WISE 3-Band Cryo L3a Image Metadata Table
Quick Links
Associated Data Products
- Intensity FITS images
- Uncertainty FITS images
- Coverage FITS images
- Positions of spurious sources from diffraction spikes
- Positions of spurious sources from optical ghosts
- Positions of spurious sources from latents
- Positions of spurious sources from halos
Overview
This catalog contains metadata for WISE 3-band Cryo Atlas images. Each row in the catalog consists of metadata for a single coadd, and is uniquely identified by the coadd_id and band columns. A complete listing of available columns can be accessed by clicking the link above.
Metadata queries can be issued at the following URL:
For example, /ibe/search/wise/cryo_3band/3band_p3am_cdd?POS=10,70 returns metadata for coadds containing (RA, Dec) = (10, 70) deg. Query parameters are documented here.
Generating URLs for data products
WISE 3-band Cryo Atlas data product URLs are built using the values of the coadd_id and band columns. For the purposes of illustrating URL generation, we introduce two quantities derived from coadd_id: coaddgrp and coadd_ra. Please note that these do not correspond to columns in the metadata table. The first quantity, coaddgrp, consists of the first 2 characters of coadd_id. The second, coadd_ra, consists of the first 4 characters of coadd_id.
Note: MD5 checksums for all data products are stored. Checksum URLs are obtained by simply appending ".md5" to the data product URL.
- Intensity FITS images
-
These are located at:
https://irsa.ipac.caltech.edu/ibe/data/wise/cryo_3band/3band_p3am_cdd/{coaddgrp:s}/{coadd_ra:s}/{coadd_id:s}/{coadd_id:s}-w{band:1d}-int-3.fitsExample:
By appending center and size parameters (e.g /ibe/data/wise/cryo_3band/3band_p3am_cdd/00/0083/0083p696_ab31/0083p696_ab31-w3-int-3.fits?center=10,70&size=200pix), one can also download cutouts (see the documentation).
Python code to build a URL:
- params = { 'coadd_id': '0083p696_ab31',
- 'band': 1,
- }
- params['coaddgrp'] = params['coadd_id'][:2]
- params['coadd_ra'] = params['coadd_ra'][:4]
- path = str.format(
- '{coaddgrp:s}/{coadd_ra:s}/{coadd_id:s}/{coadd_id:s}-w{band:1d}-int-3.fits',
- **params)
- url = 'https://irsa.ipac.caltech.edu/ibe/data/wise/cryo_3band/3band_p3am_cdd/' + path
C code to build a URL:
- char url[256];
- char coaddgrp[3];
- char coadd_ra[5];
- const char *coadd_id = "0083p696_ab31";
- const char *server = "https://irsa.ipac.caltech.edu/ibe";
- int band = 1;
- memcpy(coaddgrp, coadd_id, 2);
- coaddgrp[2] = '\0';
- memcpy(coadd_ra, coadd_id, 4);
- coaddgrp[4] = '\0';
- snprintf(url, sizeof(url),
- "%s/data/wise/cryo_3band/3band_p3am_cdd/%s/%s/%s/%s-w%1d-int-3.fits",
- server, coaddgrp, coadd_ra, coadd_id, coadd_id, band);
Java code to build a URL:
- String coadd_id = "0083p696_ab31";
- String server = "https://irsa.ipac.caltech.edu/ibe";
- int band = 1;
- String url = String.format(
- "%1$s/data/wise/cryo_3band/3band_p3am_cdd/%2$s/%3$s/%4$s/%4$s-w%5$1d-int-3.fits",
- server, coadd_id.substring(0,2), coadd_id.substring(0,4), coadd_id, band);
- params = { 'coadd_id': '0083p696_ab31',
- Uncertainty FITS images
-
These are located at:
https://irsa.ipac.caltech.edu/ibe/data/wise/cryo_3band/3band_p3am_cdd/{coaddgrp:s}/{coadd_ra:s}/{coadd_id:s}/{coadd_id:s}-w{band:1d}-unc-3.fits.gzExample:
Append center and size parameters to these URLs to download a cutout instead of a full image (see the cutouts documentation).
A trivial change to the format string in the sample code snippets above suffices to generate these URLs.
- Coverage FITS images
-
These are located at:
https://irsa.ipac.caltech.edu/ibe/data/wise/cryo_3band/3band_p3am_cdd/{coaddgrp:s}/{coadd_ra:s}/{coadd_id:s}/{coadd_id:s}-w{band:1d}-cov-3.fits.gzExample:
Append center and size parameters to these URLs to download a cutout instead of a full image (see the cutouts documentation).
A trivial change to the format string in the sample code snippets above suffices to generate these URLs.
- Positions of spurious sources from diffraction spikes
-
These are stored in IPAC ASCII table files containing 2 columns: ra and dec, the J2000 right ascensions and declinations of WISE 3-band Cryo Atlas sources believed to be spurious detections from diffraction spikes. If there are no such sources for a frame, then no position table is stored and visiting the URL generated according to the recipe below will return a 404 Not Found HTTP response. The tables are located at:
https://irsa.ipac.caltech.edu/ibe/data/wise/cryo_3band/3band_p3am_cdd/{coaddgrp:s}/{coadd_ra:s}/{coadd_id:s}/{coadd_id:s}-art-w{band:1d}-D.tblExample:
A trivial change to the format string in the sample code snippets above suffices to generate these URLs.
- Positions of spurious sources from optical ghosts
-
These are stored in IPAC ASCII table files containing 2 columns: ra and dec, the J2000 right ascensions and declinations of WISE 3-band Cryo Atlas sources believed to be spurious detections from optical ghosts. If there are no such sources for a frame, then no position table is stored and visiting the URL generated according to the recipe below will return a 404 Not Found HTTP response. The tables are located at:
https://irsa.ipac.caltech.edu/ibe/data/wise/cryo_3band/3band_p3am_cdd/{scangrp:s}/{scan_id:s}/{frame_num:03d}/{scan_id:s}{frame_num:03d}-art-w{band:1d}-O.tblExample:
A trivial change to the format string in the sample code snippets above suffices to generate these URLs.
- Positions of spurious sources from latents
-
These are stored in IPAC ASCII table files containing 2 columns: ra and dec, the J2000 right ascensions and declinations of WISE 3-band Cryo Atlas sources believed to be spurious detections from latents. If there are no such sources for a frame, then no position table is stored and visiting the URL generated according to the recipe below will return a 404 Not Found HTTP response. The tables are located at:
https://irsa.ipac.caltech.edu/ibe/data/wise/cryo_3band/3band_p3am_cdd/{scangrp:s}/{scan_id:s}/{frame_num:03d}/{scan_id:s}{frame_num:03d}-art-w{band:1d}-P.tblExample:
A trivial change to the format string in the sample code snippets above suffices to generate these URLs.
- Positions of spurious sources from halos
-
These are stored in IPAC ASCII table files containing 2 columns: ra and dec, the J2000 right ascensions and declinations of WISE 3-band Cryo Atlas sources believed to be spurious detections from halos. If there are no such sources for a frame, then no position table is stored and visiting the URL generated according to the recipe below will return a 404 Not Found HTTP response. The tables are located at:
https://irsa.ipac.caltech.edu/ibe/data/wise/cryo_3band/3band_p3am_cdd/{scangrp:s}/{scan_id:s}/{frame_num:03d}/{scan_id:s}{frame_num:03d}-art-w{band:1d}-H.tblExample:
A trivial change to the format string in the sample code snippets above suffices to generate these URLs.