Fiera 1 & 2 operate synchronously one mosaic half each (0ns)

1. ONE system Different mosaic cameras Multiple Controllers One shutter Fiera 1 & 2 operate synchronously one mosaic half each (0ns) Fiera 3 operates four independent Auxiliary CCDs : First Software camera : Guiding G1 & G2 Second software camera : Image Analysis EF & IF

2. Image Analyser EF Guider 1 S C I E N C E M O S A I C 16 K x 16 K Image AnalyserIF Guider 2

3. SHUTTER CLOSED

4. ASSUMPTION : The System has been set-up with all individual Star& window coordinates for G1 G2 EF IF CCDs have been wiped

5. OPENING SHUTTER NOW

6. Integrate with ‘electronic’ exposure time T1 Integrate with ‘electronic’ exposure time T2 >> T1 G1 EF Continuous LONG Time Integration on MOSAIC with OPEN shutter Integrate with IDENTICAL ‘electronic’ exposure time T2 >> T1 IF G2 Integrate with IDENTICAL ‘electronic’ exposure time T1

7. Readout pre-selected window CCD window G1 EF IF G2

8. Resulting Image (scaled up for demo) CCD window G1 EF IF G2

9. Resulting Image (scaled up for demo) CCD window G1 EF CCD window IF G2 Readout different pre-selected window

10. Resulting Image (scaled up for demo) CCD window Still integrating for typ. 30 sec. G1 EF Continuous LONG Time Integration on MOSAIC with OPEN shutter Still integrating for typ. 30 sec. CCD window IF G2 Resulting image (scaled up for demo)

11. Integrate with ‘electronic’ exposure time T1 Integrate with ‘electronic’ exposure time T2 >> T1 G1 EF The guiding loop starts again with OPEN Shutter Integrate with IDENTICAL ‘electronic’ exposure time T2 >> T1 IF G2 Integrate with IDENTICAL ‘electronic’ exposure time T1

12. Readout pre-selected window CCD window G1 EF IF G2

13. Resulting Image (scaled up for demo) CCD window G1 EF IF G2

14. Resulting Image (scaled up for demo) CCD window G1 EF CCD window IF G2 Readout different pre-selected window

15. Resulting Image (scaled up for demo) CCD window Still integrating for typ. 30 sec. G1 EF Continuous LONG Time Integration on MOSAIC with OPEN shutter Still integrating for typ. 30 sec. CCD window IF G2 Resulting image (scaled up for demo)

16. Resulting Image (scaled up for demo) CCD window Still integrating for typ. 30 sec. G1 EF If 30 seconds are Over Pause guiding loop Readout pre-selected individ. windows of Image Analyzers sequentially Still integrating for typ. 30 sec. CCD window IF G2 Resulting image (scaled up for demo)

17. PAUSE G1 EF Continuous LONG Time Integration on MOSAIC with OPEN shutter IF G2 PAUSE

18. Read Window PAUSE G1 EF Continuous LONG Time Integration on MOSAIC with OPEN shutter IF G2 PAUSE

19. Resulting Image (scaled up) PAUSE G1 EF Continuous LONG Time Integration on MOSAIC with OPEN shutter IF G2 PAUSE

20. Resulting Image (scaled up) PAUSE G1 EF Continuous LONG Time Integration on MOSAIC with OPEN shutter IF G2 Read Window PAUSE

21. Resulting Image (scaled up) PAUSE G1 EF Continuous LONG Time Integration on MOSAIC with OPEN shutter IF G2 Resulting Image (scaled up) PAUSE

22. Resulting Image (scaled up) PAUSE G1 EF AND NOW : The Guiding Loop and the 30 sec. Integration on the Image Analyzers starts all over again with open shutter IF G2 Resulting Image (scaled up) PAUSE

23. Integrate with ‘electronic’ exposure time T1 Integrate with ‘electronic’ exposure time T2 >> T1 G1 EF This whole process of Guiding Loop & Image Analysis Loop continues until the exposure time on the MOSAIC is over Integrate with IDENTICAL ‘electronic’ exposure time T2 >> T1 IF G2 Integrate with IDENTICAL ‘electronic’ exposure time T1

24. Integrate with ‘electronic’ exposure time T1 Integrate with ‘electronic’ exposure time T2 >> T1 G1 EF CLOSE SHUTTER NOW Integrate with IDENTICAL ‘electronic’ exposure time T2 >> T1 IF G2 Integrate with IDENTICAL ‘electronic’ exposure time T1

25. SHUTTER CLOSED