SExtractor

class astropy.io.ascii.SExtractor

Bases: astropy.io.ascii.BaseReader

Read a SExtractor file.

SExtractor is a package for faint-galaxy photometry. Bertin & Arnouts 1996, A&A Supp. 317, 393. http://www.astromatic.net/software/sextractor

Example:

# 1 NUMBER
# 2 ALPHA_J2000
# 3 DELTA_J2000
# 4 FLUX_RADIUS
# 7 MAG_AUTO [mag]
# 8 X2_IMAGE Variance along x [pixel**2]
# 9 X_MAMA Barycenter position along MAMA x axis [m**(-6)]
# 10 MU_MAX Peak surface brightness above background [mag * arcsec**(-2)]
1 32.23222 10.1211 0.8 1.2 1.4 18.1 1000.0 0.00304 -3.498
2 38.12321 -88.1321 2.2 2.4 3.1 17.0 1500.0 0.00908 1.401

Note the skipped numbers since flux_radius has 3 columns. The three FLUX_RADIUS columns will be named FLUX_RADIUS, FLUX_RADIUS_1, FLUX_RADIUS_2 Also note that a post-ID description (e.g. “Variance along x”) is optional and that units may be specified at the end of a line in brackets.

Methods Summary

read(table)	Read input data (file-like object, filename, list of strings, or single string) into a Table and return the result.
write(table)	Write table as list of strings.

Methods Documentation

read(table)

Read input data (file-like object, filename, list of strings, or single string) into a Table and return the result.

write(table)

Write table as list of strings.

Parameters:

table : Table

Input table data.

Returns:

lines : list

List of strings corresponding to ASCII table