Transcript diagnostics-summarysofar-013007.ppt

LGS diagnostics
Results (so far)
Anna Moore, Hal Petrie
LGS facility meeting
30th Jan 2007
Set-up
• COUDE
– Photodiode
• Average power
• Macro pulse profile
• PRIME FOCUS
– Photodiode
• Average power
• Macro pulse profile
– Near field image (pupil)
– Near field image (pupil)
– Far field image (spot)
– Far field image (spot)
– Collimation
– Wavefront map
• Shear plate (Jenny’s)
• Shack-Hartmann sensor
Power
PRIME
~400Hz
~4.7W
COUDE
Power
PRIME
COUDE
Power
PRIME
COUDE
100kHz sampling max
Far field Image
660nm HeNe laser
7th Jan 2007
PRIME FOCUS
Fl=1000mm
For ½ inch beam size
FWHM of spot = 64mm
02:56
570 pixels (8.4mm/pix)
Near Field Image
660nm HeNe laser
7th Jan 2007
PRIME FOCUS
CCD is conjugated to
pick-off wedge
02:58
570 pixels (~4in, need to check*)
Far field Image
589nm laser
7th Jan 2007
PRIME FOCUS
Fl=1000mm
For ½ inch beam size
FWHM of spot = 64mm
01:18
Far field Image
589nm laser
7th Jan 2007
PRIME FOCUS
Fl=1000mm
For ½ inch beam size
FWHM of spot = 64mm
01:25
Far field Image
589nm laser
7th Jan 2007
PRIME FOCUS
Fl=1000mm
For ½ inch beam size
FWHM of spot = 64mm
02:04
Far field Image
589nm laser
7th Jan 2007
PRIME FOCUS
Fl=1000mm
For ½ inch beam size
FWHM of spot = 64mm
02:24
Near Field Image
589nm laser
7th Jan 2007
PRIME FOCUS
CCD is conjugated to
pick-off wedge
02:00
570 pixels (~4in, need to check*)