Date: Mon, 25 Apr 2005 07:19:30 -0400

Dear Meri,

Thank you very much for BK114C schedules.

I am also writing with a polite request. Since both BK114C and BK114D are
fast switching experiments and I already at this point get only about 10s
of data per switching cycle (because of how slow GBT is), it is very
important to keep the CORAVG parameter to a minimum. As you are probably
aware, I have a request pending with Joan to correlate BK114C with 4 passes
(CORCHAN=512 and CORAVG=4) and to correlate BK114D with 2 passes
(CORCHAN=256 and CORAVG=3). Once the number of correlator passes for these
two experiments is agreed upon, is it kindly possible if you could set the
CORAVG parameter to a minimum value allowed by the given number of the
correlator passes? Also, Alex Kraus recently informed me that EB could not
participate in BK114D (sky frequency too low), which should lower the
correlator data rate and thus allow us to lower the CORAVG even further for
this experiment. I would greatly appreciate this small adjustment to
CORAVG.

Best Regards,

Paul



Date: Tue, 19 Apr 2005 10:14:00 -0600 (MDT)
From: Scheduling Officer <schedsoc@aoc.nrao.edu>
To: Craig Walker <cwalker@aoc.nrao.edu>
Cc: Jim Ulvestad <julvesta@aoc.nrao.edu>, Barry Clark <bclark@aoc.nrao.edu>,
    "VLBI Observers (Aspen only)" <vlbiobs@aoc.nrao.edu>,
    Mark Claussen <mclausse@aoc.nrao.edu>
Subject: Re: BK114C schedule (fwd)

Craig:  In Mark's absence, could you help advise the analysts about
this UTPM issue?  Thanks.  - Joan

***********************************************************************
VLA/VLBA Scheduling Officers                          schedsoc@nrao.edu
NRAO, Socorro, New Mexico, USA       http://www.aoc.nrao.edu/~schedsoc/
***********************************************************************

On Tue, 19 Apr 2005, Jim Ulvestad wrote:

> Mark's mother is seriously ill and he has left town.  Not sure
> when he'll be back.
> 
> Jim
> 
> Scheduling Officer wrote:
> 
> >Lisa, based on a science addendum provided by Paul, we have approved
> >correlation with corchan=512 for BK 114C and BK 114E.
> >
> >Mark, the .sum file for BK 114C requested delaying correlation by a
> >week to get the best UTPM values in the jobs.  As contact for this
> >proposal, could figure out whether or not such a delay is essential
> >to the proposal's success, and advise the analysts accordingly?
> >


Fellow Analysts: Please note modes are switching and two passes (at least)
will be needed to bring the rate down. Earlier epochs show that the
actual correlation rates tend to be much lower than the sched estimation.
LF