SDW 2005, TaorminaReiss et al., We Must be MAD1 We Must be MAD Pushing FIERA to its Limits Roland Reiss, Andrea Balestra, Claudio Cumani, Christoph Geimer, Javier Reyes, Enrico Marchetti, Joana Santos European Southern Observatory ( Karl-Schwarzschild-Str. 2 D Garching by Munich, Germanyhttp://

SDW 2005, TaorminaReiss et al., We Must be MAD2 We Must be MAD Pushing FIERA to its Limits MAD (Multi conjugate Adaptive optics Demonstrator) employs 5 CCDs in total 3 CCDs for Shack-Hartmann Wavefront Sensing (SHWFS) 2 CCDs for Layer-Oriented Wavefront Sensing (LOWFS)

SDW 2005, TaorminaReiss et al., We Must be MAD3 SHWFS vs. LOWFS Mode SHWFS: –3 CCDs –same frame rate –same binning factor –12 video channels (625 kpix/sec each) –window 64x64 per CCD LOWFS: –2 CCDs, –frame rate ratios of 2:1 and 4:1 –binning factors (2x2 and 4x4) –8 video channels (625 kpix/sec each) –Window 80x80 per CCD

SDW 2005, TaorminaReiss et al., We Must be MAD4 Mechanical Constraints Limited head size (96 x 68 x 30 mm 3 ) High flexibility of electrical connections required Peltier cooled CCD39- 01bi from e2v

SDW 2005, TaorminaReiss et al., We Must be MAD5 Performance (SHWFS) Frame rate 400 Hz (64 x192 pixels). Average pixel rate 4.9 Mpixel/sec. Burst pixel rate 7.5 Mpixel/sec. 400Hz approx. 6 e-RMS.