I/114 Cordoba Durchmusterung (Thome 1892-1932)

Cordoba Durchmusterung

Thome J.M.

<Resultados del Observatorio Nacional Argentino

16 (1892, Part I: -22deg to -32deg)

17 (1894, Part II -32deg to -42deg)

18 (1900, Part III, -42deg to -52deg)

21 (Part I) (1914, Part IV, -52deg to -42deg)

21 (Part II) (1932, Part V: -62 deg to -90deg)>

Description:

The "Cordoba Durchmusterung" (CD, Thome 1892-1932) is a visual survey of southern stars in the declination zones -22 to -89 deg, carried out as an extension to the "Bonner Durchmusterung" (BD) catalogs of Argelander (1859-1862) (see also Kuestner 1903) and Schoenfeld (1886). It contains 613959 records for stars brighter than 10.0 magnitude.

Introduction:

The goal of the survey was to obtain a position and estimated visual magnitude for every star down to 10.0 magnitude inclusive, but the faint limit was confirmed from comparisons with other catalogs, to be somewhat below 10. The positional uncertainties quoted in the original publications vary from +/- 0.42 sec and +/- 0.23 arcmin for zones -22 to -32 deg and +/- 0.33 sec, +/- 0.10 arcmin for zones -42 to -51 deg.

The document originally prepared by Wayne H. Warren Jr., on which this document is closely based (adc.doc) contains substantial additional information.

File Summary:

Byte-by-byte Description of file: cd.dat

Note on suppl:

a, b, or c: star is added in the corrigenda; D: star is deleted in the corrigenda

Note on mag:

20.0 = neb; 30.0 = var

Note on RAs:

precision varies; tenths can be blank

Byte-by-byte Description of file: cdchg.dat

History:

The data in the machine-readable "Cordoba Durchmusterung" were keypunched directly from the published catalog at the National Space Science Data Center (NSSDC). The original catalog had been microfiched earlier by photocopying and filming the entire printed version, and copies of the microfiche had been distributed to interested members of the astronomical community. Ten volunteers from the U.S. and Australia completed the proofing over the next three years. Individual zones from the complete preliminary tape were then transferred to disk storage and edited. This method was used to provide further checks where errors might be recognized during the correction process. as that zone was being processed. After the correction of all zones, the individual data sets were concatenated to a single magnetic tape file. This Users should particularly note that, due to corrections inserted from the corrigenda, the CD stars are not strictly in right ascension order within each zone; hence, if the catalog is sorted by R.A., e.g., for search purposes, some CD numbers will become disordered. On the other hand, if right ascension searching is to be performed, it will be necessary to sort the catalog by right ascension. All corrections made to the original catalog by incorporation of the corrigenda are presented in cdchg.dat where it is noted when stars have become disordered in right ascension following the changes.

Acknowledgements:

Although the work was initiated and supervised by Jaylee M. Mead, Theresa A. Nagy and Wayne H. Warren Jr., punching could never have been begun and the project completed without the support and encouragement of the NSSDC Director James I. Vette. The keypunching was done at NSSDC by Beth Alexander, Carol Bergstrom and Margy Goodwin, while the monitoring software for the data transfer was written by Frank Barnes with contributions by Eugene Scarzafava, and data migration to tape was done by Charleen Perry with assistance and supervision by Ralph Post. Proofreading of individual zones was contributed by Scott Birney (Wellesley College), Richard Dietz (University of Northern Colorado), Mati Morel (Rankin Park, NSW, Australia), Theresa Nagy (ADC), Sidney Parsons (Space Telescope Science Institute), William Stein (U. S. Naval Surface Weapons Laboratory, Dahlgren, VA), George Wolf (Southwest Missouri State University), and the author. Additional zones were proofread at the ADC by summer students Paula Feldman and Kimberly Kniffen, who also assisted greatly with error checking, recording, and data correction. Checking and recording were also done at the ADC by Rajendra Nigam, Charleen Perry and the author.

References:

Argelander, F. 1859-1862, Bonner Durchmusterung des Nordlichen Himmels, Erste bis dritte sektion, Astronomischen Beobachtungen auf der Sternwarte de Koniglichen Rhein. Friedrich-Wilhelm-Universitats zu Bonn, Bands 3-5.

Gill, D. and Kapteyn, J. C. 1895-1900, Cape Photographic Durchmusterung, Ann. Cape Obs. 3 (1895, Part I: zones -18 to -37 deg); 4 (1897, Part II: zones -38 to -52 deg); 5 (1900, Part III: zones -53 to -89 deg).

Kuestner, F. 1903, Bonner Durchmusterung des Nordlichen Himmels, zweite berichtigte Auflage, Bonn Universitats Sternwarte (Bonn: A. Marcus und E. Weber's Verlag).

Schoenfeld, E. 1886, Bonner Sternverzeichniss, Vierte Sektion, Astronomische Beobachtungen auf der Sternwarte der Koniglichen Rheinischen Friedrich- Wilhelms-Universitat zu Bonn 8, Part IV (Bonn: Adolph Marcus).

Thome, J. M. 1892-1932, Cordoba Durchmusterung, Resultados del Observatorio xxNacional Argentino 16 (1892, Part I: -22 to -32 deg), 17 (1894, Part II: xx-32 to -42 deg), 18 (1900, Part III: -42 to -52 deg), 21 (Part I) (1914, xxPart IV, -52 to -62 deg), 21(Part II) (1932, Part V: -62 to -90 deg).

(End) Nancy G. Roman [NSSDC/ADC] 12-Nov-1994