RA Range: 16.7h - 18.7h

Constraint set (Typical seeing, Transparency,Airmass, FLI, Moon distance): 1.3-2.0 1PHO-2CLR 1.5 0.1 50

Pre-imaging run?	No!	Chilean run?	No!	Special calibrations?	Yes!
Time critical?	No!	ToO?	No!	Carry-over run?	No!

 
 
This programme has two main components, which may be considered
to be independent:
1. Qualitative imaging of the area surrounding the open cluster
   Westerlund 1 in narrow bands. The sky conditions required for
   this part of the programme are not very strict.
2. Main component consists of imaging of the area of the open cluster
   Westerlund 1 (Wd 1) in all broad-band UBVRI filters in order to derive
   accurate photometry. This field is very reddened. For this reason,
   program needs very deep U-band and B-band exposures. Also for this
   reason, it needs extra standard fields containing faint and red stars.
   Therefore, in ADDITION to the standard calibration, PI are requested
   extra calibration fields for which OBs were submitted. One
   field containing faint and red Landolt standards should be observed at
   approximately the same airmass as the cluster. In addition, one
   E-region has been selected for determination of the extinction.

So, this part of the program has next very strict constraints:
1) It must be carried out in dark time.
2) It must be observed at moderate airmass at worse.
3) The whole programme has to be carried out in one night.
4) The Landolt standard field must be observed at an airmass
   comparable to that during the observation of the cluster.
5) The E7 region must be observed at 4 different airmasses throughout
   the night in order to monitor the extinction. Obviously, the other
   two fields (target + Landolt) must be observed between these
   observations.

Standard calibrations for UBVRI filters are requested.
The narrow-band imaging programme requires H-alpha and [SII] skyflats
which are included as three OBs for each type of skyflat in case the
observations are taken during more than one night. PI don't need all
of them to be executed if the three fields are observed during the same
night. The additional OBs for observations of all standards (Landolt and E7)
are submitted.

For more details, please, see README file.

 
 

Run status page 69.D-0327B

README of this run:

69.D-0327B.README