README web version of /home/usg/OPS/MTS/readme_xml/readme_84020701

Principal Investigator Email Address

• lagrange@obs.ujf-grenoble.fr

Estimated Total Execution Time (hours, including overheads)

• 1:30:00

General Description

• Aim: In this run (runB), we need to record saturated images of beta Pictoris
   (herefater Bpic) and saturated images of a PSF star (also called comparison star,
   as in the proposal) (HR2435). We will also record unsaturated images of both stars,
   which will be used as PSF and photometric references).
  
  Each OB consists of:
  	- an acquisition template
  	- 1 science template to get unsaturated images (using the NDL filter) at different
   offsets 
  	- 3 science templates to get saturated images at different offsets
  	
  The run will execute successively :
  	- the Bpic  OB (Bpic_Lp_runB)
  	- the PSF OB (PSF_Bpic_Lp_runB)
  	
  Each OB will be executed in 44 minutes each (see below).
  
  
  *Please, mind the time-critical/execution constraints below*

Waiver Requests

• Waiver requests have been sent :
  - to ask to be allowed to observe beta pic and hr2435 whch are brighter than 5 at
   L'.
  - to ask to execute the PSF OB immediately after the OB of the science target, bpic.
  - to ask to prepare OBs with durations as estimated by p2pp longer than what is
   allocated, but with ACTUAL 
  execution times (44-45 minutes) meeting the time allocation (see REDAME file); this
   is to take into account the discrepancy mainly between the estimated acquisition
   times and the actual acquisition times.
  
  All these items were accepted.

Critical Observing Condition Constraints

• Seeing < 0.6 \\\"
  AM < 1.2 (slightly flexible, up to 1.35)

Time-Critical Aspects

• There are time-critical/execution constraints associated to these observations:
  
  0- As mentionned in the proposal, runB sould be executed in the period Nov-Dec20.
  
  1- In order to avoid the spiders beeing too close to the Bpic disk PA (30 deg) during
   the exposures, we need to start the Bpic OB between 90 and 30 minutes prior to the
   meridian, ie at LST in the range 04h17--05h17. (We recall that the run then lasts
   1h30).
  
  2- Bpic and the PSF should be observed at identical parallactic angles. To do so,
   the Bpic OB should be executed in 45 minutes. In order to take into account the
   uncertainty in the duration of the acquisition process, the OBs as prepared last
   more than 45 minutes (this was done after acceptation of a WR). We ask the Astronomer
   to STOP the OB 44-45 minutes after starting the beta Pic OB and proceed immediately
   with the PSF OB. The PSF OB should last 44-45 minutes as well. Hence the total run
   time will be 2*45 minutes.
  Note that depending on the actual durations of acquisition and overheads, we are
   aware that the last template of each OB may or may not be completely executed or
   even started.
  
  
  3- Please avoid any delay between acquisition and science frames.

Special Execution Requirements

• Important notes:
  - finding charts: in both cases, the brightest objects in the FoV will be the targets
   themselves.
  - both targets will be used as a reference for AO
  - in all cases, the offset patterns assume that the targets are centered in the
   FoV at the beginning of the template (ie prior to the first offset)
  - the DITs of the unsaturated images (using the NDL filter) have been calculated
   using the ETC; they are supposed to avoid the non linearity domain (and it was the
   case in previous runs). If the level of non linearity is reached at acquisition,
   please adjust the DIT so as to avoid this non linearity domain (we are aware nevertheless
   of the 0.175s limit for the mininum DIT).
  - the DITs of the saturated images of bpic have been defined to saturate the core
   of the PSF over a radius of 4 to 5 pixels (and it was the case in previous runs).
   Please adjust the DIT according to the actual observing conditions at the beginning
   of each template.
  - same for the PSF.

Special Calibration Information

• we have assumed (Naco UM, p 27) that twighlight flats with the proper
   settings would be done as part of Naco Calibration plan.

ToO Information

• NA

ToO Activators List

• NA

Is this a Pre-imaging run ?

• false

Pre-imaging Requirements

• NA

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 ?

• YES

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 ?

• YES

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 ?

• N/A

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 ?

• YES

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_ ?

• YES

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)
 ?

• YES

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

• YES

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

• YES

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
 ?

• YES

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 ?

• YES