Sunspots Observation 2012 April
Year: 2012
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 1320 4 3 19 49 1 11 21 2 8 28 0 51 22 0
2 1410 4 5 30 80 2 20 40 3 10 40 40 51 34 0
3 1820 3 3 25 55 2 21 41 1 4 14 22 51 28 100 st. cirrus
4 1530 3 3 20 50 2 18 38 1 2 12 20 57 23 100 cirrus
5 1600 3 2 29 49 2 29 49 0 0 0 17 38 31 100 cirrus
6 1550 3 2 22 42 2 22 42 0 0 0 16 36 24 40 cirrus
7 ! 100 rAIn
8 1600 3 1 1 11 0 0 0 1 1 11 0 10 1 25 cirrus
9 1600 3 0 0 0 0 0 0 0 0 0 0 0 0 0
10 1920 3 1 2 12 0 0 0 1 2 12 0 4 3 85
11 1640 3 3 15 45 2 13 33 1 2 12 33 30 18 75
12 1930 3 3 21 51 2 20 40 1 1 11 40 33 23 85
13 1510 4 3 31 61 2 26 46 1 5 15 30 48 34 5
14 1520 4 5 27 77 3 22 52 2 5 25 23 47 32 10 cirrus
15 2030 3 4 24 64 2 13 33 2 11 31 0 80 28 85
16 1530 3 3 18 48 1 6 16 2 12 32 0 63 21 0
17 1730 3 6 40 100 3 18 48 3 22 52 15 63 46 75
18 1540 3 6 73 133 2 22 42 4 51 91 85 117 79 100 st. cirrus
19 1450 4 7 75 145 3 27 57 4 48 88 111 124 82 0
20 1730 3 7 79 149 2 18 38 5 61 111 79 128 86 70 cirrus
21 2000 3 6 73 133 2 22 42 4 51 91 78 118 79 100 cirrus
22 1520 3 6 92 152 2 24 44 4 68 108 87 114 98 20
23 1540 4 6 95 155 2 22 42 4 73 113 106 164 101 0
24 1810 3 5 70 120 3 36 66 2 34 54 72 76 75 10
25 1620 3 7 59 129 4 27 67 3 32 62 66 84 66 60 cirrus
26 1710 3 6 40 100 3 22 52 3 18 48 40 70 46 100 cirrus
27 ! 100 rain
28 1650 3 6 44 104 2 18 38 4 26 66 20 72 50 80 cirrus
29 1750 3 6 41 101 1 8 18 5 33 83 36 93 47 30 cirrus
30 1500 3 6 46 106 2 9 29 4 37 77 52 108 52 20
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Sunspots observation summary
Year: 2012
Month: April
OBSERVER: German Morales C.
Astronomia Sigma Octante
Monthly Mean R = 82.9
NR = 36.9 SR = 46.0 cR = 38.9
CV = 68.9 IS = 43.9
Q = 3.2 Cld = 52.5%
The Sun has been observed 28 days on 30 possible.
2 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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