fiera 1 & 2 operate synchronously one mosaic half each (0ns) one system different mosaic cameras...
TRANSCRIPT
Fiera 1 & 2 operate synchronously one mosaic half each (0ns)
ONE system
Different mosaic cameras
Multiple Controllers
One shutter
Fiera 3 operates four independentAuxiliary CCDs : First Software camera : Guiding G1 & G2 Second software camera : Image Analysis EF & IF
Guider 1
Guider 2
ImageAnalyser
EF
ImageAnalyser
IF
S C I E N C E
M O S A I C
16 K x 16 K
SHUTTER
CLOSED
ASSUMPTION :The System has been
set-upwith all individual
Star& window coordinates for G1 G2 EF IF
CCDs have been wiped
OPENING
SHUTTER
NOW
G1
G2
Continuous
LONG Time
Integration
on MOSAIC
with
OPEN shutter
Integrate with ‘electronic’ exposure time T1
Integrate with IDENTICAL ‘electronic’ exposure time
T1
EF
IF
Integrate with ‘electronic’ exposure time T2 >> T1
Integrate with IDENTICAL ‘electronic’exposure timeT2 >> T1
G1
G2
Readout
pre-selected window
CCDwindow
EF
IF
G1
G2
Resulting Image
(scaled up for demo)
CCDwindow
EF
IF
G1
G2
Resulting Image
(scaled up for demo)
CCDwindow
Readout different pre-selected window
CCD window
EF
IF
G1
G2
Continuous
LONG Time
Integration
on MOSAIC
with
OPEN shutter
Resulting Image
(scaled up for demo)
CCDwindow
Resulting image (scaled up for demo)
CCD window
EF
IF
Still integrating
for typ. 30 sec.
Still integrating
for typ. 30 sec.
G1
G2
The guiding loop
starts again
with OPEN Shutter
Integrate with ‘electronic’ exposure time T1
Integrate with IDENTICAL ‘electronic’ exposure time
T1
EF
IF
Integrate with ‘electronic’ exposure time T2 >> T1
Integrate with IDENTICAL ‘electronic’exposure timeT2 >> T1
G1
G2
Readout
pre-selected window
CCDwindow
EF
IF
G1
G2
Resulting Image
(scaled up for demo)
CCDwindow
EF
IF
G1
G2
Resulting Image
(scaled up for demo)
CCDwindow
Readout different pre-selected window
CCD window
EF
IF
G1
G2
Continuous
LONG Time
Integration
on MOSAIC
with
OPEN shutter
Resulting Image
(scaled up for demo)
CCDwindow
Resulting image (scaled up for demo)
CCD window
EF
IF
Still integrating
for typ. 30 sec.
Still integrating
for typ. 30 sec.
G1
G2
If 30 seconds are Over
Resulting Image
(scaled up for demo)
CCDwindow
Resulting image (scaled up for demo)
CCD window
EF
IF
Still integrating
for typ. 30 sec.
Still integrating
for typ. 30 sec.
Pause guiding loopReadout pre-selected
individ. windows of
Image Analyzers
sequentially
G1
G2
PAUSE
EF
IF
PAUSE
Continuous
LONG Time
Integration
on MOSAIC
with
OPEN shutter
G1
G2
PAUSE
EF
IF
PAUSE
Read Window
Continuous
LONG Time
Integration
on MOSAIC
with
OPEN shutter
G1
G2
PAUSE
EF
IF
PAUSE
Resulting Image (scaled up)
Continuous
LONG Time
Integration
on MOSAIC
with
OPEN shutter
G1
G2
PAUSE
EF
IF
PAUSE
Resulting Image (scaled up)
Continuous
LONG Time
Integration
on MOSAIC
with
OPEN shutter
Read Window
G1
G2
PAUSE
EF
IF
PAUSE
Resulting Image (scaled up)
Continuous
LONG Time
Integration
on MOSAIC
with
OPEN shutter
Resulting Image (scaled up)
G1
G2
PAUSE
EF
IF
PAUSE
Resulting Image (scaled up)
AND NOW :
The Guiding Loop
and the 30 sec. Integration
on the Image Analyzers
starts all over again
with open shutter
Resulting Image (scaled up)
G1
G2
Integrate with ‘electronic’ exposure time T1
Integrate with IDENTICAL ‘electronic’ exposure time
T1
EF
IF
Integrate with ‘electronic’ exposure time T2 >> T1
Integrate with IDENTICAL ‘electronic’exposure timeT2 >> T1
This whole process of
Guiding Loop &
Image Analysis Loop
continues until the exposure time on the
MOSAIC is over
G1
G2
Integrate with ‘electronic’ exposure time T1
Integrate with IDENTICAL ‘electronic’ exposure time
T1
EF
IF
Integrate with ‘electronic’ exposure time T2 >> T1
Integrate with IDENTICAL ‘electronic’exposure timeT2 >> T1
CLOSE
SHUTTER
NOW
SHUTTER
CLOSED