LGS diagnostics Results (so far) Anna Moore, Hal Petrie LGS facility meeting 30 th Jan 2007

Set-up COUDE –Photodiode Average power Macro pulse profile –Near field image (pupil) –Far field image (spot) –Collimation Shear plate (Jenny’s) PRIME FOCUS –Photodiode Average power Macro pulse profile –Near field image (pupil) –Far field image (spot) –Wavefront map Shack-Hartmann sensor

Power PRIME COUDE ~400Hz ~4.7W

Power PRIME COUDE

Power PRIME COUDE 100kHz sampling max

Far field Image 660nm HeNe laser 7 th Jan 2007 PRIME FOCUS Fl=1000mm For ½ inch beam size FWHM of spot = 64  m 570 pixels (8.4  m/pix) 02:56

Near Field Image 660nm HeNe laser 7 th Jan 2007 PRIME FOCUS CCD is conjugated to pick-off wedge 570 pixels (~4in, need to check*) 02:58

Far field Image 589nm laser 7 th Jan 2007 PRIME FOCUS Fl=1000mm For ½ inch beam size FWHM of spot = 64  m 01:18

Far field Image 589nm laser 7 th Jan 2007 PRIME FOCUS Fl=1000mm For ½ inch beam size FWHM of spot = 64  m 01:25

Far field Image 589nm laser 7 th Jan 2007 PRIME FOCUS Fl=1000mm For ½ inch beam size FWHM of spot = 64  m 02:04

Far field Image 589nm laser 7 th Jan 2007 PRIME FOCUS Fl=1000mm For ½ inch beam size FWHM of spot = 64  m 02:24

Near Field Image 589nm laser 7 th Jan 2007 PRIME FOCUS CCD is conjugated to pick-off wedge 570 pixels (~4in, need to check*) 02:00