Minutes for Telecon for Jan 15, 2003 Present: Whitney, Meade, Indebetouw, Babler, Clemens, Stolovy, Mathis Next telecon: *Tuesday* Feb 11, 2003, 11 am CST, 608-265-1000 #4112 Ed & Christer are in Australia to obtain the last segment (southern plane segment) of our program to resolve distance ambiguities in the GLIMPSE survey area. The AO data have been accepted for publication and the GBT data are in the process of being prepared for publication. Hopefully with the combined data for all high resolution surveys that will be available including ours, we will have about 200 massive star formation regions in the GLIMPSE survey area with reliable distances. Change telecons back to Tuesdays at 11 AM CT? --------Team OK, next telecon is Tuesday Feb 11, 11 am CST. The telecon dates for the rest of the semester are set for 3/11, 4/08, 5/06 and 6/03/03. Madison team meeting sometime in March (best dates?)------Team March is bad for the BU folks. First half of March is bad for Remy. Last half of March bad for Barb & Marilyn. How about near or after the SIRTF launch? The launch can slip about 3 weeks (from April 15), then it would slip a lot. So maybe a meeting during the last 2 weeks of April or early May? People should send Ed and Remy dates they are available and not available in April and early May. At the team meeting we should make a list of papers and leads and also discuss author list policy. Lockheed's new control software increases slew overhead. GLIMPSE is now ~50 hours over our allotted 400 hours with this software and our SV time is over by about 10%. Consider shaving off enough outer longitude equally in north and south, or hold back one IRAC segment? Tony says that the final version of the control software may somewhat lower overhead than the present version, but we will have to have a plan in mind for how to accommodate greater slew overhead. What philosophy should we adopt? Also will need to consider very carefully our SV area to achieve our goals and stay within our allotted 10 hours. Will this make any difference in our choice of object to observe? --------Team The consensus was to redo the AORs with less longitude coverage and see how much longitude we lose. John Dickey previously emphasized symmetry in the data taking and he is very interested in the southern hemisphere part of the survey so dropping a southern hemisphere segment might not be the way to go. For SV, RWC57 is on the ROC and out of our survey region so we won't be able to use it for our SV observation. NGC6334 is also outside our survey and not visible until Aug 18. The prime candidate then is G333.6 with visibility starting Aug 4. What is the best spot in the G333.8 area to look at? Ask John D. Remy will check on the roll angle for this region. We are 10% over the time for the SV observation. Suggest cutting down the number of passes from 10 to 8? Note from Susan: The new AOR submission deadline is March 1, 2003. The new SPOT software will be released soon. Status of the PASP paper (if Bob is present, other wise skip) --- Bob B. (aim for end of Jan submittal) Bob not here. Dan had comments for Bob right before Christmas. What IS the deadline for submittal??? Status of the SSC documents (Data Products & Science Requirements) ---Marilyn, Bob (aim for end of Jan submittal) Version 0.1 (Dec 2,2002) of the Data Products Document is posted on the GLIMPSE home page. We said we would submit version 0.5 of the 2 documents at L-2, which would be mid-February. The Data Products document is in good shape. It would be nice to include a C&R plot. Remy & Christer are working on C&R... Remy is using the new ISDS but the WCS is still off. They hope to get done with the C&R work by the end of February. Status of SSC bandmerger Any further work on it at SSC Is the current version adequate? ----------Remy The SSC developer (Aronsson) is back on the project. Remy will send email about the problems he encountered when using the bandmerger. Remy says the current version is not adequate; too many flaws. Source extraction statistics (update) -----Brian Source extraction using mosaic images - Brian has it working on all 4 bands. The results are encouraging. There are still 2 areas to solve: - Spurious sources in high bkg areas - Get the best understanding of how errors are correlated pixel-to-pixel It would be good if we could compare our results, using DAOPHOT and Montage, to SSC results using their PSE and Mosaicer. Could they run the same images through their post-BCD system? Barb will provide Susan some test images. Remy brought up the point about developing software for producing products not to be delivered to the SSC but for our own science, like a method to identify clusters, and a way to produce images without the sources to study the diffuse bkg. The BU folks were planning on having their summer students work on algorithms to produce e.g. a candidate list of clusters from the images. We can put the module in the pipeline. Susan suggested 2MASS may have already attempted similar things. She suggests contacting Tom Jarrett for more info. Pipeline (update) ------------------Marilyn & Barb The pipeline has 8 levels. We have implemented the first 5. We still need to do Level F) Photometry from Mosaic Images; Level G) Bandmerge results from Level F; and Level H) Produce Point Source Catalog and Archive Mark has a new larger set of data (the W51 simulated data) to work on the QLVT interaction with the pipeline. Keywords were added to the header to facilitate this. We need to mosaic the 2MASS data for the W51 region for Mark to use with the QLVT. Mosaicer (update) --------Barb Montage still has some bugs wrt background matching. All the 2MASS quicklook images have been downloaded for the entire GLIMPSE survey region. Barb corresponded with John Carpenter and he said the quicklook images are photometric but of lesser fidelity so we should be able to use them for the QLVT. We should look at these images in the G333.6 area!! Does anyone know when the 2MASS Point Source Catalog will be released??? Boston meeting update --- Dan Check the web site (link is on GLIMPSE home page). Most of the speaking slots have been filled. They've secured NASA funding and are looking for NSF funding. They will get a poster out on it in the next few weeks. GLIMPSE Science: AGBs, carbon stars, K giants as galactic probes?----------Team Ed suggests that from now on we plan to discuss at least one science topic at each of our telecons to keep us focused on the fact that we are in this for some exciting science. No one had a chance to think about today's topic so for the next telecon, we should discuss what GLIMPSE might be able to do with identifying and using AGBs, carbon stars, and K giants as galactic probes.