[evlatests] Referenced Pointing, with Durations

Bryan Butler bbutler at nrao.edu
Thu Aug 30 23:08:23 EDT 2007


we know this won't work.  it's a bug in obs2script (and maybe in TelCal too, 
don't know about that).  there is no reason to continue to test reference 
pointing with durations until that bug is fixed.

	-bryan


On 8/30/07 16:11, Rick Perley wrote:
>     Following the successful recovery of referenced pointing with 
> stop-time files, we tested to see if the procedure works with files in 
> Durations. 
> 
>     Answer:      It doesn't. 
> 
>     Details:
> 
>     Observations were made of 3C273, at Kband.  Following an X-band 
> referenced pointing determination, four short scans followed -- two with 
> the offset solution applied, two with it not, alternating.  This cycle 
> (including the reference pointing determination) was repeated once. 
>     Ken confirms that offset solutions were made.
>     The subsequent amplitudes show no difference whatever between the 
> 'on' and 'off' states. 
> 
>     Until this bug is squashed, high-frequency observations (especially 
> in daytime) should be made using stop times.
> 
> 
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