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I/114 Cordoba Durchmusterung (Thome 1892-1932)
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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)>
=1892cdbp.book.....T
=1894cdbp.book.....T
=1900cdbp.book.....T
=1914cdbp.book.....T
=1932cdbp.book.....T
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ADC_Keywords: Surveys; Durchmusterungen
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:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
adc.doc 80 839 The original ADC document
cd.dat 30 613959 The CD catalog
cdchg.dat 79 253 Changes from the printed catalog
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Byte-by-byte Description of the file: cd.dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- cat [CD] The catalog prefix
3- 5 I3 deg zone [-22/-89] The declination zone
6-10 I5 --- num The number of the star within the zone
11 A1 --- suppl *[a-c D] star in corrigenda
12-15 F4.1 mag mag *Estimated visual magnitude
16-17 I2 h RAh Hours of right ascension, 1875
18-19 I2 min RAm Minutes of right ascension, 1875
20-23 F4.1 s RAs *Seconds of right ascension, 1875
24-24 A1 --- DE- [-] Sign of declination
25-26 I2 deg DEd Degree of declination, 1875
27-30 F4.1 arcmin DEm Minutes of declination, 1875
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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
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Byte-by-byte Description of the file: cdchg.dat
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Bytes Format Units Label Explanations
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1- 3 I3 deg zone [-22/-89] The declination zone
5- 9 I5 --- num The CP number
10 A1 --- n_num [ab ] Note on star number
12-14 A3 --- field The field changed
16-21 F6.2 --- old ? The printed value
23-27 A5 --- new ? The corrected value
30-79 A50 --- note Comments
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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.
See also:
I/122 : Bonner Durchmusterung (+89 to -01 degrees)
I/119 : Southern part "Suedlicher Durchmusterung" (-02 to -23 degrees)
I/108 : Cape Photographic Durchmusterung (-18 to -90 degrees)
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).
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(End) Nancy G. Roman [NSSDC/ADC] 12-Nov-1994