Access to Astronomical Catalogues

Search catalogue
obsoleted
in preparation
catalog without ftp or VizieR link
IV/26               Hercules Messier 13 (M13) photometry     (Ludendorff, 1905)

Der grosse Sternhaufen im Hercules Messier 13. Ludendorff H. <Publ. Astrophys. Obs. Potsdam, 50, 1 (1905)> =1905POPot..50....1L
ADC_Keywords: Clusters, globular Description: Ludendorff's catalog of the M13 globular cluster results from observations made with the 32.5cm refractor of Potsdam Observatory, one on 17 July 1900 (plate A), and the second on June 1902 (plate B). Each plate was measured twice, in opposite position, to remove the possible errors. The catalog contains accurate positions on both plates, photographic magnitudes, and comparison with the previous results from Scheiner (1892). Number 1119 to 1127 where seen only in one position on plate A, and in two positions on plate B. Number 1128 to 1136 where seen only on plate A, and are not in Scheiner catalog. Objects: ---------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------- 16 41 41 +36 27.6 M 13 = NGC 6205 ---------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file catalog.dat 90 1136 Catalog of stars in Messier 13 notes.dat 80 706 Individual notes (in German, english added) notes2.dat 80 234 Individual remarks on Scheiner identifications, and Scheiner catalog and charts
Byte-by-byte Description of file: catalog.dat
Bytes Format Units Label Explanations
1- 4 I4 --- Seq [1,1136]+ Sequential number of star in cluster 5 A1 --- n_Seq [*] indicates a note in notes.dat file 7- 8 I2 --- ma Brightness estimate from Plate A (2) 9 A1 --- n_ma [*] when the star is not clearly seen on both plates 11- 12 I2 --- dm ? difference (ma-mb+1) between plates (2) 15- 21 F7.4 --- Xpos X mean position (in 5.sin(1arcmin)) 23- 29 F7.4 --- Ypos Y mean position (in 5.sin(1arcmin)) 32- 34 I3 30mas dXpos ? Position difference on 2 plates (A-B) 35 A1 --- u_dXpos [)] when star not found on the 2 reductions 38- 40 I3 30mas dYpos ? Position difference on 2 plates (A-B) 41 A1 --- u_dYpos [)] when star not found on the 2 reductions 43 A1 --- oRA- Offset in right ascension (sign) (1) 44 I1 arcmin oRAm Offset in right ascension (min) (1) 46- 50 F5.2 arcsec oRAs Offset in right ascension (s) (1) 52 A1 --- oDE- Offset in declination (sign) (1) 53 I1 arcmin oDEm Offset in declination (arcmin) (1) 55- 59 F5.2 arcsec oDEs Offset in declination (arcsec) (1) 62- 64 I3 --- S ? Number of the star in Scheiner's (1892) 65 A1 --- --- [-] 66- 68 I3 --- S2 ? when 2 Scheiner's numbers represent the star 69 A1 --- u_S [)] when Scheiner's star seen on 1 plate only 70 A1 --- n_S [+] disagreement with Scheiner's, in notes2.dat file 72- 75 F4.1 mag Gr ? Magnitude assigned in Scheiner's catalog 78- 82 F5.2 arcsec dRA ? Difference in RA Ludendorff - Scheiner 83 A1 --- u_dRA [)] disagreement with Scheiner's 85- 89 F5.2 arcsec dDE ? Difference in DE Ludendorff - Scheiner 90 A1 --- u_dDE [)] disagreement with Scheiner's
Note (1): The reference position is RA = 16 38 06.14, DE = +36 39 19.06 (1900) Note (2): the estimate consists in a number in the range 1 to 16; this "Helligkeitsstuffe" (brightness step) is 1 for a photographic magnitude of 8.5mag, 2 for 8.7, etc (i.e. mag = 8.3 + 0.2*ma).
Byte-by-byte Description of file: notes.dat
Bytes Format Units Label Explanations
1- 4 I4 --- Seq Sequential number (repeated when several lines) 6- 80 A75 --- Note Text of the note (English translation added)
Byte-by-byte Description of file: notes2.dat
Bytes Format Units Label Explanations
1- 4 I4 --- Seq ? Sequential number 6- 8 I3 --- S ? Scheiner number 13 A1 --- u_S [)] when Scheiner's star seen on 1 plate only 15- 80 A66 --- Note Text of the note
History: Prepared via OCR at CDS. References: Schreiner J., "Der Grosse Sternhaufen im Hercules Messier 13 nach Aufnahmen am Potsdamer photographischen Refractor, Abh. der Koenigl. Preuss. Akademie der Wissenschaften zu Berlin vom Jahre 1892.
(End) James Marcout, Patricia Bauer [CDS] 01-Jul-2003
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

catalogue service

© UDS/CNRS

Contact