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 * The included JCMT source catalog has been updated. '''TO-DO'''  * The included JCMT source catalog has been updated.

Starlink Software Collection — 2021A Release Notes


  • The new HDS-V5 data format (which uses HDF5) is now available. In this release the default will be to write all files as HDS-V4, unless the environmental variable HDS_VERSION is set to 5. This is described in Jenness 2015 2015A&C....12..221 . We are planning to make this file format the default starting with our next release, so we would please request any issues or comments be sent on to us: either on the Starlink users' mailing list, the Starlink developers' mailing list, or sent directly to EAO with the helpdesk AT eaobservatory.org email address.

  • Perl updated to Version 5.32.0.

Changes to Applications

CUPID (ascl:1311.007)

GAIA (ascl:1403.024)

KAPPA (ascl:1403.022)

  • A new program "COMPLEX" was added to manipulate complex NDFs, e.g. to extract the real and imaginary parts, compute the modulus and argument or to combine these parts into a new complex NDF.

ORAC-DR (ascl:1310.001)

ORAC-DR 2021A change log

POLPACK (ascl:1405.014)

SMURF (ascl:1310.007)


  • The included JCMT source catalog has been updated.

SPLAT (ascl:1402.007)

STILTS (ascl:1105.001)

STILTS version history

TOPCAT (ascl:1101.010)

  • Updated to Version ????.

TOPCAT version history

Changes to Libraries


AST (ascl:1404.016)


  • File extensions are now retained in CADC style provenance headers.





  • Updated to Version ????.

STIL version history


  • Updated to v3.450.

Miscellaneous Changes

Changes to Cookbooks and Guides

  • SC/20
  • SC/21
  • SC/22

Known issues

  • There is a known threading problem that prevents the Java application Treeview from working on HDS Version 5 (HDF5) files.

Starlink: 2021A (last edited 2021-11-19 20:31:25 by GrahamBell)