JWST Galactic Center survey — sgra

1 withheld as superseded. The sources these were staged from are no longer the files they were copied from -- they have been rebuilt or replaced since, so these are the older bytes. Why is not recorded here, and no claim is made about their astrometry: F405N. The 24 detector-frame exposures behind those mosaics are withheld with them: the same astrometric solution is baked into the frames. They will return when the field is re-staged from current products.

Curated color images -- the published renders. Tuned stretches, channels chosen far apart, and each program combined with itself.

Full provenance for these renders: sgra_curated.json -- source path and checksum, the checksum of the bytes served, and whether the AVM astrometry survived resizing. These are curated renders, not staged data products; the mosaics they were made from are in the table below.

Files are served from the JWST root Globus collection; downloading requires a free Globus login. Checksums and full provenance are in MANIFEST.json.

Mosaic images (resampled onto a sky grid)

Open the color wavelength tour Aladin Lite view of the mosaics; the slider steps through color images of three neighboring filters, from the shortest wavelengths to the longest.

HiPS sky maps

Hierarchical (HiPS) renderings of this field's mosaics, for Aladin Lite, Aladin Desktop, or any HiPS client: paste the HiPS URL, or open the layer directly. Served layers as of 2026-11-12T10:27Z; the full list is in the HiPS index and hips_inventory.json.

Tours of this field

• Sgr A* wavelength explorer (linear)

Survey-wide HiPS that include this field

Views across several fields

• HiPS sky viewer Pan and zoom the JWST CMZ and Treasury mosaics over VVV, Spitzer, and MeerKAT context.
• JWST Central Molecular Zone tour A guided Aladin Lite tour across the CMZ fields.
• All Aladin Lite tours Every tour and wavelength explorer, including the linear wavelength tours.
• Index of all release HiPS Every HiPS layer made from the release fields, grouped by field.

Catalogs

Open the catalog manifold viewer prototype 233,535 stars from Sgr A* field NIRCam photometry. Built from this release's catalog files. WebGL; best on a desktop GPU.

Column descriptions (text) What each catalog column means, with units and flag values.

Detector-frame exposures

The 192 individual exposures (21.0GB) the mosaics above were drizzled from, in the original detector frame, carrying the full distortion solution and this pipeline's astrometry as it stood before the images were resampled onto a sky grid. Each group holds exactly the frames behind the matching mosaic, taken from the record that mosaic itself carries of what went into it. Use these to re-drizzle, re-fit, or chase a per-exposure systematic.

The last detector-frame product differs by field and filter: _crf is the Stage-3 outlier/CR-flagged frame where one was written, otherwise the _destreak / _align / _cal frame the mosaic was drizzled from directly. These are the pipeline's live products rather than frozen copies, so a re-reduction writes a new file beside them and a frame here can become an older generation than the pipeline now holds; they are not covered by CHECKSUMS.sha256. Each file records its own provenance in the keywords below, so a downloaded frame can be identified without reference to this page.

Astrometric provenance

Pointing corrections: Offsets_JWST_Brick1939_VIRAC2locked.csv (19KB, modified 2026-11-09T22:44:42)

sha256 4921a768242af4f2c44a6c7886c1f0f35748e65cb2b73d5b6dcf08b7ca657389

The table ships as a frozen, checksummed copy; the detector frames do not, because a re-reduction rewrites their headers in place. This table, not the FITS, is what makes this version's astrometry reconstructible after the frames have moved on.

3 reference-tie measurement(s) exist for this field, and none is shown here: they are not attached to what this version ships — either the version carries no pointing-correction table, or the measurements postdate the release. A later version's page carries the ties that describe it.