... Also the measured signals are affected by detector transients, altering the final results considerably. We present the design and the main features of a software package, developed in order to support the absolute calibration of the instrument. ... In case the fit is not successful, the average of the last 30% of the data is taken as the final signal. ... The two different symbols represent individual calibrations of the final background signals, using the first or the second FCS-signal. ...

... Also the measured signals are a#ected by detector transients, altering the final results considerably. ... The sequence is bounded by two measurements of the FCS , to fix the responsivity for the baseline correction 0 200 400 600 800 1000 measurement time [s] 0.00 0.02 0.04 0.06 0.08 0.10 Volt/second bg source fitted baseline 2. FCS 1. FCS source initial drifting signal corrected signal bg FCS source background signal internal calibration signal source signal corrected ...

IRAF/STECF 2-D spectrum point source / background decomposition package . ... The general problem is one of spectral decomposition - of separating the spectra of the point sources from the background. ... The STECF IRAF layered package "specres" provides two tasks to extract point source spectra from 2-D images (either longslit, multislit or cross-dispersed) and decompose the full background over the image. ... A Point Source Function spectrum image is required as a 2-D spectrum. ...