IAU Symposium No. 167 brought together researchers who use CCDs and arrays, designers and manufacturers of CCDs and Array Mosaics and those who write the software to control these devices and to reduce the large amounts of data contained in each frame.
At the meeting such topics as plans for applying the new technology to the new large telescopes that have been built recently and those planned in the near future, new developments in infrared arrays, advances and concerns with the use of CCDs in photometry and spectroscopy and the creation of large mosaics in photometry and spectroscopy and the creation of large mosaics of chips which allow larger areas of the sky to be covered in a single frame were discussed.
There were sessions devoted to the following topics: New Developments in CCD Technology; New Developments in IR Detector Arrays; Direct Imaging with CCDs and Other Arrays; Spectroscopy with CCDs and Other Arrays; and Large Field Imaging with Array Mosaics. Scientific results of studies made with this technology were covered in the poster sessions.
CCD and Array Detectors have become the detectors of choice at all the world's optical observatories. Such instruments on small university and college telescopes have turned these telescopes into instruments that can now do observations which in the past were done only on the largest telescopes. CCDs and Arrays are known as `the people's detector' because of their ability to turn small telescopes into true research instruments. On large telescopes observations can be made of extremely faint and crowded objects that were impossible to observe before the advent of CCD and Array technology.
The proceedings of this meeting will be useful to all those who are interested in the design, manufacture and use of CCDs and Arrays for astronomical observations.

Zusammenfassung
Proceedings of the 167th Symposium of the International Astronomical Union, held in The Hague, the Netherlands, August 23--27, 1994

Inhalt
Section I - Review Papers.- Array Detectors and Instruments for the ESO VLT.- Design and Fabrication of Large CCDs for the Keck Observatory Deimos Spectrograph.- Scientific CCD Prospects for 1994 and Beyond.- New Developments in CCD Technology for the UV-EUV Spectral Range.- CCD Controllers.- CCDs in Active Acquisition Systems.- CCD Development Activities at ESO.- Infrared Array Detectors: Performance and Prospects.- The Lick Observatory Two Micron Camera.- Infrared Arrays at the European Southern Observatory.- The Impact of Infrared Array Technology on Astronomy.- Monolithic Si Bolometer Arrays: Detectors for far Infrared and Submillimeter Detection.- Observational Concerns and Techniques for High-Background Mid-Infrared (520 Micron) Array Imaging.- An Infrared Camera Based on a Large PtSi Array.- PtSi IR Array in Mosaic Configuration.- CCD Photometry - Present and Future.- CCD Photometry: Some Basic Concerns.- Choosing Filters to Make CCD Photometry Transformable to Other Detectors.- Automated CCD Scanning for near Earth Asteroids.- CCD Time Series Photometry of Astronomical Sources.- High Precision Stellar Photometry With CCDs. I..- High Precision Stellar Photometry With CCDs. II..- Precision Differential CCD Photometry.- Array Polarimetry and Optical-Differencing Photometry.- Cosmic Ray Events and Natural Radioactivity in CCD Cryostats.- Mocam: A 4k X 4k CCD Mosaic for the Canada-France-Hawaii Telescope Prime Focus.- Echelle Spectroscopy with a CCD at LOW Signal-to-Noise Ratio.- Nicmos3 Detector for Spectroscopy.- Spectral Classification with Array Detectors.- Spectroscopic Observations of Solar System Objects: Pushing the Limits.- Va-et-Vent (Back-and-Forth) CCD Spectroscopy: A New Way to Increase the Limiting Magnitude of Very Large Telescopes.-Some Problems of Wide-Field Astrometry with a Short-Focus CCD Astrograph.- A Dual CCD Mosaic Camera System Searching for Massive Compact Halo Objects (MACHOs).- Multi-Fiber Spectroscopy with Wide-Field Telescopes.- Performance of a 2048 x 2048 Pixel Three-Side-Buttable CCD Designed for Large Focal Planes in Astronomy.- CCD Mosaic Development for Large Optical Telescopes.- Highlights of IAU Symposium No. 167.- Section II - Poster Papers.- The Transputer Based CCD Controller at ESO.- Detector Controllers for the Galileo Telescope: A Progress Report.- The Rutherford-SAAO CCD Controllers and Their Applications.- CCD Imagers with Enhanced UV Sensitivity for Industrial and Scientific Applications.- The Large-Field Bright-Star High-Precision CCD Photometer of BAO.- Effects of Shutter Timing on CCD Photometry.- Astronomical Applications of CCDs in Hungary: The First Steps and Future Plans.- A Simple CCD-System for Secondary Alignment of the Spectrum-UV Space Telescope.- The Modernization of the Pulkovo Photographic (Photoelectric) Vertical Circle by a CCD Array.- A New Ocular Micrometer for the Mahis.- PbS and CCD Array Autocollimation Micrometers for the Infrared Meridian Circle.- The Noao CCD Controller - Arcon.- Intensified Electron-Bombarded CCD Images for Industrial and Scientific Applications.- The CCDs at ESO: A Systematic Testing Program.- Development of a 7000 x 4000 Pixel Mosaic CCD Camera.- The Feasibility of a CCD for an Astrometric Refractor.- Stellar Positions From CCD Images.- On the Accuracy of CCD and Photographic Observations of Asteroids and Their Current Orbit Determinations.- On the Problem of Standard Fields for CCD Astrometry.- Combined Visual and Near-IR Digital Photometry: The Very Young Cluster Westerlund 2.- A Dual CCD Mosaic Camera System Searchingfor Massive-Compact Halo Objects (MACHOs).- JHK Photometry of Extragalactic Sources Using an Infrared Array Camera.- Precision CCD Photometry of the Horizontal Branch.- CCD Photometry of the M 67 Cluster in the Vilnius Photometric System.- Estimation of the Errors Involved in the Intensity Measurement of Low S/N Ratio Emission Lines.- EEV and Electron Corp. Virtual Phase CCDs in the Near IR Region, He ? 10830 Å.- Stellar Photometry With a Perfect CCD.- Applications of a Realistic Model for CCD Imaging.- 3D: The New Near-Infrared Field Imaging Spectrometer.- Technical CCD Systems for the ESO Very Large Telescope.- Poster Discussions.- Name Index.- Object Index.