Caveats and Unimplemented Features
The MAST Mission Search interfaces currently lack certain intended, but as yet unimplemented features. Many of these features would affect all of these interfaces, but some affect only JWST. In most cases these features are offered in the MAST Portal.
Streaming data downloads through the browser are limited to 1.0 TB of uncompressed data (which works out to a zip file of about 100 GB). This limit is actually considerably higher than for the MAST Portal.
Common Caveats
The following limitations apply to MAST Mission-specific search interfaces:
- There is no data previewer
- There is no tool for visualizing spatial footprints of the data on the sky, analogous to AstroView in the Portal
- Retrieving data in bulk with scripts is limited to Curl; support for Python is not yet available
- There is no support for download through astroquery.mast using the MastMissions module
- There is no support for altering the order or the width of columns in the Search Results table
JWST Caveats
The following limitations apply to the MAST JWST Search interface:
- Planned JWST observations are not searchable
- Only the highest-level Guide Star products are available; lower-level product types (
_uncal,etc.) are not currently available for download - No support for purely "Guide Star" searches (those without accompanying science observations)
- Certain non-FITS Level-3 products, notably the
_phot.ecsvproducts, are grouped with L-2 products. They are also not indicated in the Search Results table in the Product Levels column. This is a side-effect of a problem in the back-end database. You may need to include a wider range of products in the download overlay to include them.