README web version of /home/usg/OPS/MTS/readme_xml/readme_76034100

Principal Investigator Email Address

• michele.bellazzini@bo.astro.it

Estimated Total Execution Time (hours, including overheads)

• 2h 58m

General Description

• This project is aimed to obtain deep V and I photometry of a newly discovered
   stellar system (Bo A) in the background of the globular cluster 47 Tucanae, most
   probably a star cluster belonging to the Small Magellanic Cloud (see Bellazzini,
   Pancino & Ferraro, A&A, 435, 871,
  a small and deep image of the object can be found in the paper).
  The apparent diameter of this cluster of faint stars is ~30 arcsec. The coordinates
   attached to the OBs have been computed to place the center of Chip #45 of the SUSI
   camera (see finding chart). Two OBs with priority 1 takes series of 5 X 600s images
   in V and in I, the other two OBs (priority 2) add 3 X 600s V and I exposures.
  
  Since all the OBs refers to (exactely) the same field, the attached finding chart
   is the same for all OBs

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• Sub-arcsec seeing and dark sky are required. The quality of the night
   shoudn't necessarily be "photometric" since we already have calibrated photometry
   in the field.

Time-Critical Aspects

• The observations can be performed at any time 47 Tucanae is visible -
   at low AM - from La Silla, i.e from October to January.

Special Execution Requirements

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Special Calibration Information

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ToO Information

• ---(Empty)---

ToO Activators List

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Is this a Pre-imaging run ?

• false

Pre-imaging Requirements

• ---(Empty)---

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