Index of /data/allwise/unwise-phot

Name	Last modified	Size

Parent Directory		-
specmatch-dr12.fits	2014-10-28 09:44	9.9G
specmatch-dr10.fits	2014-10-22 10:52	4.2G
sdss-dr10d-fields.fits	2014-10-17 13:37	11M
sdss-dr10d-tiles.fits	2014-10-17 13:38	259K
eboss-atlas.fits	2014-10-21 15:49	236K
sdss-dr13-atlas.fits	2014-10-21 15:54	194K
README.html	2018-04-20 14:54	4.2K
sdss-dr13-pobj/	2018-04-12 09:35	-
sdss-dr13-phot/	2018-04-12 09:35	-
sdss-dr10d-pobj/	2018-04-12 12:38	-
sdss-dr10d-phot/	2018-04-12 12:38	-
sdss-dr10d-SEDs/	2018-04-12 11:24	-
eboss-pobj/	2018-04-12 09:35	-
eboss-phot/	2018-04-12 12:36	-

WISE photometry of sources in the SDSS catalogs

There are three versions of the catalogs:

sdss-dr10d: Uses the catalog from the SDSS-DR10 release. This is the version described in Lang, Hogg & Schlegel (2016).
sdss-dr13: Uses the catalog from the SDSS-DR13 release (which was still private to the SDSS collaboration at the time the paper was published).
eboss: The version used for targeting of the SDSS-IV/eBOSS survey, like sdss-dr13 but with only W1/W2.

Code can be found here: https://github.com/dstndstn/unwise-sdss-phot.

Contents:

sdss-dr10d-fields.fits: A table of SDSS fields for which forced photometry exists.
sdss-dr10d-tiles.fits: A table of WISE coadd tiles for which forced photometry exists.
specmatch-dr10.fits: SDSS DR10 spectra matched to our WISE photomtery. This is the DR10 specObj file augmented with our sdss-dr10d photometry for matching rows.
sdss-dr10d-pobj/: Our WISE photometry results, in files that are row-by-row parallel to the SDSS DR10 photoObj files. The directory structure follows the same pattern too: %(run)i/%(camcol)i/photoWiseForced-%(run)06i-%(camcol)i-%(field)04i.fits.
sdss-dr10d-phot/: Our WISE photometry results, in files corresponding to WISE coadd tiles. These include SDSS sources within the tile, plus a margin. The same SDSS object may appear in multiple tiles. The filename is based on the WISE tile name, which encodes an approximate RA, Dec center; phot-RRRR[pm]DDD.fits is the tile centered at roughly RRR.R degrees RA, DD.D degrees Dec.
sdss-dr10d-SEDs: "I just want RA,Dec, and the SDSS and WISE SEDs." Reasonable enough request! See the description below for details.
sdss-dr10d-{phot,pobj}/md5sums.txt: Checksums for all files. Pro tip: you could edit this file to produce a "wget" script, if you were so inclined.
sdss-dr13-* and eboss-: Same as for sdss-dr10d. The equivalent of sdss-dr10d-tiles.fits is named {sdss-dr13,eboss}-atlas.fits.
specmatch-dr12.fits: SDSS DR12 spectroscopy matched to our sdss-dr13 results.

See Appendix A of Lang, Hogg & Schlegel (2016) for a description of the catalog contents.

The SED tables, one per SDSS run+camcol, contain

Column number	Column name	Data type
1	ra	D
2	dec	D
3	pointsource	L
4	w1_nanomaggies	E
5	w1_nanomaggies_ivar	E
6	w2_nanomaggies	E
7	w2_nanomaggies_ivar	E
8	w3_nanomaggies	E
9	w3_nanomaggies_ivar	E
10	w4_nanomaggies	E
11	w4_nanomaggies_ivar	E
12	sdss_flux	5E
13	sdss_flux_ivar	5E

Where "pointsource" = SDSS point source or treated_as_pointsource, "sdss_flux" = SDSS PSF flux for "pointsource" objects, "cmodelflux" otherwise.