as the UVa team analyzes and better understands the instrument usage and performance. Note that many of the engineering observations were taken at the request of your ARC colleagues, and we expect that you will use them only to learn about the instrument characteristics. The data are not to be otherwise used, disseminated or published without consulting the Triplespec instrument team and the scientist who requested the observations. Finally, if you are interested in engineering spectra of one or two targets of your own choosing, please contact John Wilson at UVa. Data will be obtained as time and engineering/commissioning tasks allow during Q2 Triplespec engineering time. Only targets brighter than about J=16 (or K=15) should be requested, as the list of fainter targets previously requested is already longer than the available time will allow. We look forward to Triplespec becoming a facility APO 3.5m instrument in the very near future, which will provide us with an exciting and unique infrared spectroscopic capability. Please start thinking about your Q3 Triplespec proposals now! APO APO APO APO APO Apache Point Observatory 3.5m APO APO APO APO APO This is message 1099 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