-1.cm -1.5cm =16.cm =24.cm \#1 \#1[\#1]{} \#1 5774[7]{}

**THE “PISCO” SPECKLE CAMERA AT PIC DU MIDI OBSERVATORY[^1]**

**J.-L. Prieur$^*$, L. Koechlin$^*$, C. André$^*$, G. Gallou$^*$, C. Lucuix$^*$**

*$^*$Observatoire Midi-Pyrénées, 14, Avenue E. Belin, F-31400 Toulouse, France.*

[**Abstract:**]{}

We present a new speckle camera designed and built at Observatoire Midi-Pyrénées. This focal instrument has been used for two years with the 2-meter Bernard Lyot Telescope of Pic du Midi observatory. It can be set in various operating modes: full pupil imaging, masked-pupil imaging, spectroscopy, wave-front sensor and stellar coronagraphy, hence its name “PISCO” (“Pupil Interferometry Speckle COronagraph"). Restored images of double and triple stars have demonstrated its capabilities in providing close to diffraction limited images (0.06$\,$ in V). PISCO has been fully tested and is now ready to be used by the whole astronomical community. [**1. Introduction**]{}

10000 This speckle camera was designed and built between 1991 and 1994 by the “Aperture synthesis team” of Observatoire Midi Pyrénées (OMP), as a new focal instrument for the 2 meter Télescope Bernard Lyot (TBL) at Pic du Midi. The aim was to take advantage of the good seeing quality of that site.

The optical design was chosen such that a pupil plane would 