GB . Data . SdfitsReleaseNotes_1

Release Notes for sdfits Version 1.8 - Released on Wednesday, 15 August 2007

(See all sdfits release notes at Software Report Central.)

The OBJECT column is now 32 characters wide (was 16 in previous releases). This matches the number of characters available in Astrid for the source name.
The SCAN, LASTON, and LASTOFF columns are now long integers (32 bits). In previous versions they were 16 bit integers.
The SCAN, INT, and NSAVE index columns are wider to hold these potentially larger integers (INT and NSAVE are SDFITS columns that are written by GBTIDL but not by sdfits). The index file is used by GBTIDL and is automatically generated from the SDFITS file when the index file version does not match what GBTIDL expects it to be.

VELDEF is now set correctly for true velocities (unsupported in previous versions of sdfits and GBTIDL).
Use of "-append" now always creates a new binary table (that is appended to the existing FITS file) when the FITSVER found in that existing file does not match the FITSVER of the current release.

The polarization and feed information are not always correct for Ka receiver data. The data as filled is correct for the SIG=1 data. For the SIG=0 (reference) data the polarization and feed switch to the other polarization and feed. This will be fixed in the next release of sdfits.
Duplicate scans within the same project sessions still adversely affect the online sdfits filler. Each time a duplicate scan is seen, all occurrences of that scan number will be written to the online SDFITS file. This results in multiple copies of at least one of those scans (more if there is more than one duplication of the same scan number). This will be fixed in a future release of sdfits.
The frequency axis in scans observed with the LSFS procedure is wrong for all but the first integration.
Documentation of sdfits is incomplete. We plan on documenting exactly how sdfits translates the values found in the raw FITS files to the actual values written to the output SDFITS file. This will be available at the next release of sdfits

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Revision r1.3 - 10 Aug 2007 - 20:18 GMT - AmyShelton Parents: SoftwareReportCentral_ReleaseNotes > ReleaseNotes_7_5	Content copyright © 1999-2007 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.


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