Brief program summary and its significance:
PARTIALLY IONIZED GAS SOURCES (PIGS)
Bright condensations  inmersed in the ionized gas of the HII region
NGC3603 are being studied. 50 objects have been found, ~ half of them are
starlike, in general D < 6arcsec. Two objects present hidden IR sources
(F stars?) and signatures of outflow. O and IR imagery, O, LS and
MO spectroscopy as well as adaptive optic imagery have been carried out
with the ESO 3.6mts and NTT telescope. Next run with HST.
We are looking for similar objects in other
HII regions. Typical objects sizes < 0.1pc. Open questions: are there
fainter/smaller condensations?. Do all PIGS (Partially Ionized Gas Sources)
form stars?, how they take part of the ionizing cluster IMF?. 
Is there a PIGS's mass function?. with regards to the surrounding gas, which
is the density law?, how does behave the interface ionized non-ionized gas?.
With respect to the outflow, kinematics, mass content, etc. With respect to the
star-like objects, are they really star-like?
Future observations: IR imagery/spectroscopy, O, MO and LS spectroscopy.

Required minimum field of view (arcmin):
~ 5min cover the whole NGC3603 field

Required psf (FWHM, profile details):
the smallest the better, but 0.2" is superb to study the star-like sources
and details of the extended ones and their outflows, when present.

Typical target separation if multiple targets per exposure:
10" to 60" for MOS

Signal/noise required per resolution element:
20 to 50 should be OK.
Typical exposure time for this S/N & lunar phase:
Observations carried out with NTT indicate 30 to 60 min.
Anticipated photometric dynamic range required:
normal CCD seems OK, because the PIGS background is HII gas.

What additional photometric calibrations are required?
good flatfielding
If IR, is tip/tilt feasible (consider isoplanatic patch)?
If useful for detailed observations of already know sources

Can this program execute in a queue?
yes, partially.

Anticipated number of separate pointings to complete program:
In NGC3603 could be as high as 50. Others HII regions have to be searched.
Can this program execute in a queue?

Anticipated post-focus instrumentation requirements (filters, gratings,
etc.):

Required instruments (spectral R, filters, wavelength range):

How soon might you need to revisit this target with another instrument?
It would be interesting to have the possibilite of doing alternative
IR and O imagery/spectroscopy. 

Why can't this program execute on the Blanco 4m?
Identifications of PIGS in other HII regions could be done with Blanco
and some of the observations too, but morphological details would
requiere a sharp PSF.
References (for non-mainstream applications):