README web version of /home/usg/OPS/MTS/readme_xml/readme_77078300

Principal Investigator Email Address

```
forveille@cfht.hawaii.edu
```

Estimated Total Execution Time (hours, including overheads)

```
3h56mn
```

General Description

The goal of the program is to derive precise masses (few % accuracy) for
 3 stars close to the brown
dwarf limit. This will require imaging over several periods to derive their orbits.

Observationnaly this is just plain imaging, wiht one angular scale calibrator thrown
 in to
check the accuracy of the observatory plate scale calibration.

All targets are the brightest star in their respective fields, with magnitudes of
Theta1 OriC V=5.13
LP349-25 V=17.56, K=9.57
PSF_LP349-25  V=11.5, K=9.48
Gl234 V=11.0 K=5.4
PSF_Gl234 V=11.19 K=5.7
Gl494 V=9.75 K=5.58
PSF_Gl494 V=8.46 K=4.42

Waiver Requests

```
No Waiver Request was submitted
```

Critical Observing Condition Constraints

Nothing beyond what's specified in the OB.

Time-Critical Aspects

The two observations of LP349-25 should be spaced as much as feasible,
 to maximize
the time baseline. I have set relatively loose intervals to avoid overconstraining
your schedule, but please try to space the two observations by 3 months if at
all possible (i.e. June 3oth and September 30th would be fine, as would May 15th
and August 15th, but June 3oth and July 1st would be no better than a single observation).

Special Execution Requirements

Please check in real time that the targets do not saturate, and accordingly
 decrease DIT. I have
been conservative in setting DIT, but exceptional seeing (which I have not requested)
 could
bring some of the fainter targets above non-linearity by giving much better Strehl
 than
foreseen by the PS.

Special Calibration Information

Please observe the Orion field together with Gl234 and its calibrator,
 if possible.

ToO Information

```
Not applicable
```

ToO Activators List

```
Not applicable
```

Is this a Pre-imaging run ?

```
false
```

Pre-imaging Requirements

```
Not applicable.
```

Source(s) of Pre-imaging

---(Empty)---

Pre-imaging sources not listed above

---(Empty)---

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 ?

```
N/A
```

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 ?

```
N/A
```

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?

```
N/A
```

If you have preferences which OBs should be executed first, did you make use of the User Priority field in the OBs ?

```
N/A
```

If this is a run that requires coordinated observations with other facilities, did you give proper instructions in the Time-Critical Aspects Section ?

```
N/A
```

If you have PSF reference star OBs, do the names of those OBs begin with PSF_ ?

If there are Finding Charts attached to your OBs, is the field-of-view of at least one of these charts 2' x 2' (with clearly labelled field orientation) ?

Have you clearly marked and labelled your wavefront reference objects R1, R2, R3, ... (as specified in the NAOS Preparation Software) on your Finding Charts ?

Have you specified the magnitude of the brightest object in the field-of-view for each OB ?

Are there objects in any of your fields (including standard stars) which are brighter than the limits specified in the User Manual and on NACO web Pages ?

If the previous answer is yes, have you given a list of OBs and a justification for the brightness limit violation in the general description field ?

```
N/A
```

Last creation of page: Tue Oct 6 15:40:14 2009
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