Open Access

Table 2

Main characteristics of the AO test bed PAPYRUS.

Telescope
Diameter 1.52 m
Deformable Mirror
Number of actuators 241 (Cartesian 17 × 17)
Wavefront Sensing path
Spectral range 400-950 nm
Modulation 3-10 λ∕D (usually 5)
Pyramid field of view 30″
GSC camera sampling 2.7 pix∕(λ∕D)
GSC camera maximum field of view 47.7″ × 35.8″
Real Time Computer Matlab homemade
Frequency (w.o. OG monitoring) up to 700 Hz
Frequency (w. OG monitoring) up to 400 Hz
Delay ~3 frames @ 500 Hz

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