GSCII BAROLO

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1 BILLION STARS
Attilio Ferrari Istituto Nazionale di Astrofisica
Barolo 2001
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The beginning (1988) 13 years ago
The need of new approach to astrometry for
OATO OATO people move to STScI to work for HST
astrometry
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The DSS and Barry Lasker
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The 1989 Memorandum of Understanding between
STScI and OATO on improving the photometric and
astrometric calibrations of GSC-I and the use of
astrophysical data
The support of Riccardo Giacconi
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The grand project (1989) The HST guide star
catalog as a scientific tool, a proposal to NASA
for GSC-II Difficult times, but still going
ahead A (risky) meeting in Geneva
(1990) Crucial help from ASI
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Memorandum of Understanding between STScI and CRA
(1995)PIs B. Lasker and M. Lattanzi
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GSPC-II photometric calibrations, routine
observations at La SillaMemorandum of
Understanding between OATO and ECF to speed-up
data reduction and calibrations (1997)
The actions of CRA Call for Proposals out to the
Italian community Coordinator S. Sciortino
(PA) Project Supervisors F. Fusi-Pecci (BO) and
L. Benacchio (PD)
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Hard work plate scanning, observations,
calibrations

• Constant support of CRA for a National
  project scientific experiments
• Resources of OATO (personnel, equipment, wine
  and bagna caûda sometimes)
• An exceptionally friendly collaboration
• The invaluable enthusiasm and unabated faith
  of Barry
• New forces ESA and ECF
• A terrible 1999

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THE GUIDE STAR CATALOG GSC-II THE MOST COMPLETE
CATALOG IN THE WORLD
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GSC2.2 All-Sky Map Galactic projection
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FIRST PUBLIC RELEASE OF THE GSC II THE GSC 2.2
RELEASED ON JUNE 4, 2001
Press release at http//oposite.stsci.edu/pubinfo/
PR/2001/18/pr.html
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Still work to do towards GSC 2.3

• Up to 1 billion objects
• down to m22 in J and m20 in F
• Proper motions
• Catalog
• Users interfaces
• and finally scientific exploitation

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GSC-II - The Italian participation
Funds allocated (personnel excluded)
60K from the Italian Space Agency
(1991-1992) 40K /year from
CRA/OATO (1995-1999) 280K
contracts from ESO/ECF (1998-1999)
20K from OATO (2000)
2K in kind (wine and survival
goods) TOTAL 402K less than 0.001 per
object ! or 2
ITL per object
or
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Thanks to all !
OATO M. Lattanzi, B. Bucciarelli, R. Casalegno,
A. Ferrari, R. Pannunzio, R. Morbidelli, M.
Sarasso, A. Spagna, R. Smart, A. Volpicelli,
A. Zacchei STScI B. McLean, M. Asbury, J. Garcia
(Gemini), G. Greene, F. Gugliemetti, G. Hawkins
(ESA), V. Laidler, C. Loomis, H. Jenkner, M.
Meakes, J. Morrison, A. Rosenberg, C. Sturch,
R. White, D. Wolfe (Gemini) ECF P. Benvenuti,
N. Fourniol, R. Mignani, B. Pirenne