JMMC/ESO Calibrator Workgroup - Feb. 16 2011 / 14h-16h

Participants

Group Members	Attending
Pascal BALESTER
Christian HUMMEL
Isabelle PERCHERON
Klara SHABUN
Markus WITTKOWSKI
OlivierChesneau
PierreCruzalebes
GillesDuvert
SylvainLafrasse
GuillaumeMella

Contact Informations

• Grenoble
  • room : Belledone
  • server : visiolaog.obs.ujf-grenoble.fr (@IP 152.77.114.26)
  • phone : 00 33 476 635 508
  • contact : Sylvain Lafrasse (sylvain.lafrasse@obs.ujf-grenoble.fr)
• Nice
  • room: new teleconf. room
  • server: IP 192.54.174.200
  • phone: ?
  • contact: Olivier Chesneau (Olivier.Chesneau@obs-azur.fr)
• Garching
  • room : L130
  • phone : +49 89 3200 6669
  • contact : Markus Wittkowski (mwittkow@eso.org)
  • server: videoconf. will be initiated from here

Action Lists

%ACTIONSEARCH{ web=Jmmc.Software topic=JMMCSearchCalReunionESO?.*}% Archived actions

Agenda

Status of the updates for the next release in June 2011

• JMMC Catalogue:
  • diam_vk values to be present for all stars, also for those that are present in the Borde or Merand catalogues;
  • fixing of the problem of "faulty diam_vk computed from wrong magnitudes coming from Bordé" mentioned in the email from S. Lafrasse, dated 3 Dec 2010 17:41:54;
    • JMMC concludes to leave Bordé & Mérand catalog, and only provide stars diameters that comply to SearchCal criterias when available;
    • ESO proposes to crossmatch with Bordé & Mérand to flag provenance at Calvin stage (quality flag : 1 means JSDC, 2 means Bordé/Mérand, 3 means MIDI);
  • addition of the MIDI consortium calibrator catalogue;
    • JMMC : 61% coverage, 3 problems needing developments:
      1. low pointing accuracy;
      2. tight binary rejecting (not based on magnitude differences);
      3. large error bars on V & R magnitudes -> use AKARI for N band;
    • ESO : show JSDC if available, plus MIDI entries;
  • agreement on a long-term plan to move from ESO catalog format to an updated JSDC (first decipher which columns are missing to do the trick);
  • Next release schedule:

%ACTION{ closed="2011-04-07" closer="Main.SylvainLafrasse" created="2011-02-16" creator="Main.SylvainLafrasse" due="2011-03-01" state="closed" uid="001407" who="Main.ESO" }% Provide CfP parameters. %ACTION{ closed="2011-04-07" closer="Main.SylvainLafrasse" created="2011-02-16" creator="Main.SylvainLafrasse" due="2011-04-01" state="closed" uid="001408" who="Main.SylvainLafrasse" }% Provide first catalog beta. %ACTION{ created="2011-02-16" creator="Main.SylvainLafrasse" due="2011-06-01" state="open" uid="001409" who="Main.SylvainLafrasse" }% Provide final catalog.

• ESO CalVin Interface:
  • fixing of a bug in the computation of the shadowing, and addition of delay line limits;
  • addition of the seeing-dependent limiting magnitude for AMBER;
  • enabling of the LST/HA option;
  • enabling of the search by visibility;

Discussion on possible longer-term improvements

Compared to our original science requirements document, the following items are not yet or not fully implemented. Should they ?

• how to transpose JSDC to faint calibrators (needed in the 1.5 coming years) despite the actual interactive mode and the huge amount of candidate stars at those magnitudes ?
• relax spectral binary filtering on magnitude differences (5, but dependant on instrumental configurations)!
• Spectral type, luminosity class, temperature, surface gravity, LMN magnitudes in the catalogue:
  • information on quality as astrometric reference star;
  • information on quality as spectral calibrator (cf. Sect. 3 of the science requirements document);
• Use of a bad calibrator list and feedback to the catalogue (cf. Sect. 3 of the science requirements document):
  • ESO Quality should provide us with newly flagged calibrators through BadCal;
  • JMMC should filter ESO calibrator catalog through BadCal;
• Information on previous observations and measured quality of a calibrator (cf. Sect. 4 of the science requirements document):
  • ESO Archive starts to provide products, and should then be able to do it in the future;
  • JMMC stresses the problem between bad calibrators and misbehaving instruments;
• display of feasible LST range for science target and calibrators (also search for desired LST range) cf. Sects. 5&6;
• "The new tool shall make use of modern visualizing capabilities and be designed with ease of use in mind" (cf. Sect. 7) Are we there ?
  • ESO states that the user friendliness of CalVin has already greatly improved lately;
  • JMMC emphasizes functionality over new developments;

The science requirements document stated

• "Strategy to find calibrators and to estimate their diameters shall be discussed and regularly revised" How do we do this ?
  • JMMC is happy with our semester videoconferences rhythm to keep everybody up to date on the progress on each side;

Short informal outlook on our collaboration?

-- SylvainLafrasse - 16 Feb 2011