Patches to 31DEC01

You will find patches to known bugs in 31DEC01 here.

The following is a list of pointers to the different patches in this document.

1. SAD, JMFIT, and IMFIT fail to handle the primary beam correction properly for offset fields. 2002-02-11
2. IMAGR failed to apply the IMAGRPRM(11) parameter to the peak in the Clean windows. 2002-02-19
3. SPLAT failed to average spectral channels properly for multiple IFs. 2002-06-20
4. BPASS failed to include the first record of each SOLINT interval except the first. 2002-09-16

The remainder of this document is comprised of the patch descriptions pointed to by the above references.

Task:

SAD, JMFIT, IMFIT

Summary:

These tasks used the phase reference position for the primary beam correction and a pixel offset from the pointing position for the delay beam correction. Fixed to use a correct angle offset from the pointing position for both.

Files:

/31DEC01/APL/SUB/ELIPSQ.FOR
/31DEC01/APL/PGM/SAD.FOR
/31DEC01/APL/PGM/NOTST/JMFIT.FOR
/31DEC01/APL/PGM/NOTST/IMFIT.FOR

Fix:

1. Fetch the files listed above and place them in the corresponding areas ($APLSUB, $APLPGM, $APGNOT, $APGNOT, respectively) on your system.
2. COMRPL $APLSUB/ELIPSQ
3. COMLNK $APLPGM/SAD
4. COMLNK $APGNOT/{IMFIT,JMFIT}

Documentor:

Eric W Greisen

Date:

2002-02-11

Task:

IMAGR

Summary:

IMAGRPRM(11) is meant to give preference to high resolution fields over low resolution ones to overcome the natural and opposite bias in the multi-resolution Clean. Late in December 2000, some parentheses were lost and the scaling was applied to the average in the Clean windows (5 %) but not the peak (95 %).

Files:

/31DEC01/Q/SUB/OOP/QCLEAN.FOR

Fix:

1. Fetch the file listed above and place it in the corresponding area ($QOOP on your system.
2. COMRPL $QOOP/QCLEAN
3. COMLNK $QPGOOP/{IMAGR,SCIMG,SCMAP}

Documentor:

Eric W Greisen

Date:

2002-02-19

Task:

SPLAT

Summary:

SPLAT, when averaging spectral channels from a larger number to a smaller number greater than 1, made an addressing error under some conditions. In particular, if the user-specified (ECHAN-BCHAN+1)/CHANNEL was not an exact integer, the data from IFs > 1 in the output would be incorrect.

Files:

/31DEC01/APL/PGM/NOTST/SPLAT.FOR

Fix:

1. Fetch the file listed above and place it in the corresponding area ($APGNOT on your system.
2. COMLNK $APGNOT/SPLAT

Documentor:

Eric W Greisen

Date:

2002-06-20

Task:

BPASS

Summary:

BPASS had a bug that caused it to ignore the first record of each SOLINT interval except for the first interval.

Files:

/31DEC01/Q/PGM/NOTST/BPASS.FOR

Fix:

1. Fetch the file listed above and place it in the corresponding area ($QPGNOT on your system.
2. COMLNK $QPGNOT/BPASS

Documentor:

Eric W Greisen

Date:

2002-09-16