Sunspots Observation for 2015 April

Sunspots Observation  2015  APRIL

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Year:  2015
Month: April

OBSERVER:      German Morales C.
               Astronomia Sigma Octante

Instr.:  SCT 
    Fl:  2000mm    Aperture:  200mm    Aperture stop used:  90mm

    Method:  Projection    Image diameter: 140mm


Day  UT  Q  g   s   R Ng  Ns  NR Sg  Ss  SR  cR   CV  IS M Cld Remarks     

  1                                                      ! 100 
  2 1540 3  1  14  24  1  14  24  0   0   0   0   19  15    20 
  3 1540 4  3  13  43  2  12  32  1   1  11   0   24  14     0 
  4 1600 4  4  29  69  2  13  33  2  16  36  17   76  33     0 
  5 1900 3  3  20  50  2   8  28  1  12  22  22   48  23    90 st. cirrus  
  6 1930 3  3  21  51  1   3  13  2  18  38  38   54  23    75 
  7 1610 3  2  34  54  1  15  25  1  19  29  54   44  36    30 
  8                                                      ! 100 rain        
  9 1730 3  2  19  39  1   5  15  1  14  24  39   26  21    70 
 10                                                      ! 100 
 11 1620 3  4  39  79  2  21  41  2  18  38  17  120  43    80 
 12 1610 3  5  36  86  2  23  43  3  13  43  12  118  41    30 
 13 1700 3  7  45 115  3  31  61  4  14  54  41  153  52    80 cirrus      
 14 1550 3  5  44  94  4  40  80  1   4  14  18  115  49    80 cirrus      
 15 1600 3  4  57  97  4  57  97  0   0   0  59  102  61   100 st. cirrus  
 16 1610 3  4  51  91  4  51  91  0   0   0  53  125  55    50 cirrus      
 17 2010 3  6  54 114  5  51 101  1   3  13  49  106  60    10 
 18                                                      ! 100 
 19 1720 3  5  42  92  3  33  63  2   9  29  42  105  47    50 
 20 1540 4  9  71 161  6  53 113  3  18  48  75  139  80     5 
 21 1750 3  8  49 129  4  27  67  4  22  62  64  104  57    80 cirrus      
 22 1630 4 10  60 160  7  38 108  3  22  52  82  101  70    15 
 23 1630 3  6  26  86  4  12  52  2  14  34  34   72  32    15 
 24 1540 3  5  20  70  3   6  36  2  14  34  34   71  25    30 cirrus      
 25 1540 3  4  26  66  2  10  30  2  16  36   0   52  30    10 
 26 1545 4  5  25  75  2  10  30  3  15  45  18   50  30     0 
 27 1630 3  3  15  45  1   5  15  2  10  30  15   42  18    50 
 28 1620 2  3  10  40  1   6  16  2   4  24  16   21  13   100 st. cirrus  
 29 1550 4  2   4  24  0   0   0  2   4  24   0   11   6     0 
 30 1540 3  2   9  29  0   0   0  2   9  29  15   14  11    15 


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Sunspots observation summary
Year:  2015
Month: April

OBSERVER:      German Morales C.
               Astronomia Sigma Octante

Monthly Mean     R =  76.3     

                NR =  46.7    SR =  29.6    cR =  31.3

                CV =  73.5    IS =  36.3

                 Q =   3.2   Cld =  49.5%

The Sun has been observed 26 days on 30 possible.
4 cloudy days impede observe the Sun

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Column Headings

UT:     UTC at middle of observation
Q:      Quality seeing
        1 Bad, 2 Poor, 3 Fair, 4 Good, 5 Excelent

R:      Wolf relative number for whole disc
         g: Total Groups,  s: Total Spots
NR:     Wolf Relative number North hemisphere
         Ng: North Groups,  Ns: North Spots
SR:     Wolf Relative number South hemisphere
         Sg: South Groups,  Ss: South Spots
cR:     Wolf Relative number Central
CV:     Classification Value after Malde for whole disc
IS:     Inter Sol index for whole disc

M:   !  Cloudy all day
     *  Cloudy at observation hours
     X  Impossible to make any kind of observation
Cld:    Percentage of cloudy sky

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Report generated and Sent by: SOdb-ASO-gmc software (c)1999-v:2013