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MIKE calibrations

Here we provide some reference numbers for calibrations with MIKE

Flats: Internal Quartz lamps - binning 2x2 - speed fast 

Slit size Blue Red
  exptime counts exptime counts
 0.35" 10s 30000  3s  34000
 0.5"  9s  40000  3s  44000
 0.7"  6s  37000  2s  37000
 1.0"  5s  43000  1s  30000
 1.5"  3s  36000  1s  42000
 2.0"  2s  34000  1s  59000

 

Milky flats: same configuration as above but with the diffuser inserted 

Slit size Blue Red
  exptime counts exptime counts
 0.35"  32s 32000  15s  32000
 0.5"  25s 32000  12s  33000
 0.7"  17s 31000  8s  31000
 1.0"  15s 38000  6s  34000
 1.5"  10s 36000  4s  31000
 2.0"  7s 36000  3s  34000
 
 
Sky flats: to be done in daytime with louvres open at 50% and flat screen in. The following exposure times give between 35000 and 45000counts at peak (2x2 binning, speed fast). This results to ~600counts above background on the less efficient part of the blue side and ~1500counts for the red side. 

Slit size Blue Red
  exptime counts
at peak
exptime counts
at peak
 0.7"  100s 40000  30s  48000
 1.0"  90s 40000  20s  40000
 1.5"  45s 40000  10s  35000
 
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