1. Pushing FIERA to its Limits Reiss et al., We Must be MAD
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, Germany
SDW 2005, Taormina
Reiss et al., We Must be MAD

2. 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, Taormina
Reiss et al., We Must be MAD

3. Reiss et al., We Must be MAD
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, Taormina
Reiss et al., We Must be MAD

4. Mechanical Constraints
Limited head size (96 x 68 x 30 mm3)
High flexibility of electrical connections required
Peltier cooled CCD39-01bi from e2v
SDW 2005, Taormina
Reiss et al., We Must be MAD

5. Reiss et al., We Must be MAD
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.
SDW 2005, Taormina
Reiss et al., We Must be MAD