DRAO Penticton P-survey database
(as of May 1990, courtesy R.Roger & C.R.Purton)
DESCRIPTION OF POINT-SOURCE DATABASE RECORDS
Each source has one or more records in the database, with
each record being 132 characters long. The number of records per
source is determined by the amount of attached comments!
The record format is as follows:
First Record: Position Contents
2-4 DRAO table number
(each DRAO survey is
assigned one or more
numbers)
6-8 Source number (in
given table)
10 Component indicator
("A", "B", etc.)
12-13 RA (hours)
15-16 RA (min)
18-22 RA (sec) (XX.XX)
24-28 RA error (sec) (XX.XX)
(blank=unknown)
30 Sign of declination
31-32 DEC (degrees)
34-35 DEC (arcmin)
37-40 DEC (arcsec) (XX.X)
42-45 DEC error (arcsec)
(XX.X) (blank=unknown)
47 Epoch of coordinates
(1=B1950, 2=J2000,
3=unknown)
49 Type of position
determination
(1=rough estimate,
2=centroid, 3=peak,
4=fitted Gaussian,
5=unknown)
51-56 Flux #1 (variable
format)
58-62 Error in flux #1
(variable format,
may be blank)
64 Units for flux #1
(1=Jy, 2=mJy)
66 Type of flux #1
(1=total (integrated),
2=peak)
68 Type of flux
determination for
flux #1 (1=sum of
positive values above
baselevel, 2=sum of
values about baselevel,
3=fitted Gaussian,
4=unknown)
70-75 Flux #2 (variable
format)
77-81 Error in flux #2
(variable format,
may be blank)
83 Units for flux #2
(1=Jy, 2=mJy)
85 Type of flux #2
(1=total (integrated),
2=peak)
87 Type of flux
determination for
flux #2 (1=sum of
positive values above
baselevel, 2=sum of
values about baselevel,
3=fitted Gaussian,
4=unknown)
89-92 Frequency (GHz)
(1.42 or .408)
94-97 Major half-power width
(variable format)
99-102 Minor half-power width
(variable format)
104-108 Position angle (deg)
(variable format)
110 Units for widths
(1=arcmin, 2=arcsec)
112 Type of shape
determination (1=
approximate diameter
(minor width blank),
2=fitted Gaussian,
3=unknown)
114 Shape qualifier
(1=may be affected
by delay beam,
blank=reliable
estimate)
116-119 Date of observation
(years from 1900)
(XX.X)
121-130 Comments
131 Comment continuation
(non-blank and non-
zero if comments are
continued in next
record)
Second Record: Position Contents
1-93 Same as first record
94-129 Continued comments
131 Comment continuation
(non-blank and non-
zero if comments are
continued in next
record)
Third Record: (same as preceding record)