AIPS HELP file for OPTELL in 31DEC26

As of Mon Jun 15 11:54:17 2026

HELP SECTION

OPTELL
Type: Adverb (String*4)
Use:  To specify the operation to be used by the TELL verb.
         'ABOR'  Die now, reset file statuses and delete outputs
         'QUIT'  Die now, but save the current output results
         'CHAN'  Change the running parameters
Null Value: None

Verbs:
   TELL..........Send parameters to tasks that know to read them on the
                 fly.

Tasks which support this capability usefully:
   APCLN.........Deconvolves images with B. G. Clark CLEAN method.
                 Can change DOTV, NITER, beam, and other parameters.
   IMAGR.........Wide-field and/or wide-frequency Cleaning / imaging.
                 Can change quite a few parameters.  Turning TV back
                 on is most useful.
   SCMAP.........Imaging plus self-calibration loop with editing
                 Can change several imaging and self-cal parameters.
   SCIMG.........Full-featured imaging plus self-calibration loop with
                 editing.  Can change imaging, editing, and self-cal
                 parameters.
   SDCLN.........Deconvolves images with CLEAN followed by SDI methods.
                 Can change DOTV, NITER, beam, and other parameters.
   UTESS.........Deconvolves multiple images with maximum entropy
                 methods - for images of polarization.  Can change
                 DOTV, NITER, other parameters.
   VTESS.........Deconvolves multiple images with maximum entropy
                 methods.  Can change DOTV, NITER, other parameters.
Tasks which now run too fast for TELL to be really useful:
   ATLOD.........Reads ATCA data in RPFITS format into AIPS.
   FILLM.........Reads VLA on-line/archive format uv data tapes
                 (post Jan 88).  It used to be able to read the data as
                 it was being recorded and so needed special TELL
                 operations to start and stop this.  Now it only reads
                 archived data making changing parameters while it runs
                 inadvisable.
Tasks which support QUIT or ABOR operations only:
   MCUBE.........Builds n+1 (or n) dimensional images from sets of
                 n-dimensional images.
   M3TAR.........Translate Haystack MKIII VLBI format "A" TAR's into
                 AIPS.
   MK3IN.........Translate Haystack MKIII VLBI format "A" tapes into
                 AIPS.

EXPLAIN SECTION