f4 (blur ) f3 (1 ) >>> f2 (0.3) f2 (0.3) evoluzione di ….ragazzoni et al. spie 2006...
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f4 (blur f4 (blur ))
f3 (1 ” ) f3 (1 ” ) >>>>>>
f2 f2 (0.3”)(0.3”)
evoluzione di ….Ragazzoni et al. SPIE 2006evoluzione di ….Ragazzoni et al. SPIE 2006
Telescope slitlets pupil filter,grism piezo detectorTelescope slitlets pupil filter,grism piezo detector
4’ x 4’= 4’ x 4’= 40 mm40 mm
4’ x 4’= 4’ x 4’= 30 mm30 mm
4’ x 4’= 4’ x 4’= 20 mm20 mm
Circa 50 cm…?Circa 50 cm…?
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3 Deg.2
…Camera Front End
F. Pedichini , A. Di Paola, R. SpezialiINAF - OAR
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detector video-ck-data connectorsdetector video-ck-data connectors
CCD o C-MOS da 1000 x 1000 pixCCD o C-MOS da 1000 x 1000 pix20 micron pixel = 0.3”20 micron pixel = 0.3”8-10 Slitlets da 15”-20” posizionabili stile FORS8-10 Slitlets da 15”-20” posizionabili stile FORSRON 10-2 e- >> ROT 2-15 secRON 10-2 e- >> ROT 2-15 secOn Board Data Store On Board Data Store I.P. Data Link and Command InterfaceI.P. Data Link and Command InterfaceWi-Fi o data BUS ?Wi-Fi o data BUS ?Nulla da programmare ! Tutto hard wired come unaNulla da programmare ! Tutto hard wired come unaPOCKET DIGITAL CAMERAPOCKET DIGITAL CAMERA
Cooling+heat exc. Cooling+heat exc.
PWSPWS +24V+24V
I.P. dataI.P. datain - outin - outData storeData store
Imaging modeImaging mode
Spectro modeSpectro mode
….Febbraio 2008…
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CAMERA CORE
Ethernet + Vdc
2000 camere x 5 Watt = 10 Kw……!
I/O
PWS
Fluid- Cooling
Piezo actuators push-pull delle fendituree movimentazione componenti ottici
Ultima lente
Lenslet array
CMOS detector
PeltierHeat Pipe
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SENSOREPixel da 20 micron interline transferNo shutter meccanicoBack IlluminatedMPP Inverted mode limita la dark 200e- /sec a 27 C si riduce a 0.1 a –30 C e <0.01 a –50 C dati e2V ASIC controller
800 x 800 pixelSlow scan ron 3-4e-
Potente Peltier cooler Tot. Power <15-25W
3’ @ 8m. F#4
3’ @ 8m. F#2
30 mm
15 mm
7.5 mm
1.0E-03
1.0E-02
1.0E-01
1.0E+00
1.0E+01
1.0E+02
1.0E+03
-60 -40 -20 0 20 40
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Soluzione C-MOS….Pixel da 4/20 micron con lensletNo shutter meccanicoq.e. da 400 a 900 nm >80%Dark current a 300 K di 2pA/cm2ovvero 2e-/s per pixel a 27 C …. 1e- ogni 1000 sec a –30 C J. Beletic SPIE 2008
1.0E-05
1.0E-04
1.0E-03
1.0E-02
1.0E-01
1.0E+00
1.0E+01
-60 -40 -20 0 20 40
On chip camera 800 x 800No controller RON 2-3e-Power <1W@20Hz (Fps)Letture multiple e ROIPiccolo Peltier cooler Tot. Power <5W
3’ @ 8m. F#4
30 mm
7.5 mm
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J. Beletic SPIE 2008
4’ @ 8m. F#2
37.2 mm
18.6 mm
9 mm
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Microattuatori Piezotecnologia “worm-drive”ovvero una barra Ǿ1-2mmguidata da un cursore attivo di Ǿ4mmcorsa di diversi cm, risoluzioni micrometriche, velocita’ di cm/s
4’ @ 8m. F#4
4’ @ 8m. F#2
37.2 mm
18.6 mm
9 mm
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Data Flux….Data storage….Data Management….
P.O.E.Power Over Ethernet
3Amp @ 3.3 e 5 Volt 15W!Ok per un network di moduli powered via Gigabit Hub
Switch
2000 x 2 x 1Mpix=4G byte x frame…!Read Out asincrono durante l’integrazione4GB/20 sec = 200 Mb/s >> OK!If 2 frame/min >> 5 TB / nightDisplay (40 x 40 Kpix)…..? Rebin 1/10 visibile con 4HD
P.O.E.HubP.C.
UserCameras
Main Hub
Archive
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Research & Development items:
1. ASIC controller x CCD 2. Sensori CMOS astronomical grade3. Custom lenslet array4. Cooling system5. Micro attuatori6. Power Over Ethernet7. Cablaggio, connettori8. Data storage facility9. Interfaccia utente x migliaia di
fenditure10.Software di diagnostica e
funzionamento11.Very fast lan architecture12.Display
Le tecnologie descritte sono attuali e miglioreranno durante lo studio dello strumento……