README web version of /home/usg/OPS/MTS/readme_xml/readme_78018901
Principal Investigator Email Address
Estimated Total Execution Time (hours, including overheads)
General Description
The target, Del Ori, is an eclipsing binary with small separation (1.5mas).
We need to observe the source around the times of maximum separation between
the components at the opposite phases of the orbit. The period is 5.73 days,
and we can accept observations done within +/-3 hours from the time of maximum
separation.
We provide under "Time-Critical Aspects" a full listing of dates and times when
the observations
should be performed, also the orbital phase is listed. We require that any two
runs should
be performed at the phase 0.25 and another two at 0.75. There is no other preference,
all the time intervals provided withing the same orbital phase are equivalent.
The four OBs that are attached to this proposal are exactly equivalent.
Del Ori has V mag=2.3, and K mag=2.9. The calibrator 51 Ori has V mag=4.9 and K
mag=2.2
Since Del Ori is a binary, we expect values of the visibility which will change
significantly
with time/projected baseline. In general, we expect visibilities in K on Ut1-Ut4
between
0.35 and 1.0, and similar in H (the two components have very similar colors).
On the shortest UT3-UT4 baseline, the visibility values will be
between 0.75 and 1.
Waiver Requests
Critical Observing Condition Constraints
We need to observe the source around the times of maximum separation between
the components
in the opposite phases of the orbit. The period is 5.73 days, and we can accept
observations
done within +/-3 hours from the time of maximum separation. We provide under
"Time-Critical Aspects" a full listing of dates and times
when the observations should be performed, and the orbital phase.
Two runs should be performed at the phase 0.25, and another two at 0.75.
Time-Critical Aspects
We can accept observations within a +/-3 hours interval around the epoch
of maximum separation.
Below is a list of dates, and time intervals when the observations can be performed.
Please beware that times and dates are UT. Note that some intervals are shorter
than 6 hours,
because of the rise/set of the stars below 30 degrees above horizon.
We need to observe our source in the opposite phases of the orbit,
therefore two runs should be performed at the phase 0.25, and another two at 0.75.
The orbital phase is provided.
Date&Time of max separation Time interval Phase
10/02/2007 10:02 7:00-9:30 0.25
10/05/2007 6:49 5:00-9:30 0.75
10/08/2007 3:36 5:00-6:36 0.25
10/25/2007 8:21 5:20-9:10 0.25
10/28/2007 5:08 4:00-8:10 0.75
10/31/2007 1:55 3:50-5:00 0.25
11/14/2007 9:52 6:50-8:50 0.75
11/17/2007 6:40 3:40-8:50 0.25
11/20/2007 3:27 2:50-6:20 0.75
12/07/2007 8:11 5:10-8:51 0.75
12/10/2007 4:59 2:00-8:00 0.25
12/13/2007 1:46 1:10-4:45 0.75
12/30/2007 6:30 3:30-7:30 0.75
01/02/2008 3:18 1:00-6:20 0.25
01/05/2008 0:05 1:00-3:00 0.75
01/22/2008 4:49 1:50-5:50 0.75
01/25/2008 1:37 0:50-4:40 0.25
02/11/2008 6:21 3:20-4:30 0.25
02/14/2008 3:08 0:30-4:30 0.75
02/16/2008 23:56 0:30-3:30 0.25
03/05/2008 4:40 1:40-3:00 0.25
03/08/2008 1:27 0:00-3:00 0.75
03/10/2008 22:15 0:00-1:20 0.25
03/28/2008 2:59 23:40-1:30 0.25
03/30/2008 23:46 23:40-1:30 0.75
Special Execution Requirements
Special Calibration Information
ToO Information
ToO Activators List
Is this a Pre-imaging run ?
Pre-imaging Requirements
Source(s) of Pre-imaging
Pre-imaging sources not listed above
Do all your OBs comply with the instrument-specific requirements listed
on the instrument-specific Phase 2 web page ?
If this is a pre-imaging run, did you select PRE-IMAGING for the Observing
Category for each Observing Template ?
Do all your finding charts comply with both the general and instrument-specific
Phase 2 Web Pages ?
If you submitted OBs for standard stars, did you specify the magnitude
and spectral type of all standard stars in the OBs ?
Have you included OBs for any calibrations that you need but which are
not part of the Calibration Plan ?
If you are observing Moving Targets, have you attached suitable ephemeris
files to your OBs?
If you have preferences which OBs should be executed first, did you make
use of the User Priority field in the OBs ?
If this is a run that requires coordinated observations with other facilities,
did you give proper instructions in the Time-Critical Aspects Section ?
Did you indicate for each science star OB the corresponding calibrator
star OB (and vice versa) in the 'Instrument Comments' field ?
Did you check that your chosen calibrator is bright enough for the instrument
mode used ?
If you use calibrator stars which are not in the CalVin database, did
you specify their characteristics in the README file and in the OBs ?
Do you use the same DIT for pairs of science target and associated calibrator?
Are the magnitudes of science target and calibrator within +/- 1 mag
?
Did you verify that your coordinates are as accurate as possible (2Mass
coordinates recommended) and that they include proper motions if available ?
Did you specify the LST range of the calibrators such that they cover
the range from 30 min before the start of the LST range of the science target to
30 min after the end of the LST range of the science target ?
Last creation of page: Tue Oct 6 15:40:15 2009
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