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LDSS-3 Specs

Low-Dispersion Survey Spectrograph (LDSS-3)

 

Telescope:


Focal ratio: f/11

Scale:

  • At Focal plane: 2.88 arcsec/mm
  • At Detector: 12.6 arcsec/mm (0.189 arcsec/pixel)


Field:

    • 8.3 arcmin diameter


Detector:

    • STAO500A: 4096 x 4096 (15 µm pixels);


Gain & Readout Noise:

 

 Gain
Setting
 Gain
e-/DN
 Read Noise
      (e-)
 Slow

  C1         C2

0.79       0.79

   C1         C2      

 4.03     4.07

 Fast

  C1         C2

0.69       0.69

   C1         C2

  13.7       13.2


Wavelength Range:

    • 3600-10000 Å


Aperture Wheel:

    • 8 positions (7 masks + 1 clear)


Filter Wheel:

    • 8 positions (g'r'i'z' + 1 clear)


Grism Wheel:

    • 3 grism positions + 1 clear + 2 Hartmann masks


Staff Contact:

    • John Mulchaey (jmulchaey at ociw.edu)
    • Ricardo Covarrubias (rcovarrubias at lco.cl)

 

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