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Bad Pixels

  • The detector is very cosmetically clean with few bad pixels. However, we still recommend that you obtain a set of dome flats to create a bad pixel mask for your run. In addition, there is a 'rim' of enhanced counts within 30-40 pixels of the outer edge of the detector. These extra counts do not subtract well, although a dark frame with the same exposure time as your science frame will help. In practice, the best approach is simply to trim off these outer pixels.
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