2026-07-30 16:07:18 INFO ::casa Using user configuration file /home/casatest/.casa/config.py 2026-07-30 16:07:18 INFO ::casa loaded config file : /wheeldirectory/casa-6.7.6-14-py3.12.el8/lib/py/lib/python3.12/site-packages/casaconfig/config.py 2026-07-30 16:07:18 INFO ::casa loaded config file : /home/casatest/.casa/config.py 2026-07-30 16:07:18 INFO ::casa 2026-07-30 16:07:18 INFO ::casa config values 2026-07-30 16:07:18 INFO ::casa agg = False 2026-07-30 16:07:18 INFO ::casa cachedir = '/home/casatest/.casa' 2026-07-30 16:07:18 INFO ::casa casaconfig_verbose = 1 2026-07-30 16:07:18 INFO ::casa colors = 'Neutral' 2026-07-30 16:07:18 INFO ::casa data_auto_update = False 2026-07-30 16:07:18 INFO ::casa data_update_interval = 1 2026-07-30 16:07:18 INFO ::casa datapath = ['/opt/casa/data/master', '/opt/casa/data/casatestdata'] 2026-07-30 16:07:18 INFO ::casa iplog = False 2026-07-30 16:07:18 INFO ::casa iplogfile = '/home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_feather_casashell/ipython-20260730-160713.log' 2026-07-30 16:07:18 INFO ::casa log2term = True 2026-07-30 16:07:18 INFO ::casa logfile = '/home/casatest/casa6/casatasks/tests/casashell_tests/work/test_task_feather_casashell/casa-20260730-160713.log' 2026-07-30 16:07:18 INFO ::casa measures_auto_update = False 2026-07-30 16:07:18 INFO ::casa measures_site = ['https://www.astron.nl/iers/', 'https://go.nrao.edu/iers/'] 2026-07-30 16:07:18 INFO ::casa measures_site_interval = 2 2026-07-30 16:07:18 INFO ::casa measures_update_interval = 1 2026-07-30 16:07:18 INFO ::casa measurespath = '/opt/casa/data/master' 2026-07-30 16:07:18 INFO ::casa nogui = False 2026-07-30 16:07:18 INFO ::casa nologfile = False 2026-07-30 16:07:18 INFO ::casa nologger = True 2026-07-30 16:07:18 INFO ::casa pipeline = False 2026-07-30 16:07:18 INFO ::casa skipnetworkcheck = False 2026-07-30 16:07:18 INFO ::casa startupfile = '/home/casatest/.casa/startup.py' 2026-07-30 16:07:18 INFO ::casa user_site = False 2026-07-30 16:07:18 INFO ::casa 2026-07-30 16:07:18 INFO ::casa casarundata version is unknown, this is probably a legacy version not installed by casaconfig 2026-07-30 16:07:18 INFO ::casa measures version is unknown, this is probably a legacy version not installed by casaconfig 2026-07-30 16:07:18 INFO ::casa 2026-07-30 16:07:18 INFO ::casa Checking Measures tables in data repository sub-directory /opt/casa/data/master/geodetic 2026-07-30 16:07:18 INFO ::casa IERSeop2000 (version date, last date in table (UTC)): 2026/07/02/15:15, 2026/06/02/00:00:00 2026-07-30 16:07:18 INFO ::casa IERSeop97 (version date, last date in table (UTC)): 2026/07/02/15:15, 2026/06/02/00:00:00 2026-07-30 16:07:18 INFO ::casa IERSpredict (version date, last date in table (UTC)): 2026/07/29/15:15, 2026/10/27/00:00:00 2026-07-30 16:07:18 INFO ::casa TAI_UTC (version date, last date in table (UTC)): 2026/07/01/15:15, 2017/01/01/00:00:00 Running tests... ---------------------------------------------------------------------- Using user configuration file /home/casatest/.casa/config.py No event loop hook running. Using matplotlib backend: agg CASA 6.7.6.14 -- Common Astronomy Software Applications [6.7.6.14] 2026-07-30 16:07:18 INFO feather::::casa ########################################## 2026-07-30 16:07:18 INFO feather::::casa ##### Begin Task: feather ##### 2026-07-30 16:07:18 INFO feather::::casa feather( imagename='feathered.im', highres='orion_tfeather.im', lowres='orion_tsdmem.image', sdfactor=1.0, effdishdiam=-1.0, lowpassfiltersd=False ) 2026-07-30 16:07:18 INFO feather::Imager::setvp() Setting voltage pattern parameters 2026-07-30 16:07:18 INFO feather::Imager::setvp() Sky position tolerance is 180 degrees 2026-07-30 16:07:18 INFO feather::Imager::setvp() Using system default voltage patterns for each telescope 2026-07-30 16:07:18 INFO feather::imager::setsdoptions() Setting single dish processing options 2026-07-30 16:07:18 INFO feather::imager::feather() 2026-07-30 16:07:18 INFO feather::imager::feather()+ Feathering together high and low resolution images... 2026-07-30 16:07:18 INFO feather::imager::feather() Each input image has a single restoring beam. 2026-07-30 16:07:18 WARN feather::ImageRegrid::regrid You are regridding an image whose beam is not well sampled by the pixel size. Total flux can be lost when regridding such images, especially when the new pixel size is larger than the old pixel size. It is recommended to check the total flux of your input and output image, and if necessary rebin the input to have smaller pixels. 2026-07-30 16:07:18 INFO feather::::casa Task feather complete. Start time: 2026-07-30 16:07:17.546854 End time: 2026-07-30 16:07:17.947128 2026-07-30 16:07:18 INFO feather::::casa ##### End Task: feather ##### 2026-07-30 16:07:18 INFO feather::::casa ########################################## .2026-07-30 16:07:18 INFO image::_setrestoringbeam Will remove any existing beams from image 2026-07-30 16:07:18 INFO Deleted restoring beam(s) 2026-07-30 16:07:18 INFO image::_setrestoringbeam Will use dictionary specified in beam parameter to set the beam(s) 2026-07-30 16:07:18 INFO BeamManipulator::set Setting (global) restoring beam. 2026-07-30 16:07:18 INFO BeamManipulator::set Beam parameters: Major : 78.1052 arcsec 2026-07-30 16:07:18 INFO BeamManipulator::set+ Minor : 77.1472 arcsec 2026-07-30 16:07:18 INFO BeamManipulator::set+ Position Angle : 15.4584 deg 2026-07-30 16:07:18 INFO image::_setrestoringbeam Will remove any existing beams from image 2026-07-30 16:07:18 INFO Deleted restoring beam(s) 2026-07-30 16:07:18 INFO image::_setrestoringbeam Will use dictionary specified in beam parameter to set the beam(s) 2026-07-30 16:07:18 INFO BeamManipulator::set Setting (global) restoring beam. 2026-07-30 16:07:18 INFO BeamManipulator::set Beam parameters: Major : 78.1052 arcsec 2026-07-30 16:07:18 INFO BeamManipulator::set+ Minor : 77.1472 arcsec 2026-07-30 16:07:18 INFO BeamManipulator::set+ Position Angle : 15.4584 deg 2026-07-30 16:07:18 INFO feather::::casa ########################################## 2026-07-30 16:07:18 INFO feather::::casa ##### Begin Task: feather ##### 2026-07-30 16:07:18 INFO feather::::casa feather( imagename='feathered.im', highres='onebeam_int.im', lowres='onebeam_sd.im', sdfactor=1.0, effdishdiam=-1.0, lowpassfiltersd=False ) 2026-07-30 16:07:18 INFO feather::Imager::setvp() Setting voltage pattern parameters 2026-07-30 16:07:18 INFO feather::Imager::setvp() Sky position tolerance is 180 degrees 2026-07-30 16:07:18 INFO feather::Imager::setvp() Using system default voltage patterns for each telescope 2026-07-30 16:07:18 INFO feather::imager::setsdoptions() Setting single dish processing options 2026-07-30 16:07:18 INFO feather::imager::feather() 2026-07-30 16:07:18 INFO feather::imager::feather()+ Feathering together high and low resolution images... 2026-07-30 16:07:18 INFO feather::imager::feather() Each input image has a single restoring beam. 2026-07-30 16:07:18 WARN feather::ImageRegrid::regrid You are regridding an image whose beam is not well sampled by the pixel size. Total flux can be lost when regridding such images, especially when the new pixel size is larger than the old pixel size. It is recommended to check the total flux of your input and output image, and if necessary rebin the input to have smaller pixels. 2026-07-30 16:07:19 INFO feather::::casa Task feather complete. Start time: 2026-07-30 16:07:18.264622 End time: 2026-07-30 16:07:18.930577 2026-07-30 16:07:19 INFO feather::::casa ##### End Task: feather ##### 2026-07-30 16:07:19 INFO feather::::casa ########################################## 2026-07-30 16:07:19 INFO feather::::casa ########################################## 2026-07-30 16:07:19 INFO feather::::casa ##### Begin Task: feather ##### 2026-07-30 16:07:19 INFO feather::::casa feather( imagename='feathered.im', highres='onebeam_int.im', lowres='papersky_standard.sdimage', sdfactor=1.0, effdishdiam=-1.0, lowpassfiltersd=False ) 2026-07-30 16:07:19 INFO feather::Imager::setvp() Setting voltage pattern parameters 2026-07-30 16:07:19 INFO feather::Imager::setvp() Sky position tolerance is 180 degrees 2026-07-30 16:07:19 INFO feather::Imager::setvp() Using system default voltage patterns for each telescope 2026-07-30 16:07:19 INFO feather::imager::setsdoptions() Setting single dish processing options 2026-07-30 16:07:19 INFO feather::imager::feather() 2026-07-30 16:07:19 INFO feather::imager::feather()+ Feathering together high and low resolution images... 2026-07-30 16:07:19 INFO feather::imager::feather() One or both of the input images has per-plane restoring beams. Calling feather in a loop, per plane. 2026-07-30 16:07:19 WARN feather::ImageRegrid::regrid You are regridding an image whose beam is not well sampled by the pixel size. Total flux can be lost when regridding such images, especially when the new pixel size is larger than the old pixel size. It is recommended to check the total flux of your input and output image, and if necessary rebin the input to have smaller pixels. 2026-07-30 16:07:19 WARN feather::ImageRegrid::regrid You are regridding an image whose beam is not well sampled by the pixel size. Total flux can be lost when regridding such images, especially when the new pixel size is larger than the old pixel size. It is recommended to check the total flux of your input and output image, and if necessary rebin the input to have smaller pixels. 2026-07-30 16:07:19 WARN feather::ImageRegrid::regrid You are regridding an image whose beam is not well sampled by the pixel size. Total flux can be lost when regridding such images, especially when the new pixel size is larger than the old pixel size. It is recommended to check the total flux of your input and output image, and if necessary rebin the input to have smaller pixels. 2026-07-30 16:07:20 INFO feather::::casa Task feather complete. Start time: 2026-07-30 16:07:18.932509 End time: 2026-07-30 16:07:19.683944 2026-07-30 16:07:20 INFO feather::::casa ##### End Task: feather ##### 2026-07-30 16:07:20 INFO feather::::casa ########################################## .2026-07-30 16:07:20 INFO feather::::casa ########################################## 2026-07-30 16:07:20 INFO feather::::casa ##### Begin Task: feather ##### 2026-07-30 16:07:20 INFO feather::::casa feather( imagename='feathered.im', highres='orion_tfeather.im', lowres='orion_tsdmem.image', sdfactor=1.0, effdishdiam=-1.0, lowpassfiltersd=False ) 2026-07-30 16:07:20 INFO feather::Imager::setvp() Setting voltage pattern parameters 2026-07-30 16:07:20 INFO feather::Imager::setvp() Sky position tolerance is 180 degrees 2026-07-30 16:07:20 INFO feather::Imager::setvp() Using system default voltage patterns for each telescope 2026-07-30 16:07:20 INFO feather::imager::setsdoptions() Setting single dish processing options 2026-07-30 16:07:20 INFO feather::imager::feather() 2026-07-30 16:07:20 INFO feather::imager::feather()+ Feathering together high and low resolution images... 2026-07-30 16:07:20 INFO feather::imager::feather() Each input image has a single restoring beam. 2026-07-30 16:07:20 WARN feather::ImageRegrid::regrid You are regridding an image whose beam is not well sampled by the pixel size. Total flux can be lost when regridding such images, especially when the new pixel size is larger than the old pixel size. It is recommended to check the total flux of your input and output image, and if necessary rebin the input to have smaller pixels. 2026-07-30 16:07:20 INFO feather::::casa Task feather complete. Start time: 2026-07-30 16:07:19.693741 End time: 2026-07-30 16:07:19.840734 2026-07-30 16:07:20 INFO feather::::casa ##### End Task: feather ##### 2026-07-30 16:07:20 INFO feather::::casa ########################################## 2026-07-30 16:07:20 INFO feather::::casa ########################################## 2026-07-30 16:07:20 INFO feather::::casa ##### Begin Task: feather ##### 2026-07-30 16:07:20 INFO feather::::casa feather( imagename='feathered2.im', highres='orion_tfeather.im', lowres='orion_tsdmem.image', sdfactor=1.0, effdishdiam=1.0, lowpassfiltersd=False ) 2026-07-30 16:07:20 INFO feather::Imager::setvp() Setting voltage pattern parameters 2026-07-30 16:07:20 INFO feather::Imager::setvp() Sky position tolerance is 180 degrees 2026-07-30 16:07:20 INFO feather::Imager::setvp() Using system default voltage patterns for each telescope 2026-07-30 16:07:20 INFO feather::imager::setsdoptions() Setting single dish processing options 2026-07-30 16:07:20 INFO feather::imager::feather() 2026-07-30 16:07:20 INFO feather::imager::feather()+ Feathering together high and low resolution images... 2026-07-30 16:07:20 INFO feather::imager::feather() Each input image has a single restoring beam. 2026-07-30 16:07:20 WARN feather::ImageRegrid::regrid You are regridding an image whose beam is not well sampled by the pixel size. Total flux can be lost when regridding such images, especially when the new pixel size is larger than the old pixel size. It is recommended to check the total flux of your input and output image, and if necessary rebin the input to have smaller pixels. 2026-07-30 16:07:20 INFO feather::::casa Task feather complete. Start time: 2026-07-30 16:07:19.842619 End time: 2026-07-30 16:07:20.060796 2026-07-30 16:07:20 INFO feather::::casa ##### End Task: feather ##### 2026-07-30 16:07:20 INFO feather::::casa ########################################## 2026-07-30 16:07:20 INFO feather::::casa ########################################## 2026-07-30 16:07:20 INFO feather::::casa ##### Begin Task: feather ##### 2026-07-30 16:07:20 INFO feather::::casa feather( imagename='feathered2.im', highres='orion_tfeather.im', lowres='orion_tsdmem.image', sdfactor=1.0, effdishdiam=1000.0, lowpassfiltersd=False ) 2026-07-30 16:07:20 INFO feather::Imager::setvp() Setting voltage pattern parameters 2026-07-30 16:07:20 INFO feather::Imager::setvp() Sky position tolerance is 180 degrees 2026-07-30 16:07:20 INFO feather::Imager::setvp() Using system default voltage patterns for each telescope 2026-07-30 16:07:20 INFO feather::imager::setsdoptions() Setting single dish processing options 2026-07-30 16:07:20 INFO feather::imager::feather() 2026-07-30 16:07:20 INFO feather::imager::feather()+ Feathering together high and low resolution images... 2026-07-30 16:07:20 INFO feather::imager::feather() Each input image has a single restoring beam. 2026-07-30 16:07:20 WARN feather::ImageRegrid::regrid You are regridding an image whose beam is not well sampled by the pixel size. Total flux can be lost when regridding such images, especially when the new pixel size is larger than the old pixel size. It is recommended to check the total flux of your input and output image, and if necessary rebin the input to have smaller pixels. 2026-07-30 16:07:20 SEVERE feather::imager::feather() Caught exception: Beam due to new effective diameter may be smaller than the beam of original dish image 2026-07-30 16:07:20 SEVERE feather::::casa Exception Reported: Error in feather: 2026-07-30 16:07:20 SEVERE feather::imager::feather() Caught exception: Beam due to new effective diameter may be smaller than the beam of original dish image 2026-07-30 16:07:20 INFO feather::::casa Traceback (most recent call last): 2026-07-30 16:07:20 INFO feather::::casa+ File "/wheeldirectory/casa-6.7.6-14-py3.12.el8/lib/py/lib/python3.12/site-packages/casashell/private/feather.py", line 391, in __call__ 2026-07-30 16:07:20 INFO feather::::casa+ task_result = _feather_t( _pc.document['imagename'],_pc.document['highres'],_pc.document['lowres'],_pc.document['sdfactor'],_pc.document['effdishdiam'],_pc.document['lowpassfiltersd'] ) 2026-07-30 16:07:20 INFO feather::::casa+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2026-07-30 16:07:20 INFO feather::::casa+ File "/wheeldirectory/casa-6.7.6-14-py3.12.el8/lib/py/lib/python3.12/site-packages/casatasks/private/task_feather.py", line 36, in feather 2026-07-30 16:07:20 INFO feather::::casa+ imFea.feather(image=imagename,highres=highres,lowres=lowres, 2026-07-30 16:07:20 INFO feather::::casa+ File "/wheeldirectory/casa-6.7.6-14-py3.12.el8/lib/py/lib/python3.12/site-packages/casatools/imager.py", line 413, in feather 2026-07-30 16:07:20 INFO feather::::casa+ return self._swigobj.feather(image, highres, lowres, lowpsf, effdishdiam, lowpassfiltersd) 2026-07-30 16:07:20 INFO feather::::casa+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2026-07-30 16:07:20 INFO feather::::casa+ File "/wheeldirectory/casa-6.7.6-14-py3.12.el8/lib/py/lib/python3.12/site-packages/casatools/__casac__/imager.py", line 1092, in feather 2026-07-30 16:07:20 INFO feather::::casa+ return _imager.imager_feather(self, *args, **kwargs) 2026-07-30 16:07:20 INFO feather::::casa+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2026-07-30 16:07:20 INFO feather::::casa+ RuntimeError: 2026-07-30 16:07:20 SEVERE feather::imager::feather() Caught exception: Beam due to new effective diameter may be smaller than the beam of original dish image 2026-07-30 16:07:20 INFO feather::::casa Task feather complete. Start time: 2026-07-30 16:07:20.068743 End time: 2026-07-30 16:07:20.311361 2026-07-30 16:07:20 INFO feather::::casa ##### End Task: feather ##### 2026-07-30 16:07:20 INFO feather::::casa ########################################## .2026-07-30 16:07:20 SEVERE feather::::casa Exception Reported: Error in feather: the highres parameter must be a path that exists ('' does not exist) 2026-07-30 16:07:20 INFO feather::::casa Traceback (most recent call last): 2026-07-30 16:07:20 INFO feather::::casa+ File "/wheeldirectory/casa-6.7.6-14-py3.12.el8/lib/py/lib/python3.12/site-packages/casashell/private/feather.py", line 389, in __call__ 2026-07-30 16:07:20 INFO feather::::casa+ assert _pc.validate(_invocation_parameters,self.__schema), create_error_string(_pc.errors) 2026-07-30 16:07:20 INFO feather::::casa+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2026-07-30 16:07:20 INFO feather::::casa+ AssertionError: the highres parameter must be a path that exists ('' does not exist) .2026-07-30 16:07:20 INFO feather::::casa ########################################## 2026-07-30 16:07:20 INFO feather::::casa ##### Begin Task: feather ##### 2026-07-30 16:07:20 INFO feather::::casa feather( imagename='feathered.im', highres='orion_tfeather.im', lowres='orion_tsdmem.image', sdfactor=1.0, effdishdiam=-1.0, lowpassfiltersd=False ) 2026-07-30 16:07:20 INFO feather::Imager::setvp() Setting voltage pattern parameters 2026-07-30 16:07:20 INFO feather::Imager::setvp() Sky position tolerance is 180 degrees 2026-07-30 16:07:20 INFO feather::Imager::setvp() Using system default voltage patterns for each telescope 2026-07-30 16:07:20 INFO feather::imager::setsdoptions() Setting single dish processing options 2026-07-30 16:07:20 INFO feather::imager::feather() 2026-07-30 16:07:20 INFO feather::imager::feather()+ Feathering together high and low resolution images... 2026-07-30 16:07:20 INFO feather::imager::feather() Each input image has a single restoring beam. 2026-07-30 16:07:20 WARN feather::ImageRegrid::regrid You are regridding an image whose beam is not well sampled by the pixel size. Total flux can be lost when regridding such images, especially when the new pixel size is larger than the old pixel size. It is recommended to check the total flux of your input and output image, and if necessary rebin the input to have smaller pixels. 2026-07-30 16:07:21 INFO feather::::casa Task feather complete. Start time: 2026-07-30 16:07:20.320015 End time: 2026-07-30 16:07:20.536305 2026-07-30 16:07:21 INFO feather::::casa ##### End Task: feather ##### 2026-07-30 16:07:21 INFO feather::::casa ########################################## 2026-07-30 16:07:21 INFO feather::::casa ########################################## 2026-07-30 16:07:21 INFO feather::::casa ##### Begin Task: feather ##### 2026-07-30 16:07:21 INFO feather::::casa feather( imagename='feathered2.im', highres='orion_tfeather.im', lowres='orion_tsdmem.image', sdfactor=1.0, effdishdiam=-1.0, lowpassfiltersd=False ) 2026-07-30 16:07:21 INFO feather::Imager::setvp() Setting voltage pattern parameters 2026-07-30 16:07:21 INFO feather::Imager::setvp() Sky position tolerance is 180 degrees 2026-07-30 16:07:21 INFO feather::Imager::setvp() Using system default voltage patterns for each telescope 2026-07-30 16:07:21 INFO feather::imager::setsdoptions() Setting single dish processing options 2026-07-30 16:07:21 INFO feather::imager::feather() 2026-07-30 16:07:21 INFO feather::imager::feather()+ Feathering together high and low resolution images... 2026-07-30 16:07:21 INFO feather::imager::feather() Each input image has a single restoring beam. 2026-07-30 16:07:21 WARN feather::ImageRegrid::regrid You are regridding an image whose beam is not well sampled by the pixel size. Total flux can be lost when regridding such images, especially when the new pixel size is larger than the old pixel size. It is recommended to check the total flux of your input and output image, and if necessary rebin the input to have smaller pixels. 2026-07-30 16:07:21 INFO feather::::casa Task feather complete. Start time: 2026-07-30 16:07:20.538187 End time: 2026-07-30 16:07:20.742074 2026-07-30 16:07:21 INFO feather::::casa ##### End Task: feather ##### 2026-07-30 16:07:21 INFO feather::::casa ########################################## .2026-07-30 16:07:21 INFO feather::::casa ########################################## 2026-07-30 16:07:21 INFO feather::::casa ##### Begin Task: feather ##### 2026-07-30 16:07:21 INFO feather::::casa feather( imagename='feathered.im', highres='orion_tfeather.im', lowres='orion_tsdmem.image', sdfactor=1.0, effdishdiam=-1.0, lowpassfiltersd=False ) 2026-07-30 16:07:21 INFO feather::Imager::setvp() Setting voltage pattern parameters 2026-07-30 16:07:21 INFO feather::Imager::setvp() Sky position tolerance is 180 degrees 2026-07-30 16:07:21 INFO feather::Imager::setvp() Using system default voltage patterns for each telescope 2026-07-30 16:07:21 INFO feather::imager::setsdoptions() Setting single dish processing options 2026-07-30 16:07:21 INFO feather::imager::feather() 2026-07-30 16:07:21 INFO feather::imager::feather()+ Feathering together high and low resolution images... 2026-07-30 16:07:21 INFO feather::imager::feather() Each input image has a single restoring beam. 2026-07-30 16:07:21 WARN feather::ImageRegrid::regrid You are regridding an image whose beam is not well sampled by the pixel size. Total flux can be lost when regridding such images, especially when the new pixel size is larger than the old pixel size. It is recommended to check the total flux of your input and output image, and if necessary rebin the input to have smaller pixels. 2026-07-30 16:07:21 INFO feather::::casa Task feather complete. Start time: 2026-07-30 16:07:20.746814 End time: 2026-07-30 16:07:20.932119 2026-07-30 16:07:21 INFO feather::::casa ##### End Task: feather ##### 2026-07-30 16:07:21 INFO feather::::casa ########################################## 2026-07-30 16:07:21 INFO feather::::casa ########################################## 2026-07-30 16:07:21 INFO feather::::casa ##### Begin Task: feather ##### 2026-07-30 16:07:21 INFO feather::::casa feather( imagename='feathered2.im', highres='orion_tfeather.im', lowres='orion_tsdmem.image', sdfactor=1.0, effdishdiam=-1.0, lowpassfiltersd=True ) 2026-07-30 16:07:21 INFO feather::Imager::setvp() Setting voltage pattern parameters 2026-07-30 16:07:21 INFO feather::Imager::setvp() Sky position tolerance is 180 degrees 2026-07-30 16:07:21 INFO feather::Imager::setvp() Using system default voltage patterns for each telescope 2026-07-30 16:07:21 INFO feather::imager::setsdoptions() Setting single dish processing options 2026-07-30 16:07:21 INFO feather::imager::feather() 2026-07-30 16:07:21 INFO feather::imager::feather()+ Feathering together high and low resolution images... 2026-07-30 16:07:21 INFO feather::imager::feather() Each input image has a single restoring beam. 2026-07-30 16:07:21 WARN feather::ImageRegrid::regrid You are regridding an image whose beam is not well sampled by the pixel size. Total flux can be lost when regridding such images, especially when the new pixel size is larger than the old pixel size. It is recommended to check the total flux of your input and output image, and if necessary rebin the input to have smaller pixels. 2026-07-30 16:07:21 INFO feather::::casa Task feather complete. Start time: 2026-07-30 16:07:20.933721 End time: 2026-07-30 16:07:21.147148 2026-07-30 16:07:21 INFO feather::::casa ##### End Task: feather ##### 2026-07-30 16:07:21 INFO feather::::casa ########################################## .2026-07-30 16:07:21 SEVERE feather::::casa Exception Reported: Error in feather: the lowres parameter must be a path that exists ('' does not exist) 2026-07-30 16:07:21 INFO feather::::casa Traceback (most recent call last): 2026-07-30 16:07:21 INFO feather::::casa+ File "/wheeldirectory/casa-6.7.6-14-py3.12.el8/lib/py/lib/python3.12/site-packages/casashell/private/feather.py", line 389, in __call__ 2026-07-30 16:07:21 INFO feather::::casa+ assert _pc.validate(_invocation_parameters,self.__schema), create_error_string(_pc.errors) 2026-07-30 16:07:21 INFO feather::::casa+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2026-07-30 16:07:21 INFO feather::::casa+ AssertionError: the lowres parameter must be a path that exists ('' does not exist) .2026-07-30 16:07:21 INFO feather::::casa ########################################## 2026-07-30 16:07:21 INFO feather::::casa ##### Begin Task: feather ##### 2026-07-30 16:07:21 INFO feather::::casa feather( imagename='feathered.im', highres='papersky_standard.intimage', lowres='papersky_standard.sdimage', sdfactor=1.0, effdishdiam=-1.0, lowpassfiltersd=False ) 2026-07-30 16:07:21 INFO feather::Imager::setvp() Setting voltage pattern parameters 2026-07-30 16:07:21 INFO feather::Imager::setvp() Sky position tolerance is 180 degrees 2026-07-30 16:07:21 INFO feather::Imager::setvp() Using system default voltage patterns for each telescope 2026-07-30 16:07:21 INFO feather::imager::setsdoptions() Setting single dish processing options 2026-07-30 16:07:21 INFO feather::imager::feather() 2026-07-30 16:07:21 INFO feather::imager::feather()+ Feathering together high and low resolution images... 2026-07-30 16:07:21 INFO feather::imager::feather() One or both of the input images has per-plane restoring beams. Calling feather in a loop, per plane. 2026-07-30 16:07:21 WARN feather::ImageRegrid::regrid You are regridding an image whose beam is not well sampled by the pixel size. Total flux can be lost when regridding such images, especially when the new pixel size is larger than the old pixel size. It is recommended to check the total flux of your input and output image, and if necessary rebin the input to have smaller pixels. 2026-07-30 16:07:21 WARN feather::ImageRegrid::regrid You are regridding an image whose beam is not well sampled by the pixel size. Total flux can be lost when regridding such images, especially when the new pixel size is larger than the old pixel size. It is recommended to check the total flux of your input and output image, and if necessary rebin the input to have smaller pixels. 2026-07-30 16:07:22 WARN feather::ImageRegrid::regrid You are regridding an image whose beam is not well sampled by the pixel size. Total flux can be lost when regridding such images, especially when the new pixel size is larger than the old pixel size. It is recommended to check the total flux of your input and output image, and if necessary rebin the input to have smaller pixels. 2026-07-30 16:07:22 INFO feather::::casa Task feather complete. Start time: 2026-07-30 16:07:21.159092 End time: 2026-07-30 16:07:21.886148 2026-07-30 16:07:22 INFO feather::::casa ##### End Task: feather ##### 2026-07-30 16:07:22 INFO feather::::casa ########################################## .2026-07-30 16:07:22 INFO feather::::casa ########################################## 2026-07-30 16:07:22 INFO feather::::casa ##### Begin Task: feather ##### 2026-07-30 16:07:22 INFO feather::::casa feather( imagename='feathered.im', highres='orion_tfeather.im', lowres='orion_tsdmem.image', sdfactor=1.0, effdishdiam=-1.0, lowpassfiltersd=False ) 2026-07-30 16:07:22 INFO feather::Imager::setvp() Setting voltage pattern parameters 2026-07-30 16:07:22 INFO feather::Imager::setvp() Sky position tolerance is 180 degrees 2026-07-30 16:07:22 INFO feather::Imager::setvp() Using system default voltage patterns for each telescope 2026-07-30 16:07:22 INFO feather::imager::setsdoptions() Setting single dish processing options 2026-07-30 16:07:22 INFO feather::imager::feather() 2026-07-30 16:07:22 INFO feather::imager::feather()+ Feathering together high and low resolution images... 2026-07-30 16:07:22 INFO feather::imager::feather() Each input image has a single restoring beam. 2026-07-30 16:07:22 WARN feather::ImageRegrid::regrid You are regridding an image whose beam is not well sampled by the pixel size. Total flux can be lost when regridding such images, especially when the new pixel size is larger than the old pixel size. It is recommended to check the total flux of your input and output image, and if necessary rebin the input to have smaller pixels. 2026-07-30 16:07:22 INFO feather::::casa Task feather complete. Start time: 2026-07-30 16:07:21.889616 End time: 2026-07-30 16:07:22.013090 2026-07-30 16:07:22 INFO feather::::casa ##### End Task: feather ##### 2026-07-30 16:07:22 INFO feather::::casa ########################################## 2026-07-30 16:07:22 INFO feather::::casa ########################################## 2026-07-30 16:07:22 INFO feather::::casa ##### Begin Task: feather ##### 2026-07-30 16:07:22 INFO feather::::casa feather( imagename='feathered2.im', highres='orion_tfeather.im', lowres='orion_tsdmem.image', sdfactor=0.5, effdishdiam=-1.0, lowpassfiltersd=False ) 2026-07-30 16:07:22 INFO feather::Imager::setvp() Setting voltage pattern parameters 2026-07-30 16:07:22 INFO feather::Imager::setvp() Sky position tolerance is 180 degrees 2026-07-30 16:07:22 INFO feather::Imager::setvp() Using system default voltage patterns for each telescope 2026-07-30 16:07:22 INFO feather::imager::setsdoptions() Setting single dish processing options 2026-07-30 16:07:22 INFO feather::imager::feather() 2026-07-30 16:07:22 INFO feather::imager::feather()+ Feathering together high and low resolution images... 2026-07-30 16:07:22 INFO feather::imager::feather() Each input image has a single restoring beam. 2026-07-30 16:07:22 WARN feather::ImageRegrid::regrid You are regridding an image whose beam is not well sampled by the pixel size. Total flux can be lost when regridding such images, especially when the new pixel size is larger than the old pixel size. It is recommended to check the total flux of your input and output image, and if necessary rebin the input to have smaller pixels. 2026-07-30 16:07:22 INFO feather::::casa Task feather complete. Start time: 2026-07-30 16:07:22.014136 End time: 2026-07-30 16:07:22.133354 2026-07-30 16:07:22 INFO feather::::casa ##### End Task: feather ##### 2026-07-30 16:07:22 INFO feather::::casa ########################################## . ---------------------------------------------------------------------- Ran 9 tests in 4.606s OK Generating XML reports...