J/MNRAS/306/592 UBVR CCD sequences for wide-field surveys. II. (Croom+, 1999)
Faint UBVRI CCD sequences for wide-field surveys.
II. UBVR sequences at δ=-30°
Croom S.M., Ratcliffe A., Parker Q.A., Shanks T., Boyle B.J., Smith R.J.
<Mon. Not. R. Astron. Soc. 306, 592 (1999)>
=1999MNRAS.306..592C 1999MNRAS.306..592C (SIMBAD/NED BibCode)
ADC_Keywords: Photometry, UBVRI ; Surveys
Keywords: techniques: photometric - catalogues
Abstract:
We present results from a continuing campaign to secure deep
multi-colour CCD sequences for photoelectric calibration in UK Schmidt
fields with galactic latitudes |b|>50°. In this paper, we present
UBVR photometry in 12 fields and BR photometry in a further 14 fields
observed within UK Schmidt survey fields centered at δ=-30°.
Our observations were carried out with the 0.9m Telecope at the
Cerro-Tololo Inter-American Observatory.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tables.dat 107 1323 UBVR photometry
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See also:
J/MNRAS/276/33 : UBVRI CCD sequences for wide-field surveys. I. (Boyle+ 1995)
Byte-by-byte Description of file: tables.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Object Object designation (fNNNN-NNN)
11- 12 I2 h RAh Right ascension (J2000.0)
14- 15 I2 min RAm Right ascension (J2000.0)
17- 21 F5.2 s RAs Right ascension (J2000.0)
23 A1 --- DE- Declination sign (J2000.0)
24- 25 I2 deg DEd Declination (J2000.0)
27- 28 I2 arcmin DEm Declination (J2000.0)
30- 33 F4.1 arcsec DEs Declination (J2000.0)
35- 39 F5.2 mag Bmag B magnitude
41- 44 F4.2 mag e_Bmag rms uncertainty on Bmag
46- 50 F5.2 mag B25mag B 25 pixel aperture magnitude (1)
52- 56 F5.2 --- s/g Star galaxy separation parameter b10-b6 (2)
58- 62 F5.2 mag Umag U magnitude
64- 67 F4.2 mag e_Umag rms uncertainty on Umag
69- 73 F5.2 mag U25mag U 25 pixel aperture magnitude (1)
75- 79 F5.2 mag Vmag V magnitude
81- 84 F4.2 mag e_Vmag rms uncertainty on Vmag
86- 90 F5.2 mag V25mag V 25 pixel aperture magnitude (1)
92- 96 F5.2 mag Rmag R magnitude
98-101 F4.2 mag e_Rmag rms uncertainty on Rmag
103-107 F5.2 mag R25mag R 25 pixel aperture magnitude (1)
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Note (1): 25 pixel aperture magnitudes give good estimates of total galaxy
magnitude for galaxies with isophotal diameter less than 20".
Note (2): Generally, objects with b10-b6 < -0.2 will be galaxies,
although this does vary somewhat from field to field, depending
on the seeing in each observation.
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History: Copied on 22-Apr-1999 at
http://icstar5.ph.ic.ac.uk:80/~scroom/phot/photom.html
(End) Patricia Bauer [CDS] 21-Apr-1999