UK ALMA ARC NODE

e-Merlin Observation Support Tool


Version 0.1

Array Instrument
Sky Setup Source model Choose a library source model
Upload a FITS file Not Currently supported.
Declination Ensure correct formatting of this string (+/-00d00m00.0s). Must be exactly this format.
Image peak / point flux in  Set to 0.0 for no rescaling of source model
Observation Setup Central frequency in GHz The value entered must be within an e-Merlin band
Bandwidth in  Use broad for continuum, narrow for single channel
Pointing strategy Currently only single pointings are available
Start hour angle Deviation of start of observation from transit
Phase Cycle The length of time in seconds between cutting to a phase calibrator (arbitrarily limited to 0s to 600s)
On Phase Calibrator The length of time in seconds spent observing phase calibrator (arbitrarily limited to 0s to 600s)
On-source time in  Per pointing for Mosaics.
Number of visits How many times the observation is repeated
Number of polarizations This affects the noise in the final map
Corruption Atmospheric conditions Determines level of noise due to water vapour
Imaging Imaging weights This allows a resolution / sensitivity trade-off
Perform deconvolution? Apply the CLEAN algorithm to deconvolve the image
Output image format CASA format images are returned as a tar file
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