RA Range: 12:10

Constraint set (Typical seeing, Transparency,Airmass, FLI, Moon distance): 0.6 2CLR 1.2 0.0 180

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

 
 
This is a simple imaging programme on a Chandra X-ray source,
aimed at detecting the possible optical counterpart.
The X-Ray phenomenology suggests that this source is a radio
quiet neutron star. The expected V magnitude is 26-27 and hence the
OBs have to be carried out in dark time.
Each OB takes 26 exposures of 100sec each. Filters V and R are used.
 
Note that the users have used an occultation mask for three relatively 
bright stars in the field.
The execution of these OBs implies overheads as large as 1 hour, due to
the large numer of read-outs. Unfortunately there is no solution to
the problem, since the expected target position is only a few arcseconds 
away from a V~17.4 star, which cannot be safely masked. The only way is
to keep the exposures short enough not to heavily saturate this 
neighbouring object. The users have set the exposure time (100s) in such
a way that the saturation shouldn't be larger than a factor of 2 in the
R band, according to the ETC.

 

Run status page 69.D-0528A

README of this run:

69.D-0528A.README