SAM: useful numbers

AOM: optics

• Focus depth w.r.t. flange surface: 150mm
• Spectral transmission curve of AOM: TBD

• OAP parameters:

  • Focal length 810mm
  • Off-axis distance 213.277mm
  • Diameter 175mm

• NGS WFS parameters:

  • LLA dist. to CCD 6.90 +- 0.1mm, lenslet size 192micron
  • CCD pixel 24micron or 0.346arcsec
  • Pupil on LLA 1.98mm diam. (magnification 1/2071).
  • Number of sub-apertures: 10 (80x80 pixels total)
  • 1 micron of Zernike tilt = 0.201 arcsec on sky or 0.58 WFS pixels

• Deformable mirror BIM-60

  • Number of electrodes: 60
  • Pupil diameter: 50mm, incidence angle: 12.5deg
  • Min. curvature radius (400V on all electrodes): 16.7m

• Tip-Tilt guiders

  • Patrol field: 100x100mm (5x5 arcmin)
  • Probe field of view: 3x3arcsec

AOM: mechanics and motions

• NGS WFS stage position: 80.3mm (HRCam focus)
• Instrument Selector stage position for HRCam: XXmm (??)
• Collimated space: diam. 153mm, thickness 75mm, beam diam. 70mm
• What else?

AOM - mass and dimensions

• Total mass at installation (3-Aug-2009) ~300kg
• Dimensions: ???
• Offset towards SOAR w.r.t. the ISB hole: 67.5mm
• Center-of-gravity position?

SOAR telescope

• Aperture diameter 4.10m
• Plate scale 0.330mm/arcsec or 3.025arcsec/mm
• M1 curvature radius at vertex: -13.50970m
• M1 conic constant: -1.002667
• M2 curvature radius: -2.03265m
• M1-M2 distance: 5.83922m
• M2-M3 distance: 4.98922m
• M3 to focus: 4250.0m
• Effective focal length: 68.175m (F/16.63)
• Focal surface radius: 0.9656m (convex outside)
• Central obscuration: 0.228 (diameter 936.5mm)

Laser

• Wavelength 355nm
• Nominal power 10W
• Nominal pulse frequency 10kHz, pulse length 34ns
• Laser head size: 813x127x86mm, mass: 14.5kg
• Typical power consumption: 400W laser, 700W chiller
• Power supply size: 427x364x76mm, mass: 8.4kg
• Chiller size: 533x440x264mm, mass 55kg

Electronics

Computers

HR camera

• Pixel size 10 micron or 15.23mas
• Format 658(H)x496(V) or 6.58x4.96mm or 10.0x7.55arcsec

SAMI

• Pixel size 15micron or 45.5mas
• 4Kx4K (3x3 arcmin on the sky)
• Filters: TBD

Last change: Nov-25-2009

Send comments to: Andrei Tokovinin