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======VATT4k======
  STA0500A CCD
  4064×4064 pixels, 15 microns
  Gain = 1.9 e/DN
  The full well is ADC limited (65k DN), so this is ~120,000 electrons.
  Noise is ~3.9 electrons
  Sensor is ITL sn8301
  Updated 26-Jan-2018 MPL

  * A replacement STA0500A back illuminated 4K CCD, ITL serial number 8301, was installed March 2017, and updated 26 January 2018. It is similar to the September 2007 one, including {{ :vatt:vatt4k_qev.pdf |its QE}}.
  * pixel scale: 0.188 arcsec/pixel
  * wavelength range: 300 - 1000 nm, peak 96% at 450 nm
  * Preamplifiers added October 2008 inside the dewar. These give faster readout and lower noise.
  
====Photon Transfer Curve====
===Unbinned===
{{:vatt:vatt:ptc_13oct17.png|Unbinned Photon Transfer Curve}}

====Gain Curve====
===Unbinned===
{{:vatt:vatt:gain_13oct17.png|Gain Curve Unbinned}}

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