2MASS 6-Degree Mosaic Image Metadata Table

Quick Links

• Available Columns
• Browse 2MASS 6-Degree Mosaic Data

Associated Data Products

• Primary 6-Degree Mosaic FITS images
• Reduced Resolution 6-Degree Mosaic FITS images

Overview

This catalog contains metadata for 2MASS 6-Degree Mosaic frames. Each row in the catalog consists of metadata for a single frame, and is uniquely identified by the filter and seqnum 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, <root>/search/twomass/mosaic/sixdeg?POS=0,0 returns metadata for images containing (RA,Dec) = (0, 0). Query parameters are documented here.

Generating URLs for data products

2MASS 6-Degree Mosaic data product URLs are built using the values of the filter and seqnum columns.

Primary 6-Degree Mosaic FITS Images

These are located at:

<server><root>/data/twomass/mosaic/sixdeg/{filter:1s}/{seqnum:05d}/mosaic_6deg_{filter:1s}{seqnum:05d}_1asec.fits

Examples:

• <root>/data/twomass/mosaic/sixdeg/h/00345/mosaic_6deg_h00345_1asec.fits
• <root>/data/twomass/mosaic/sixdeg/k/01274/mosaic_6deg_k01274_1asec.fits

By appending center and size parameters (e.g. <root>/data/twomass/mosaic/sixdeg/h/00345/mosaic_6deg_h00345_1asec.fits?center=298.02,-41.01&size=200pix), one can also download cutouts (see the detailed documentation).

Python code to build a URL:

params = { 'filter': 'h',
           'seqnum': 00317
         }
path = str.format(
    '{filter:1s}/{seqnum:05d}/mosaic_6deg_{filter:1s}{seqnum:05d}_1asec.fits',
    **params)
url = 'serverroot/data/twomass/mosaic/sixdeg/' + path

C code to build a URL:

char url[256];
const char *filter = "h";
const char *server = "serverroot";
int seqnum = 317;
snprintf( url, sizeof(url),
          "%s/data/twomass/mosaic/sixdeg/%s/%05d/mosaic_6deg_%s%05d_1asec.fits",
          server, filter, seqnum, filter, seqnum );

Java code to build a URL:

String filter = "h";
String server = "serverroot";
int seqnum = 317;
String url = String.format( "%1$s/data/twomass/mosaic/sixdeg/%2$s/%3$05d/mosaic_6deg_%2$s%3$05d_1asec.fits",
                            server, filter, seqnum );

Reduced Resolution 6-Degree Mosaic FITS Images

These are located at:

<server><root>/data/twomass/mosaic/sixdeg/{filter:1s}/{seqnum:05d}/mosaic_6deg_{filter:1s}{seqnum:05d}_6asec.fits

Examples:

• <root>/data/twomass/mosaic/sixdeg/h/00345/mosaic_6deg_h00345_6asec.fits
• <root>/data/twomass/mosaic/sixdeg/k/01274/mosaic_6deg_k01274_6asec.fits

A trivial change to the format string in the sample code snippets above suffices to generate these URLs.