README web version of /home/usg/OPS/MTS/readme_xml/readme_80503300

Principal Investigator Email Address

```
pietu@iram.fr
```

Estimated Total Execution Time (hours, including overheads)

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2hrs
```

General Description

The presence of a massive giant planet (located at 30 AU, 0.21") to the
 young star LkCa15 is suspected by sub_mm and spitzer observations.  We then propose
 to use four-quadrant phase mask coronography to possibly resolve and characterize
 this light and cool companion. The centering behind the mask is very important (please
 adjust it whenever asked). 

A PSF star (GSC01863-0168) must be observed just after LkCa15 to remove the star
 contribution and also reduce the possible impact of differential aberrations in
 our final reduced image.

- LkCa15         : 04 39 17.779 +22 21 03.52, *V=12.1, K=8.16, K5V*
- GSC01863-01686:  05 56 03.672 +22 51 07.30*, V=11.7, K=8.22, K2V

Four-quadrant phase mask coronography is used with the S13 camera. LkCa15 and its
 reference are observed at two position angles 0deg and +33deg. Then, please check
 the following sequence:
1- ACQ. Record acquisition images at two detector positions to remove the sky and
 use them as photometric references 
2- OBS. Once the 4QPM centered on the star, check/adjust the centering after each
 individual template and please adjust the DIT to stay within the detector linearity
3- OBS. Start the PSF OB just after the science one

No nightime calibrations, but please ask for 4QPM flatfield in daytime.

Thank You!

Waiver Requests

```
No Waiver Request submitted
```

Critical Observing Condition Constraints

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none
```

Time-Critical Aspects

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none
```

Special Execution Requirements

A PSF star (GSC01863-01686) must be observed just after LkCa15.

Special Calibration Information

A PSF star (GSC01863-01686) must be observed just after LkCa15.
No nightime calibrations, but please ask for 4QPM flatfield in daytime.

ToO Information

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none
```

ToO Activators List

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none
```

Is this a Pre-imaging run ?

```
false
```

Pre-imaging Requirements

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none
```

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 ?

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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 ?

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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 15:40:22 2009
If you have comments, please contact usd-help@eso.org