PRL Near Infrared Camera NICMOS-3

Physical Research Laboratory (PRL), Ahmedabad operates an Astrophysical Observatory equipped with an Infrared Camera NICMOS.3 (PRLNIC).In this paper characteristics of this camera like dark current, read noise, gain and linearity are discussed.The dark current is found to be quite different in four quadrant varying from 15e^-/s in one quadrant to 82e^-/sec in other quadrant.Non linearity is found at both the end of the signal:at low signal level (below 1000ADU)and on the higher end (above 12000ADU)the response becomes non-linear.The gain in four quadrant is nearly same.