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Counts in spectrometer

  1. Apr 7, 2012 #1
    Well, I'm not a physician so, maybe my doubt is a little fool. Well, I'm mapping the light emitted by some lamps in some aquariums. For that, I'using a spectrometer named Ocean Optics USB4000 and a software named SpectraSuite. My intention is to discover how much is the total light getting into the aquariums and haw is it distributed in the aquarium. After taking the measurements, i will interpolate the data in the software Voxler from goldensoftware.
    Well, my problem is in the beginning of these processes: the data that the spectrometer take is given by counts in each kind of wave, like that:
    Wave Counts
    178,91 -30,32
    179,13 -30,32
    179,34 -30,32
    179,56 -47,11
    179,78 -52,23
    180,00 25,59
    180,21 -3,29
    180,43 4,70
    180,65 56,92
    180,86 -16,19
    181,08 4,13
    181,30 6,32
    181,51 10,22
    181,73 13,86
    181,95 18,10
    182,17 22,35
    182,38 22,55
    182,60 23,71
    182,82 24,45
    183,03 21,25
    183,25 23,55
    183,47 23,24
    183,68 25,75
    183,90 26,41
    184,12 26,91
    184,34 26,41
    184,55 29,11
    184,77 29,52
    184,99 30,15
    185,20 31,23
    185,42 31,96
    185,64 31,48
    (...........................)
    880,40 239,06
    880,57 228,80
    880,74 222,27
    880,91 213,25
    881,07 207,39
    881,24 199,64
    881,41 191,34
    881,58 185,91
    881,74 182,21
    881,91 176,63
    882,08 170,85
    882,25 165,77
    882,42 163,48
    882,58 161,57
    882,75 159,43
    882,92 158,30
    883,09 158,19
    883,25 156,41
    883,42 155,53
    883,59 154,07
    883,76 150,13
    883,92 149,86
    884,09 150,75
    884,26 147,37
    884,43 148,47
    884,60 147,10
    884,76 147,05
    884,93 147,07
    885,10 145,44
    885,27 145,20
    885,43 144,78
    885,60 145,16
    885,77 143,63
    885,93 142,32
    886,10 142,19
    886,27 143,42
    886,44 142,82
    886,60 142,32
    886,77 143,33
    886,94 143,85
    887,11 142,79
    887,27 146,86
    887,44 148,05
    887,61 148,53
    887,77 153,58
    887,94 157,17
    888,11 145,19
    888,28 145,60
    888,44 154,82
    888,61 164,44
    888,78 136,79
    888,94 203,56
    889,11 196,60
    889,28 169,77
    889,45 229,98
    889,61 215,23

    As you can see, there are even negative counts and I'm not getting really well what is the meaning of these "counts" and how can i convert it to any optic unites.
     
  2. jcsd
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