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The Hamburg Quasar Survey

Published online by Cambridge University Press:  26 July 2016

H.-J. Hagen ,
D. Engels ,
D. Groote  and
D. Reimers
H.-J. Hagen
Affiliation:
Sternwarte der Universität Hamburg, Gojenbergsweg 112, D-21029 Hamburg, Germany
D. Engels
Affiliation:
Sternwarte der Universität Hamburg, Gojenbergsweg 112, D-21029 Hamburg, Germany
D. Groote
Affiliation:
Sternwarte der Universität Hamburg, Gojenbergsweg 112, D-21029 Hamburg, Germany
D. Reimers
Affiliation:
Sternwarte der Universität Hamburg, Gojenbergsweg 112, D-21029 Hamburg, Germany

Extract

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The Hamburg Quasar Survey is carrying out an objective-prism survey on Schmidt plates taken at the Spanish-German Astronomical Centre (DSAZ) on Calar Alto/Spain. We use a 1.7 deg objective-prism providing unwidened spectra with a dispersion of 1390 å/mm at Hγ on hypersensitized KODAK IIIa-J plates. The field size is 5.5 × 5.5 deg. For each field, two prism plates are taken to improve the recognition of faint spectra. A direct plate is taken to determine accurate positions, and to recognize overlaps and extended objects. The coverage of the extragalactic fields up to 1993 is given in Engels et al. (1993).

Type
Part Fifteen: Properties and Clustering of Objects at Large Redshifts
Information
Symposium - International Astronomical Union , Volume 161: Astronomy from Wide-Field Imaging , 1994 , pp. 729 - 730
Copyright
Copyright © Kluwer 1994 

References

Engels, D., Cordis, L., Groote, D., Hagen, H.-J. and Reimers, D., 1993. Newsletter No. 3 of the IAU Working Group on ‘Wide-field Imaging’, ed. MacGillivray, H.T., p. 50.Google Scholar