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Opening Remarks by the Director General of ESO
The Role of Schmidt Telescopes in the Study of Galactic Structure
Astrometry with Schmidt Telescopes
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48-inch Schmidt telescope A/mm absolute magnitude accuracy anticentre astrometry Astronomy Astrophys atlas Bergh Bidelman Blaauw blue Bolton brightness calibration catalogue colour photometry colour-colour diagram colour-index comparison correcting plate corrector determined diameter disc DISCUSSION dispersion distance early-type stars elliptical galaxies emulsion errors European Southern Observatory exposure faint fainter FHB stars field filter focal length galactic halo galactic plane halo stars Hamburg Heckmann identification infrared interstellar interstellar reddening investigation large Schmidt telescopes limiting magnitude llla-J luminosity Luyten main sequence measured method microns Minkowski objective prism objective-prism observations obtained optical Palomar Sky Survey Philip photoelectric scales photographic photometry plateholder positions possible programme proper motions QSOs radial velocity radio sources reddening Reddish redshift region Schmidt plates Schmidt telescopes southern sky spectral types square degree star images survey plates three colour type stars variable Virgo Cluster