Foto Gallery

The SST prototype: structure and mirrors
3D CAD model of the telescope; the main parts are indicated. The pillar hosts the driving and bearing systems and it is composed by the base, the tower and the fork. The telescope hosts the
optical system and it is composed by the primary mirror's dish, the
quadrupode mast and the secondary mirror's dish. The ballast
counteracts the overhang of the telescope.
3D CAD model of the telescope; the main parts are indicated. The pillar hosts the driving and bearing systems and it is composed by the base, the tower and the fork. The telescope hosts the optical system and it is composed by the primary mirror’s dish, the quadrupode mast and the secondary mirror’s dish. The ballast counteracts the overhang of the telescope.
immagine banco 2
3D view of the optical design implemented for the ray-tracing simulations.
immagine fg_cam_sm
Drawing of the telescope structure with the definitions of the main dimensions and axes.
Finite Element Model of the complete telescope's system. By means of proper analysis, it is used to evaluate the
telescope's performances under pre-defined loading conditions
Finite Element Model of the complete telescope’s system. By means of proper analysis, it is used to evaluate the telescope’s performances under pre-defined loading conditions.
Glass shell bent to the profile of the
outer ring of the telescope primary mirror.
Glass shell bent to the profile of the outer ring of the telescope primary mirror.
Detailed drawing of the telescope dish and mast structure.
Detailed drawing of the telescope dish and mast structure.
The integration mold for the realization of the M1 mirror segments.
The integration mold for the realization of the M1 mirror segments.
Final design of the M1 segments supporting triangle. It is visible the tangential restrain that support the mirror weight, the fixed point and the two axial actuators.
Final design of the M1 segments supporting triangle. It is visible the tangential restrain that support the mirror weight, the fixed point and the two axial actuators
Detailed drawing of the M2 supportingstructure. The large secondary mirror is sustained by means of load-spreaders (at the actuators end) as well as tangential
restrains.
Detailed drawing of the M2 supporting structure. The large secondary mirror is sustained by means of load-spreaders (at the actuators end) as well as tangential restrains.
supporto_M1
Photographic picture of the supporting and alignment structure of the primary mirror segments. Clearly visible are the pretensioned springs; they are calibrated to counteract the the pressure generated by winds blowing up to 120 km/h. An aluminum plate is mounted as mirror dummy.
Final design of the M1 segments supporting triangle. It is visible the tangential restrain that support the mirror weight, the fixed point and the two axial actuators.
Photographic picture of a mirror segment’s prototype. The mirror has the off-axis aspherical profile required by the outer ring of the optical layout. It has been manufactured at the INAF-Osservatorio Astronomico di Brera with the glass Cold-Shaping technology. PVD (Physical Vapor Deposition) has been used to apply the reflecting coating; it is made of a multilayer of pure dielectric materials whose thicknesses are optimized to have a filtering behavior with the reflecting band between 350 nm and 650 nm.
The SST prototype: camera
immagine banco 1
Structural model of the focal surface with some mock-ups of the Photons Detection Modules.
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Close view of the first serie of the mechanical demonstrators of the "pyramidal" light guides.
Picture of the Silicon-based sensor composing
the telescope camera (front view).
Picture of the Silicon-based sensor composing the telescope camera (front view).
Silicon-based sensor mounted on an ad-hoc PCB
with embedded thermal sensor (back view).
Silicon-based sensor mounted on an ad-hoc PCB with embedded thermal sensor (back view).
Nano-picture of the Silicon-based sensor.
Nano-picture of the Silicon-based sensor.
The MST mirrors and calibration system
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Project of the "outdoor measuring facility" for CTA mirrors under installation in Merate.
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Project of the "outdoor measuring facility" for CTA mirrors under installation in Merate.
MST pad1
Stainless steel interfaces for the MST mirrors realized at the Merate mechanical workshop.
MST pad2
Manufacturing of the MST mirrors interfaces: milling phase.
MST pad3
Manufacturing of the MST mirrors interfaces: lathing phase.
MST montaggio
Installation of the "outdoor measuring facility".
MST mold
The mold used for the MST mirrors production under measurement at Media Lario Technologies.
Full-scale mirror prototype for the MST telescope. The PSF at the best focus is less than 0.5 mrad (the requirement was 1 mrad).
Full-scale mirror prototype for the MST telescope. The PSF at the best focus is less than 0.5 mrad (the requirement was 1 mrad).
Production of the first MST mirror prototypes. The picture has been taken by the manufacturer (Media Lario Technologies).
Production of the first MST mirror prototypes. The picture has been taken by the manufacturer
(Media Lario Technologies property).
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Credits: Rodolfo Canestrari - Mauro Fiorini - Rachele Millul - Angelo Mistò - M.Rosa Panzera